cmd.c

   1 /*
   2 Copyright (C) 1996-1997 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 */
  20 // cmd.c -- Quake script command processing module
  21
  22 #include "quakedef.h"
  23 #include "thread.h"
  24
  25 cmd_state_t *cmd_local;
  26 cmd_state_t *cmd_serverfromclient;
  27
  28 cmd_userdefined_t cmd_userdefined_all;
  29 cmd_userdefined_t cmd_userdefined_null;
  30
  31 typedef struct cmd_iter_s {
  32         cmd_state_t *cmd;
  33 }
  34 cmd_iter_t;
  35
  36 static cmd_iter_t *cmd_iter_all;
  37
  38 mempool_t *cbuf_mempool;
  39
  40 // we only run the +whatever commandline arguments once
  41 qbool host_stuffcmdsrun = false;
  42
  43 //=============================================================================
  44
  45 void Cbuf_Lock(cmd_buf_t *cbuf)
  46 {
  47         Thread_LockMutex(cbuf->lock);
  48 }
  49
  50 void Cbuf_Unlock(cmd_buf_t *cbuf)
  51 {
  52         Thread_UnlockMutex(cbuf->lock);
  53 }
  54
  55
  56 /*
  57 ============
  58 Cmd_Wait_f
  59
  60 Causes execution of the remainder of the command buffer to be delayed until
  61 next frame.  This allows commands like:
  62 bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
  63 ============
  64 */
  65 static void Cmd_Wait_f (cmd_state_t *cmd)
  66 {
  67         cmd->cbuf->wait = true;
  68 }
  69
  70 /*
  71 ============
  72 Cmd_Defer_f
  73
  74 Cause a command to be executed after a delay.
  75 ============
  76 */
  77 static void Cbuf_ParseText(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text, qbool allowpending);
  78 static void Cbuf_LinkString(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text, qbool leavepending, unsigned int cmdsize);
  79 static void Cmd_Defer_f (cmd_state_t *cmd)
  80 {
  81         cmd_input_t *current;
  82         cmd_buf_t *cbuf = cmd->cbuf;
  83         unsigned int cmdsize;
  84
  85         if(Cmd_Argc(cmd) == 1)
  86         {
  87                 if(List_Is_Empty(&cbuf->deferred))
  88                         Con_Printf("No commands are pending.\n");
  89                 else
  90                 {
  91                         List_For_Each_Entry(current, &cbuf->deferred, cmd_input_t, list)
  92                                 Con_Printf("-> In %9.2f: %s\n", current->delay, current->text);
  93                 }
  94         }
  95         else if(Cmd_Argc(cmd) == 2 && !strcasecmp("clear", Cmd_Argv(cmd, 1)))
  96         {
  97                 while(!List_Is_Empty(&cbuf->deferred))
  98                 {
  99                         cbuf->size -= List_Entry(cbuf->deferred.next, cmd_input_t, list)->length;
 100                         List_Move_Tail(cbuf->deferred.next, &cbuf->free);
 101                 }
 102         }
 103         else if(Cmd_Argc(cmd) == 3 && (cmdsize = strlen(Cmd_Argv(cmd, 2))) )
 104         {
 105                 Cbuf_Lock(cbuf);
 106
 107                 Cbuf_LinkString(cmd, &cbuf->deferred, NULL, Cmd_Argv(cmd, 2), false, cmdsize);
 108                 List_Entry(cbuf->deferred.prev, cmd_input_t, list)->delay = atof(Cmd_Argv(cmd, 1));
 109
 110                 Cbuf_Unlock(cbuf);
 111         }
 112         else
 113         {
 114                 Con_Printf("usage: defer <seconds> <command>\n"
 115                            "       defer clear\n");
 116                 return;
 117         }
 118 }
 119
 120 /*
 121 =============================================================================
 122
 123                                                 COMMAND BUFFER
 124
 125  * The Quake command-line is super basic. It can be entered in the console
 126  * or in config files. A semicolon is used to terminate a command and chain
 127  * them together. Otherwise, a newline delineates command input.
 128  *
 129  * In most engines, the Quake command-line is a simple linear text buffer that
 130  * is parsed when it executes. In Darkplaces, we use a linked list of command
 131  * input and parse the input on the spot.
 132  *
 133  * This was done because Darkplaces allows multiple command interpreters on the
 134  * same thread. Previously, each interpreter maintained its own buffer and this
 135  * caused problems related to execution order, and maintaining a single simple
 136  * buffer for all interpreters makes it non-trivial to keep track of which
 137  * command should execute on which interpreter.
 138
 139 =============================================================================
 140 */
 141
 142 /*
 143 ============
 144 Cbuf_NodeGet
 145
 146 Returns an existing buffer node for appending or reuse, or allocates a new one
 147 ============
 148 */
 149 static cmd_input_t *Cbuf_NodeGet(cmd_buf_t *cbuf, cmd_input_t *existing)
 150 {
 151         cmd_input_t *node;
 152         if(existing && existing->pending)
 153                 node = existing;
 154         else if(!List_Is_Empty(&cbuf->free))
 155         {
 156                 node = List_Entry(cbuf->free.next, cmd_input_t, list);
 157                 node->length = node->pending = 0;
 158         }
 159         else
 160         {
 161                 node = (cmd_input_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_input_t));
 162                 node->list.prev = node->list.next = &node->list;
 163                 node->size = node->length = node->pending = 0;
 164         }
 165         return node;
 166 }
 167
 168 /*
 169 ============
 170 Cbuf_LinkString
 171
 172 Copies a command string into a buffer node
 173 ============
 174 */
 175 static void Cbuf_LinkString(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text, qbool leavepending, unsigned int cmdsize)
 176 {
 177         cmd_buf_t *cbuf = cmd->cbuf;
 178         cmd_input_t *node = Cbuf_NodeGet(cbuf, existing);
 179         unsigned int offset = node->length; // > 0 if(pending)
 180
 181         // node will match existing if its text was pending continuation
 182         if(node != existing)
 183         {
 184                 node->source = cmd;
 185                 List_Move_Tail(&node->list, head);
 186         }
 187
 188         node->length += cmdsize;
 189         if(node->size < node->length)
 190         {
 191                 node->text = (char *)Mem_Realloc(cbuf_mempool, node->text, node->length + 1);
 192                 node->size = node->length;
 193         }
 194         cbuf->size += cmdsize;
 195
 196         strlcpy(&node->text[offset], text, cmdsize + 1); // always sets the last char to \0
 197         //Con_Printf("^5Cbuf_LinkString(): %s `^7%s^5`\n", node->pending ? "append" : "new", &node->text[offset]);
 198         node->pending = leavepending;
 199 }
 200
 201 /*
 202 ============
 203 Cbuf_ParseText
 204
 205 Parses text to isolate command strings for linking into the buffer
 206 separators: \n \r or unquoted and uncommented ';'
 207 ============
 208 */
 209 static void Cbuf_ParseText(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text, qbool allowpending)
 210 {
 211         unsigned int cmdsize = 0, start = 0, pos;
 212         qbool quotes = false, comment = false;
 213
 214         for (pos = 0; text[pos]; ++pos)
 215         {
 216                 switch(text[pos])
 217                 {
 218                         case ';':
 219                                 if (comment || quotes)
 220                                         break;
 221                         case '\r':
 222                         case '\n':
 223                                 comment = false;
 224                                 quotes = false; // matches div0-stable
 225                                 if (cmdsize)
 226                                 {
 227                                         Cbuf_LinkString(cmd, head, existing, &text[start], false, cmdsize);
 228                                         cmdsize = 0;
 229                                 }
 230                                 else if (existing && existing->pending) // all I got was this lousy \n
 231                                         existing->pending = false;
 232                                 continue; // don't increment cmdsize
 233
 234                         case '/':
 235                                 if (!quotes && text[pos + 1] == '/' && (pos == 0 || ISWHITESPACE(text[pos - 1])))
 236                                         comment = true;
 237                                 break;
 238                         case '"':
 239                                 if (!comment && (pos == 0 || text[pos - 1] != '\\'))
 240                                         quotes = !quotes;
 241                                 break;
 242                 }
 243
 244                 if (!comment)
 245                 {
 246                         if (!cmdsize)
 247                                 start = pos;
 248                         ++cmdsize;
 249                 }
 250         }
 251
 252         if (cmdsize) // the line didn't end yet but we do have a string
 253                 Cbuf_LinkString(cmd, head, existing, &text[start], allowpending, cmdsize);
 254 }
 255
 256 /*
 257 ============
 258 Cbuf_AddText
 259
 260 Adds command text at the end of the buffer
 261 ============
 262 */
 263 void Cbuf_AddText (cmd_state_t *cmd, const char *text)
 264 {
 265         size_t l = strlen(text);
 266         cmd_buf_t *cbuf = cmd->cbuf;
 267         llist_t llist = {&llist, &llist};
 268
 269         if (cbuf->size + l > cbuf->maxsize)
 270         {
 271                 Con_Printf(CON_WARN "Cbuf_AddText: input too large, %zuKB ought to be enough for anybody.\n", cbuf->maxsize / 1024);
 272                 return;
 273         }
 274
 275         Cbuf_Lock(cbuf);
 276
 277         // If the string terminates but the (last) line doesn't, the node will be left in the pending state (to be continued).
 278         Cbuf_ParseText(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(cbuf->start.prev, cmd_input_t, list)), text, true);
 279         List_Splice_Tail(&llist, &cbuf->start);
 280
 281         Cbuf_Unlock(cbuf);
 282 }
 283
 284 /*
 285 ============
 286 Cbuf_InsertText
 287
 288 Adds command text immediately after the current command
 289 ============
 290 */
 291 void Cbuf_InsertText (cmd_state_t *cmd, const char *text)
 292 {
 293         cmd_buf_t *cbuf = cmd->cbuf;
 294         llist_t llist = {&llist, &llist};
 295         size_t l = strlen(text);
 296
 297         if (cbuf->size + l > cbuf->maxsize)
 298         {
 299                 Con_Printf(CON_WARN "Cbuf_InsertText: input too large, %zuKB ought to be enough for anybody.\n", cbuf->maxsize / 1024);
 300                 return;
 301         }
 302
 303         Cbuf_Lock(cbuf);
 304
 305         // bones_was_here assertion: when prepending to the buffer it never makes sense to leave node(s) in the `pending` state,
 306         // it would have been impossible to append to such text later in the old raw text buffer,
 307         // and allowing it causes bugs when .cfg files lack \n at EOF (see: https://gitlab.com/xonotic/darkplaces/-/issues/378).
 308         Cbuf_ParseText(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(cbuf->start.next, cmd_input_t, list)), text, false);
 309         List_Splice(&llist, &cbuf->start);
 310
 311         Cbuf_Unlock(cbuf);
 312 }
 313
 314 /*
 315 ============
 316 Cbuf_Execute_Deferred --blub
 317 ============
 318 */
 319 static void Cbuf_Execute_Deferred (cmd_buf_t *cbuf)
 320 {
 321         cmd_input_t *current, *n;
 322         vec_t eat;
 323
 324         if (host.realtime - cbuf->deferred_oldtime < 0 || host.realtime - cbuf->deferred_oldtime > 1800)
 325                 cbuf->deferred_oldtime = host.realtime;
 326         eat = host.realtime - cbuf->deferred_oldtime;
 327         if (eat < 1.0/128.0)
 328                 return;
 329         cbuf->deferred_oldtime = host.realtime;
 330
 331         List_For_Each_Entry_Safe(current, n, &cbuf->deferred, cmd_input_t, list)
 332         {
 333                 current->delay -= eat;
 334                 if(current->delay <= 0)
 335                 {
 336                         Cbuf_AddText(current->source, current->text); // parse deferred string and append its cmdstring(s)
 337                         List_Entry(cbuf->start.prev, cmd_input_t, list)->pending = false; // faster than div0-stable's Cbuf_AddText(";\n");
 338                         List_Move_Tail(&current->list, &cbuf->free); // make deferred string memory available for reuse
 339                         cbuf->size -= current->length;
 340                 }
 341         }
 342 }
 343
 344 /*
 345 ============
 346 Cbuf_Execute
 347 ============
 348 */
 349 extern qbool prvm_runawaycheck;
 350 static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias );
 351 void Cbuf_Execute (cmd_buf_t *cbuf)
 352 {
 353         cmd_input_t *current;
 354         char preprocessed[MAX_INPUTLINE];
 355         char *firstchar;
 356         unsigned int i = 0;
 357
 358         // LadyHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
 359         cbuf->tokenizebufferpos = 0;
 360
 361         while (!List_Is_Empty(&cbuf->start))
 362         {
 363                 /*
 364                  * Delete the text from the command buffer and move remaining
 365                  * commands down. This is necessary because commands (exec, alias)
 366                  * can insert data at the beginning of the text buffer
 367                  */
 368                 current = List_Entry(cbuf->start.next, cmd_input_t, list);
 369
 370                 /*
 371                  * Assume we're rolling with the current command-line and
 372                  * always set this false because alias expansion or cbuf insertion
 373                  * without a newline may set this true, and cause weirdness.
 374                  */
 375                 current->pending = false;
 376
 377                 cbuf->size -= current->length;
 378
 379                 firstchar = current->text;
 380                 while(*firstchar && ISWHITESPACE(*firstchar))
 381                         ++firstchar;
 382                 if((strncmp(firstchar, "alias", 5)   || !ISWHITESPACE(firstchar[5])) &&
 383                    (strncmp(firstchar, "bind", 4)    || !ISWHITESPACE(firstchar[4])) &&
 384                    (strncmp(firstchar, "in_bind", 7) || !ISWHITESPACE(firstchar[7])))
 385                 {
 386                         if(Cmd_PreprocessString(current->source, current->text, preprocessed, sizeof(preprocessed), NULL ))
 387                                 Cmd_ExecuteString(current->source, preprocessed, src_local, false);
 388                 }
 389                 else
 390                 {
 391                         Cmd_ExecuteString (current->source, current->text, src_local, false);
 392                 }
 393
 394                 // Recycle memory so using WASD doesn't cause a malloc and free
 395                 List_Move_Tail(&current->list, &cbuf->free);
 396
 397                 current = NULL;
 398
 399                 if (cbuf->wait)
 400                 {
 401                         /*
 402                          * Skip out while text still remains in
 403                          * buffer, leaving it for next frame
 404                          */
 405                         cbuf->wait = false;
 406                         break;
 407                 }
 408
 409                 if (++i == 1000000 && prvm_runawaycheck)
 410                 {
 411                         Con_Printf(CON_WARN "Cbuf_Execute: runaway loop counter hit limit of %d commands, clearing command buffers!\n", i);
 412                         Cbuf_Clear(cbuf);
 413                 }
 414         }
 415 }
 416
 417 /*
 418 ===================
 419 Cbuf_Frame_Input
 420
 421 Add them exactly as if they had been typed at the console
 422 ===================
 423 */
 424 static void Cbuf_Frame_Input(void)
 425 {
 426         char *line;
 427
 428         // bones_was_here: prepending allows a loop such as `alias foo "bar; wait; foo"; foo`
 429         // to be broken with an alias or unalias command
 430         while ((line = Sys_ConsoleInput()))
 431                 Cbuf_InsertText(cmd_local, line);
 432 }
 433
 434 void Cbuf_Frame(cmd_buf_t *cbuf)
 435 {
 436         // check for commands typed to the host
 437         Cbuf_Frame_Input();
 438
 439 //      R_TimeReport("preconsole");
 440
 441         // execute commands queued with the defer command
 442         Cbuf_Execute_Deferred(cbuf);
 443         if (cbuf->size)
 444         {
 445                 SV_LockThreadMutex();
 446                 Cbuf_Execute(cbuf);
 447                 SV_UnlockThreadMutex();
 448         }
 449
 450 //      R_TimeReport("console");
 451 }
 452
 453 void Cbuf_Clear(cmd_buf_t *cbuf)
 454 {
 455         while (!List_Is_Empty(&cbuf->start))
 456                 List_Move_Tail(cbuf->start.next, &cbuf->free);
 457         while (!List_Is_Empty(&cbuf->deferred))
 458                 List_Move_Tail(cbuf->deferred.next, &cbuf->free);
 459         cbuf->size = 0;
 460 }
 461
 462 /*
 463 ==============================================================================
 464
 465                                                 SCRIPT COMMANDS
 466
 467 ==============================================================================
 468 */
 469
 470 /*
 471 ===============
 472 Cmd_StuffCmds_f
 473
 474 Adds command line parameters as script statements
 475 Commands lead with a +, and continue until a - or another +
 476 quake +prog jctest.qp +cmd amlev1
 477 quake -nosound +cmd amlev1
 478 ===============
 479 */
 480 static void Cmd_StuffCmds_f (cmd_state_t *cmd)
 481 {
 482         int             i, j, l;
 483         // this is for all commandline options combined (and is bounds checked)
 484         char    build[MAX_INPUTLINE];
 485
 486         if (Cmd_Argc (cmd) != 1)
 487         {
 488                 Con_Print("stuffcmds : execute command line parameters\n");
 489                 return;
 490         }
 491
 492         // no reason to run the commandline arguments twice
 493         if (host_stuffcmdsrun)
 494                 return;
 495
 496         host_stuffcmdsrun = true;
 497         build[0] = 0;
 498         l = 0;
 499         for (i = 0;i < sys.argc;i++)
 500         {
 501                 if (sys.argv[i] && sys.argv[i][0] == '+' && (sys.argv[i][1] < '0' || sys.argv[i][1] > '9') && l + strlen(sys.argv[i]) - 1 <= sizeof(build) - 1)
 502                 {
 503                         j = 1;
 504                         while (sys.argv[i][j])
 505                                 build[l++] = sys.argv[i][j++];
 506                         i++;
 507                         for (;i < sys.argc;i++)
 508                         {
 509                                 if (!sys.argv[i])
 510                                         continue;
 511                                 if ((sys.argv[i][0] == '+' || sys.argv[i][0] == '-') && (sys.argv[i][1] < '0' || sys.argv[i][1] > '9'))
 512                                         break;
 513                                 if (l + strlen(sys.argv[i]) + 4 > sizeof(build) - 1)
 514                                         break;
 515                                 build[l++] = ' ';
 516                                 if (strchr(sys.argv[i], ' '))
 517                                         build[l++] = '\"';
 518                                 for (j = 0;sys.argv[i][j];j++)
 519                                         build[l++] = sys.argv[i][j];
 520                                 if (strchr(sys.argv[i], ' '))
 521                                         build[l++] = '\"';
 522                         }
 523                         build[l++] = '\n';
 524                         i--;
 525                 }
 526         }
 527         // now terminate the combined string and prepend it to the command buffer
 528         // we already reserved space for the terminator
 529         build[l++] = 0;
 530         Cbuf_InsertText (cmd, build);
 531 }
 532
 533 static void Cmd_Exec(cmd_state_t *cmd, const char *filename)
 534 {
 535         char *f;
 536         size_t filenameLen = strlen(filename);
 537         qbool isdefaultcfg =
 538                 !strcmp(filename, "default.cfg") ||
 539                 (filenameLen >= 12 && !strcmp(filename + filenameLen - 12, "/default.cfg"));
 540
 541         if (!strcmp(filename, "config.cfg"))
 542         {
 543                 filename = CONFIGFILENAME;
 544                 if (Sys_CheckParm("-noconfig"))
 545                         return; // don't execute config.cfg
 546         }
 547
 548         f = (char *)FS_LoadFile (filename, tempmempool, false, NULL);
 549         if (!f)
 550         {
 551                 Con_Printf(CON_WARN "couldn't exec %s\n",filename);
 552                 return;
 553         }
 554         Con_Printf("execing %s\n",filename);
 555
 556         // if executing default.cfg for the first time, lock the cvar defaults
 557         // it may seem backwards to insert this text BEFORE the default.cfg
 558         // but Cbuf_InsertText inserts before, so this actually ends up after it.
 559         if (isdefaultcfg)
 560                 Cbuf_InsertText(cmd, "\ncvar_lockdefaults\n");
 561
 562         Cbuf_InsertText (cmd, f);
 563         Mem_Free(f);
 564
 565         if (isdefaultcfg)
 566         {
 567                 // special defaults for specific games go here, these execute before default.cfg
 568                 // Nehahra pushable crates malfunction in some levels if this is on
 569                 // Nehahra NPC AI is confused by blowupfallenzombies
 570                 switch(gamemode)
 571                 {
 572                 case GAME_NORMAL:
 573                         Cbuf_InsertText(cmd, "\n"
 574 "sv_gameplayfix_blowupfallenzombies 0\n"
 575 "sv_gameplayfix_findradiusdistancetobox 0\n"
 576 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 577 "sv_gameplayfix_slidemoveprojectiles 0\n"
 578 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 579 "sv_gameplayfix_setmodelrealbox 0\n"
 580 "sv_gameplayfix_droptofloorstartsolid 0\n"
 581 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 582 "sv_gameplayfix_noairborncorpse 0\n"
 583 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 584 "sv_gameplayfix_easierwaterjump 0\n"
 585 "sv_gameplayfix_delayprojectiles 0\n"
 586 "sv_gameplayfix_multiplethinksperframe 0\n"
 587 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 588 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 589 "sv_gameplayfix_swiminbmodels 0\n"
 590 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 591 "sys_ticrate 0.01388889\n"
 592 "r_shadow_gloss 1\n"
 593 "r_shadow_bumpscale_basetexture 0\n"
 594 "csqc_polygons_defaultmaterial_nocullface 0\n"
 595                                 );
 596                         break;
 597                 case GAME_NEHAHRA:
 598                         Cbuf_InsertText(cmd, "\n"
 599 "sv_gameplayfix_blowupfallenzombies 0\n"
 600 "sv_gameplayfix_findradiusdistancetobox 0\n"
 601 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 602 "sv_gameplayfix_slidemoveprojectiles 0\n"
 603 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 604 "sv_gameplayfix_setmodelrealbox 0\n"
 605 "sv_gameplayfix_droptofloorstartsolid 0\n"
 606 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 607 "sv_gameplayfix_noairborncorpse 0\n"
 608 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 609 "sv_gameplayfix_easierwaterjump 0\n"
 610 "sv_gameplayfix_delayprojectiles 0\n"
 611 "sv_gameplayfix_multiplethinksperframe 0\n"
 612 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 613 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 614 "sv_gameplayfix_swiminbmodels 0\n"
 615 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 616 "sys_ticrate 0.01388889\n"
 617 "r_shadow_gloss 1\n"
 618 "r_shadow_bumpscale_basetexture 0\n"
 619 "csqc_polygons_defaultmaterial_nocullface 0\n"
 620                                 );
 621                         break;
 622                 // hipnotic mission pack has issues in their 'friendly monster' ai, which seem to attempt to attack themselves for some reason when findradius() returns non-solid entities.
 623                 // hipnotic mission pack has issues with bobbing water entities 'jittering' between different heights on alternate frames at the default 0.0138889 ticrate, 0.02 avoids this issue
 624                 // hipnotic mission pack has issues in their proximity mine sticking code, which causes them to bounce off.
 625                 case GAME_HIPNOTIC:
 626                 case GAME_QUOTH:
 627                         Cbuf_InsertText(cmd, "\n"
 628 "sv_gameplayfix_blowupfallenzombies 0\n"
 629 "sv_gameplayfix_findradiusdistancetobox 0\n"
 630 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 631 "sv_gameplayfix_slidemoveprojectiles 0\n"
 632 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 633 "sv_gameplayfix_setmodelrealbox 0\n"
 634 "sv_gameplayfix_droptofloorstartsolid 0\n"
 635 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 636 "sv_gameplayfix_noairborncorpse 0\n"
 637 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 638 "sv_gameplayfix_easierwaterjump 0\n"
 639 "sv_gameplayfix_delayprojectiles 0\n"
 640 "sv_gameplayfix_multiplethinksperframe 0\n"
 641 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 642 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 643 "sv_gameplayfix_swiminbmodels 0\n"
 644 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 645 "sys_ticrate 0.02\n"
 646 "r_shadow_gloss 1\n"
 647 "r_shadow_bumpscale_basetexture 0\n"
 648 "csqc_polygons_defaultmaterial_nocullface 0\n"
 649                                 );
 650                         break;
 651                 // rogue mission pack has a guardian boss that does not wake up if findradius returns one of the entities around its spawn area
 652                 case GAME_ROGUE:
 653                         Cbuf_InsertText(cmd, "\n"
 654 "sv_gameplayfix_blowupfallenzombies 0\n"
 655 "sv_gameplayfix_findradiusdistancetobox 0\n"
 656 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 657 "sv_gameplayfix_slidemoveprojectiles 0\n"
 658 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 659 "sv_gameplayfix_setmodelrealbox 0\n"
 660 "sv_gameplayfix_droptofloorstartsolid 0\n"
 661 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 662 "sv_gameplayfix_noairborncorpse 0\n"
 663 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 664 "sv_gameplayfix_easierwaterjump 0\n"
 665 "sv_gameplayfix_delayprojectiles 0\n"
 666 "sv_gameplayfix_multiplethinksperframe 0\n"
 667 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 668 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 669 "sv_gameplayfix_swiminbmodels 0\n"
 670 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 671 "sys_ticrate 0.01388889\n"
 672 "r_shadow_gloss 1\n"
 673 "r_shadow_bumpscale_basetexture 0\n"
 674 "csqc_polygons_defaultmaterial_nocullface 0\n"
 675                                 );
 676                         break;
 677                 case GAME_TENEBRAE:
 678                         Cbuf_InsertText(cmd, "\n"
 679 "sv_gameplayfix_blowupfallenzombies 0\n"
 680 "sv_gameplayfix_findradiusdistancetobox 0\n"
 681 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 682 "sv_gameplayfix_slidemoveprojectiles 0\n"
 683 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 684 "sv_gameplayfix_setmodelrealbox 0\n"
 685 "sv_gameplayfix_droptofloorstartsolid 0\n"
 686 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 687 "sv_gameplayfix_noairborncorpse 0\n"
 688 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 689 "sv_gameplayfix_easierwaterjump 0\n"
 690 "sv_gameplayfix_delayprojectiles 0\n"
 691 "sv_gameplayfix_multiplethinksperframe 0\n"
 692 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 693 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 694 "sv_gameplayfix_swiminbmodels 0\n"
 695 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 696 "sys_ticrate 0.01388889\n"
 697 "r_shadow_gloss 2\n"
 698 "r_shadow_bumpscale_basetexture 4\n"
 699 "csqc_polygons_defaultmaterial_nocullface 0\n"
 700                                 );
 701                         break;
 702                 case GAME_NEXUIZ:
 703                         Cbuf_InsertText(cmd, "\n"
 704 "sv_gameplayfix_blowupfallenzombies 1\n"
 705 "sv_gameplayfix_findradiusdistancetobox 1\n"
 706 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 707 "sv_gameplayfix_slidemoveprojectiles 1\n"
 708 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 709 "sv_gameplayfix_setmodelrealbox 1\n"
 710 "sv_gameplayfix_droptofloorstartsolid 1\n"
 711 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 712 "sv_gameplayfix_noairborncorpse 1\n"
 713 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 714 "sv_gameplayfix_easierwaterjump 1\n"
 715 "sv_gameplayfix_delayprojectiles 1\n"
 716 "sv_gameplayfix_multiplethinksperframe 1\n"
 717 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 718 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 719 "sv_gameplayfix_swiminbmodels 1\n"
 720 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 721 "sys_ticrate 0.01388889\n"
 722 "sv_gameplayfix_q2airaccelerate 1\n"
 723 "sv_gameplayfix_stepmultipletimes 1\n"
 724 "csqc_polygons_defaultmaterial_nocullface 1\n"
 725 "con_chatsound_team_mask 13\n"
 726                                 );
 727                         break;
 728                 case GAME_XONOTIC:
 729                 case GAME_VORETOURNAMENT:
 730                         // compatibility for versions prior to 2020-05-25, this can be overridden in newer versions to get the default behavior and be consistent with FTEQW engine
 731                         Cbuf_InsertText(cmd, "\n"
 732 "csqc_polygons_defaultmaterial_nocullface 1\n"
 733 "con_chatsound_team_mask 13\n"
 734 "sv_qcstats 1\n"
 735 "mod_q1bsp_zero_hullsize_cutoff 8.03125\n"
 736                                 );
 737                         break;
 738                 // Steel Storm: Burning Retribution csqc misinterprets CSQC_InputEvent if type is a value other than 0 or 1
 739                 case GAME_STEELSTORM:
 740                         Cbuf_InsertText(cmd, "\n"
 741 "sv_gameplayfix_blowupfallenzombies 1\n"
 742 "sv_gameplayfix_findradiusdistancetobox 1\n"
 743 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 744 "sv_gameplayfix_slidemoveprojectiles 1\n"
 745 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 746 "sv_gameplayfix_setmodelrealbox 1\n"
 747 "sv_gameplayfix_droptofloorstartsolid 1\n"
 748 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 749 "sv_gameplayfix_noairborncorpse 1\n"
 750 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 751 "sv_gameplayfix_easierwaterjump 1\n"
 752 "sv_gameplayfix_delayprojectiles 1\n"
 753 "sv_gameplayfix_multiplethinksperframe 1\n"
 754 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 755 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 756 "sv_gameplayfix_swiminbmodels 1\n"
 757 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 758 "sys_ticrate 0.01388889\n"
 759 "cl_csqc_generatemousemoveevents 0\n"
 760 "csqc_polygons_defaultmaterial_nocullface 1\n"
 761                                 );
 762                         break;
 763                 default:
 764                         Cbuf_InsertText(cmd, "\n"
 765 "sv_gameplayfix_blowupfallenzombies 1\n"
 766 "sv_gameplayfix_findradiusdistancetobox 1\n"
 767 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 768 "sv_gameplayfix_slidemoveprojectiles 1\n"
 769 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 770 "sv_gameplayfix_setmodelrealbox 1\n"
 771 "sv_gameplayfix_droptofloorstartsolid 1\n"
 772 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 773 "sv_gameplayfix_noairborncorpse 1\n"
 774 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 775 "sv_gameplayfix_easierwaterjump 1\n"
 776 "sv_gameplayfix_delayprojectiles 1\n"
 777 "sv_gameplayfix_multiplethinksperframe 1\n"
 778 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 779 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 780 "sv_gameplayfix_swiminbmodels 1\n"
 781 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 782 "sys_ticrate 0.01388889\n"
 783 "csqc_polygons_defaultmaterial_nocullface 0\n"
 784                                 );
 785                         break;
 786                 }
 787         }
 788 }
 789
 790 /*
 791 ===============
 792 Cmd_Exec_f
 793 ===============
 794 */
 795 static void Cmd_Exec_f (cmd_state_t *cmd)
 796 {
 797         fssearch_t *s;
 798         int i;
 799
 800         if (Cmd_Argc(cmd) != 2)
 801         {
 802                 Con_Print("exec <filename> : execute a script file\n");
 803                 return;
 804         }
 805
 806         s = FS_Search(Cmd_Argv(cmd, 1), true, true, NULL);
 807         if(!s || !s->numfilenames)
 808         {
 809                 Con_Printf(CON_WARN "couldn't exec %s\n",Cmd_Argv(cmd, 1));
 810                 return;
 811         }
 812
 813         for(i = 0; i < s->numfilenames; ++i)
 814                 Cmd_Exec(cmd, s->filenames[i]);
 815
 816         FS_FreeSearch(s);
 817 }
 818
 819
 820 /*
 821 ===============
 822 Cmd_Echo_f
 823
 824 Just prints the rest of the line to the console
 825 ===============
 826 */
 827 static void Cmd_Echo_f (cmd_state_t *cmd)
 828 {
 829         int             i;
 830
 831         for (i=1 ; i<Cmd_Argc(cmd) ; i++)
 832                 Con_Printf("%s ",Cmd_Argv(cmd, i));
 833         Con_Print("\n");
 834 }
 835
 836 // DRESK - 5/14/06
 837 // Support Doom3-style Toggle Console Command
 838 /*
 839 ===============
 840 Cmd_Toggle_f
 841
 842 Toggles a specified console variable amongst the values specified (default is 0 and 1)
 843 ===============
 844 */
 845 static void Cmd_Toggle_f(cmd_state_t *cmd)
 846 {
 847         // Acquire Number of Arguments
 848         int nNumArgs = Cmd_Argc(cmd);
 849
 850         if(nNumArgs == 1)
 851                 // No Arguments Specified; Print Usage
 852                 Con_Print("Toggle Console Variable - Usage\n  toggle <variable> - toggles between 0 and 1\n  toggle <variable> <value> - toggles between 0 and <value>\n  toggle <variable> [string 1] [string 2]...[string n] - cycles through all strings\n");
 853         else
 854         { // Correct Arguments Specified
 855                 // Acquire Potential CVar
 856                 cvar_t* cvCVar = Cvar_FindVar(cmd->cvars, Cmd_Argv(cmd, 1), cmd->cvars_flagsmask);
 857
 858                 if(cvCVar != NULL)
 859                 { // Valid CVar
 860                         if(nNumArgs == 2)
 861                         { // Default Usage
 862                                 if(cvCVar->integer)
 863                                         Cvar_SetValueQuick(cvCVar, 0);
 864                                 else
 865                                         Cvar_SetValueQuick(cvCVar, 1);
 866                         }
 867                         else
 868                         if(nNumArgs == 3)
 869                         { // 0 and Specified Usage
 870                                 if(cvCVar->integer == atoi(Cmd_Argv(cmd, 2) ) )
 871                                         // CVar is Specified Value; // Reset to 0
 872                                         Cvar_SetValueQuick(cvCVar, 0);
 873                                 else
 874                                 if(cvCVar->integer == 0)
 875                                         // CVar is 0; Specify Value
 876                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 877                                 else
 878                                         // CVar does not match; Reset to 0
 879                                         Cvar_SetValueQuick(cvCVar, 0);
 880                         }
 881                         else
 882                         { // Variable Values Specified
 883                                 int nCnt;
 884                                 int bFound = 0;
 885
 886                                 for(nCnt = 2; nCnt < nNumArgs; nCnt++)
 887                                 { // Cycle through Values
 888                                         if( strcmp(cvCVar->string, Cmd_Argv(cmd, nCnt) ) == 0)
 889                                         { // Current Value Located; Increment to Next
 890                                                 if( (nCnt + 1) == nNumArgs)
 891                                                         // Max Value Reached; Reset
 892                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 893                                                 else
 894                                                         // Next Value
 895                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, nCnt + 1) );
 896
 897                                                 // End Loop
 898                                                 nCnt = nNumArgs;
 899                                                 // Assign Found
 900                                                 bFound = 1;
 901                                         }
 902                                 }
 903                                 if(!bFound)
 904                                         // Value not Found; Reset to Original
 905                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 906                         }
 907
 908                 }
 909                 else
 910                 { // Invalid CVar
 911                         Con_Printf(CON_WARN "ERROR : CVar '%s' not found\n", Cmd_Argv(cmd, 1) );
 912                 }
 913         }
 914 }
 915
 916 /*
 917 ===============
 918 Cmd_Alias_f
 919
 920 Creates a new command that executes a command string (possibly ; seperated)
 921 ===============
 922 */
 923 static void Cmd_Alias_f (cmd_state_t *cmd)
 924 {
 925         cmd_alias_t     *a;
 926         char            line[MAX_INPUTLINE];
 927         int                     i, c;
 928         const char              *s;
 929         size_t          alloclen;
 930
 931         if (Cmd_Argc(cmd) == 1)
 932         {
 933                 Con_Print("Current alias commands:\n");
 934                 for (a = cmd->userdefined->alias ; a ; a=a->next)
 935                         Con_Printf("%s : %s", a->name, a->value);
 936                 return;
 937         }
 938
 939         s = Cmd_Argv(cmd, 1);
 940         if (strlen(s) >= MAX_ALIAS_NAME)
 941         {
 942                 Con_Print(CON_WARN "Alias name is too long\n");
 943                 return;
 944         }
 945
 946         // if the alias already exists, reuse it
 947         for (a = cmd->userdefined->alias ; a ; a=a->next)
 948         {
 949                 if (!strcmp(s, a->name))
 950                 {
 951                         Z_Free (a->value);
 952                         break;
 953                 }
 954         }
 955
 956         if (!a)
 957         {
 958                 cmd_alias_t *prev, *current;
 959
 960                 a = (cmd_alias_t *)Z_Malloc (sizeof(cmd_alias_t));
 961                 strlcpy (a->name, s, sizeof (a->name));
 962                 // insert it at the right alphanumeric position
 963                 for( prev = NULL, current = cmd->userdefined->alias ; current && strcmp( current->name, a->name ) < 0 ; prev = current, current = current->next )
 964                         ;
 965                 if( prev ) {
 966                         prev->next = a;
 967                 } else {
 968                         cmd->userdefined->alias = a;
 969                 }
 970                 a->next = current;
 971         }
 972
 973
 974 // copy the rest of the command line
 975         line[0] = 0;            // start out with a null string
 976         c = Cmd_Argc(cmd);
 977         for (i=2 ; i < c ; i++)
 978         {
 979                 if (i != 2)
 980                         strlcat (line, " ", sizeof (line));
 981                 strlcat (line, Cmd_Argv(cmd, i), sizeof (line));
 982         }
 983         strlcat (line, "\n", sizeof (line));
 984
 985         alloclen = strlen (line) + 1;
 986         if(alloclen >= 2)
 987                 line[alloclen - 2] = '\n'; // to make sure a newline is appended even if too long
 988         a->value = (char *)Z_Malloc (alloclen);
 989         memcpy (a->value, line, alloclen);
 990 }
 991
 992 /*
 993 ===============
 994 Cmd_UnAlias_f
 995
 996 Remove existing aliases.
 997 ===============
 998 */
 999 static void Cmd_UnAlias_f (cmd_state_t *cmd)
1000 {
1001         cmd_alias_t     *a, *p;
1002         int i;
1003         const char *s;
1004
1005         if(Cmd_Argc(cmd) == 1)
1006         {
1007                 Con_Print("unalias: Usage: unalias alias1 [alias2 ...]\n");
1008                 return;
1009         }
1010
1011         for(i = 1; i < Cmd_Argc(cmd); ++i)
1012         {
1013                 s = Cmd_Argv(cmd, i);
1014                 p = NULL;
1015                 for(a = cmd->userdefined->alias; a; p = a, a = a->next)
1016                 {
1017                         if(!strcmp(s, a->name))
1018                         {
1019                                 if (a->initstate) // we can not remove init aliases
1020                                         continue;
1021                                 if(a == cmd->userdefined->alias)
1022                                         cmd->userdefined->alias = a->next;
1023                                 if(p)
1024                                         p->next = a->next;
1025                                 Z_Free(a->value);
1026                                 Z_Free(a);
1027                                 break;
1028                         }
1029                 }
1030                 if(!a)
1031                         Con_Printf("unalias: %s alias not found\n", s);
1032         }
1033 }
1034
1035 /*
1036 =============================================================================
1037
1038                                         COMMAND EXECUTION
1039
1040 =============================================================================
1041 */
1042
1043 static const char *Cmd_GetDirectCvarValue(cmd_state_t *cmd, const char *varname, cmd_alias_t *alias, qbool *is_multiple)
1044 {
1045         cvar_t *cvar;
1046         long argno;
1047         char *endptr;
1048         static char vabuf[1024]; // cmd_mutex
1049
1050         if(is_multiple)
1051                 *is_multiple = false;
1052
1053         if(!varname || !*varname)
1054                 return NULL;
1055
1056         if(alias)
1057         {
1058                 if(!strcmp(varname, "*"))
1059                 {
1060                         if(is_multiple)
1061                                 *is_multiple = true;
1062                         return Cmd_Args(cmd);
1063                 }
1064                 else if(!strcmp(varname, "#"))
1065                 {
1066                         return va(vabuf, sizeof(vabuf), "%d", Cmd_Argc(cmd));
1067                 }
1068                 else if(varname[strlen(varname) - 1] == '-')
1069                 {
1070                         argno = strtol(varname, &endptr, 10);
1071                         if(endptr == varname + strlen(varname) - 1)
1072                         {
1073                                 // whole string is a number, apart from the -
1074                                 const char *p = Cmd_Args(cmd);
1075                                 for(; argno > 1; --argno)
1076                                         if(!COM_ParseToken_Console(&p))
1077                                                 break;
1078                                 if(p)
1079                                 {
1080                                         if(is_multiple)
1081                                                 *is_multiple = true;
1082
1083                                         // kill pre-argument whitespace
1084                                         for (;*p && ISWHITESPACE(*p);p++)
1085                                                 ;
1086
1087                                         return p;
1088                                 }
1089                         }
1090                 }
1091                 else
1092                 {
1093                         argno = strtol(varname, &endptr, 10);
1094                         if(*endptr == 0)
1095                         {
1096                                 // whole string is a number
1097                                 // NOTE: we already made sure we don't have an empty cvar name!
1098                                 if(argno >= 0 && argno < Cmd_Argc(cmd))
1099                                         return Cmd_Argv(cmd, argno);
1100                         }
1101                 }
1102         }
1103
1104         if((cvar = Cvar_FindVar(cmd->cvars, varname, cmd->cvars_flagsmask)) && !(cvar->flags & CF_PRIVATE))
1105                 return cvar->string;
1106
1107         return NULL;
1108 }
1109
1110 qbool Cmd_QuoteString(char *out, size_t outlen, const char *in, const char *quoteset, qbool putquotes)
1111 {
1112         qbool quote_quot = !!strchr(quoteset, '"');
1113         qbool quote_backslash = !!strchr(quoteset, '\\');
1114         qbool quote_dollar = !!strchr(quoteset, '$');
1115
1116         if(putquotes)
1117         {
1118                 if(outlen <= 2)
1119                 {
1120                         *out++ = 0;
1121                         return false;
1122                 }
1123                 *out++ = '"'; --outlen;
1124                 --outlen;
1125         }
1126
1127         while(*in)
1128         {
1129                 if(*in == '"' && quote_quot)
1130                 {
1131                         if(outlen <= 2)
1132                                 goto fail;
1133                         *out++ = '\\'; --outlen;
1134                         *out++ = '"'; --outlen;
1135                 }
1136                 else if(*in == '\\' && quote_backslash)
1137                 {
1138                         if(outlen <= 2)
1139                                 goto fail;
1140                         *out++ = '\\'; --outlen;
1141                         *out++ = '\\'; --outlen;
1142                 }
1143                 else if(*in == '$' && quote_dollar)
1144                 {
1145                         if(outlen <= 2)
1146                                 goto fail;
1147                         *out++ = '$'; --outlen;
1148                         *out++ = '$'; --outlen;
1149                 }
1150                 else
1151                 {
1152                         if(outlen <= 1)
1153                                 goto fail;
1154                         *out++ = *in; --outlen;
1155                 }
1156                 ++in;
1157         }
1158         if(putquotes)
1159                 *out++ = '"';
1160         *out++ = 0;
1161         return true;
1162 fail:
1163         if(putquotes)
1164                 *out++ = '"';
1165         *out++ = 0;
1166         return false;
1167 }
1168
1169 static const char *Cmd_GetCvarValue(cmd_state_t *cmd, const char *var, size_t varlen, cmd_alias_t *alias)
1170 {
1171         static char varname[MAX_INPUTLINE]; // cmd_mutex
1172         static char varval[MAX_INPUTLINE]; // cmd_mutex
1173         const char *varstr = NULL;
1174         char *varfunc;
1175         qbool required = false;
1176         qbool optional = false;
1177         static char asis[] = "asis"; // just to suppress const char warnings
1178
1179         if(varlen >= MAX_INPUTLINE)
1180                 varlen = MAX_INPUTLINE - 1;
1181         memcpy(varname, var, varlen);
1182         varname[varlen] = 0;
1183         varfunc = strchr(varname, ' ');
1184
1185         if(varfunc)
1186         {
1187                 *varfunc = 0;
1188                 ++varfunc;
1189         }
1190
1191         if(*var == 0)
1192         {
1193                 // empty cvar name?
1194                 if(alias)
1195                         Con_Printf(CON_WARN "Warning: Could not expand $ in alias %s\n", alias->name);
1196                 else
1197                         Con_Printf(CON_WARN "Warning: Could not expand $\n");
1198                 return "$";
1199         }
1200
1201         if(varfunc)
1202         {
1203                 char *p;
1204                 // ? means optional
1205                 while((p = strchr(varfunc, '?')))
1206                 {
1207                         optional = true;
1208                         memmove(p, p+1, strlen(p)); // with final NUL
1209                 }
1210                 // ! means required
1211                 while((p = strchr(varfunc, '!')))
1212                 {
1213                         required = true;
1214                         memmove(p, p+1, strlen(p)); // with final NUL
1215                 }
1216                 // kill spaces
1217                 while((p = strchr(varfunc, ' ')))
1218                 {
1219                         memmove(p, p+1, strlen(p)); // with final NUL
1220                 }
1221                 // if no function is left, NULL it
1222                 if(!*varfunc)
1223                         varfunc = NULL;
1224         }
1225
1226         if(varname[0] == '$')
1227                 varstr = Cmd_GetDirectCvarValue(cmd, Cmd_GetDirectCvarValue(cmd, varname + 1, alias, NULL), alias, NULL);
1228         else
1229         {
1230                 qbool is_multiple = false;
1231                 // Exception: $* and $n- don't use the quoted form by default
1232                 varstr = Cmd_GetDirectCvarValue(cmd, varname, alias, &is_multiple);
1233                 if(is_multiple)
1234                         if(!varfunc)
1235                                 varfunc = asis;
1236         }
1237
1238         if(!varstr)
1239         {
1240                 if(required)
1241                 {
1242                         if(alias)
1243                                 Con_Printf(CON_ERROR "Error: Could not expand $%s in alias %s\n", varname, alias->name);
1244                         else
1245                                 Con_Printf(CON_ERROR "Error: Could not expand $%s\n", varname);
1246                         return NULL;
1247                 }
1248                 else if(optional)
1249                 {
1250                         return "";
1251                 }
1252                 else
1253                 {
1254                         if(alias)
1255                                 Con_Printf(CON_WARN "Warning: Could not expand $%s in alias %s\n", varname, alias->name);
1256                         else
1257                                 Con_Printf(CON_WARN "Warning: Could not expand $%s\n", varname);
1258                         dpsnprintf(varval, sizeof(varval), "$%s", varname);
1259                         return varval;
1260                 }
1261         }
1262
1263         if(!varfunc || !strcmp(varfunc, "q")) // note: quoted form is default, use "asis" to override!
1264         {
1265                 // quote it so it can be used inside double quotes
1266                 // we just need to replace " by \", and of course, double backslashes
1267                 Cmd_QuoteString(varval, sizeof(varval), varstr, "\"\\", false);
1268                 return varval;
1269         }
1270         else if(!strcmp(varfunc, "asis"))
1271         {
1272                 return varstr;
1273         }
1274         else
1275                 Con_Printf("Unknown variable function %s\n", varfunc);
1276
1277         return varstr;
1278 }
1279
1280 /*
1281 Cmd_PreprocessString
1282
1283 Preprocesses strings and replaces $*, $param#, $cvar accordingly. Also strips comments.
1284 */
1285 static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias ) {
1286         const char *in;
1287         size_t eat, varlen;
1288         unsigned outlen;
1289         const char *val;
1290
1291         // don't crash if there's no room in the outtext buffer
1292         if( maxoutlen == 0 ) {
1293                 return false;
1294         }
1295         maxoutlen--; // because of \0
1296
1297         in = intext;
1298         outlen = 0;
1299
1300         while( *in && outlen < maxoutlen ) {
1301                 if( *in == '$' ) {
1302                         // this is some kind of expansion, see what comes after the $
1303                         in++;
1304
1305                         // The console does the following preprocessing:
1306                         //
1307                         // - $$ is transformed to a single dollar sign.
1308                         // - $var or ${var} are expanded to the contents of the named cvar,
1309                         //   with quotation marks and backslashes quoted so it can safely
1310                         //   be used inside quotation marks (and it should always be used
1311                         //   that way)
1312                         // - ${var asis} inserts the cvar value as is, without doing this
1313                         //   quoting
1314                         // - ${var ?} silently expands to the empty string if
1315                         //   $var does not exist
1316                         // - ${var !} fails expansion and executes nothing if
1317                         //   $var does not exist
1318                         // - prefix the cvar name with a dollar sign to do indirection;
1319                         //   for example, if $x has the value timelimit, ${$x} will return
1320                         //   the value of $timelimit
1321                         // - when expanding an alias, the special variable name $* refers
1322                         //   to all alias parameters, and a number refers to that numbered
1323                         //   alias parameter, where the name of the alias is $0, the first
1324                         //   parameter is $1 and so on; as a special case, $* inserts all
1325                         //   parameters, without extra quoting, so one can use $* to just
1326                         //   pass all parameters around. All parameters starting from $n
1327                         //   can be referred to as $n- (so $* is equivalent to $1-).
1328                         // - ${* q} and ${n- q} force quoting anyway
1329                         //
1330                         // Note: when expanding an alias, cvar expansion is done in the SAME step
1331                         // as alias expansion so that alias parameters or cvar values containing
1332                         // dollar signs have no unwanted bad side effects. However, this needs to
1333                         // be accounted for when writing complex aliases. For example,
1334                         //   alias foo "set x NEW; echo $x"
1335                         // actually expands to
1336                         //   "set x NEW; echo OLD"
1337                         // and will print OLD! To work around this, use a second alias:
1338                         //   alias foo "set x NEW; foo2"
1339                         //   alias foo2 "echo $x"
1340                         //
1341                         // Also note: lines starting with alias are exempt from cvar expansion.
1342                         // If you want cvar expansion, write "alias" instead:
1343                         //
1344                         //   set x 1
1345                         //   alias foo "echo $x"
1346                         //   "alias" bar "echo $x"
1347                         //   set x 2
1348                         //
1349                         // foo will print 2, because the variable $x will be expanded when the alias
1350                         // gets expanded. bar will print 1, because the variable $x was expanded
1351                         // at definition time. foo can be equivalently defined as
1352                         //
1353                         //   "alias" foo "echo $$x"
1354                         //
1355                         // because at definition time, $$ will get replaced to a single $.
1356
1357                         if( *in == '$' ) {
1358                                 val = "$";
1359                                 eat = 1;
1360                         } else if(*in == '{') {
1361                                 varlen = strcspn(in + 1, "}");
1362                                 if(in[varlen + 1] == '}')
1363                                 {
1364                                         val = Cmd_GetCvarValue(cmd, in + 1, varlen, alias);
1365                                         if(!val)
1366                                                 return false;
1367                                         eat = varlen + 2;
1368                                 }
1369                                 else
1370                                 {
1371                                         // ran out of data?
1372                                         val = NULL;
1373                                         eat = varlen + 1;
1374                                 }
1375                         } else {
1376                                 varlen = strspn(in, "#*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-");
1377                                 val = Cmd_GetCvarValue(cmd, in, varlen, alias);
1378                                 if(!val)
1379                                         return false;
1380                                 eat = varlen;
1381                         }
1382                         if(val)
1383                         {
1384                                 // insert the cvar value
1385                                 while(*val && outlen < maxoutlen)
1386                                         outtext[outlen++] = *val++;
1387                                 in += eat;
1388                         }
1389                         else
1390                         {
1391                                 // copy the unexpanded text
1392                                 outtext[outlen++] = '$';
1393                                 while(eat && outlen < maxoutlen)
1394                                 {
1395                                         outtext[outlen++] = *in++;
1396                                         --eat;
1397                                 }
1398                         }
1399                 }
1400                 else
1401                         outtext[outlen++] = *in++;
1402         }
1403         outtext[outlen] = 0;
1404         return true;
1405 }
1406
1407 /*
1408 ============
1409 Cmd_ExecuteAlias
1410
1411 Called for aliases and fills in the alias into the cbuffer
1412 ============
1413 */
1414 static void Cmd_ExecuteAlias (cmd_state_t *cmd, cmd_alias_t *alias)
1415 {
1416         static char buffer[ MAX_INPUTLINE ]; // cmd_mutex
1417         static char buffer2[ MAX_INPUTLINE ]; // cmd_mutex
1418         qbool ret = Cmd_PreprocessString( cmd, alias->value, buffer, sizeof(buffer) - 2, alias );
1419         if(!ret)
1420                 return;
1421         // insert at start of command buffer, so that aliases execute in order
1422         // (fixes bug introduced by Black on 20050705)
1423
1424         // Note: Cbuf_PreprocessString will be called on this string AGAIN! So we
1425         // have to make sure that no second variable expansion takes place, otherwise
1426         // alias parameters containing dollar signs can have bad effects.
1427         Cmd_QuoteString(buffer2, sizeof(buffer2), buffer, "$", false);
1428         Cbuf_InsertText(cmd, buffer2);
1429 }
1430
1431 /*
1432 ========
1433 Cmd_List
1434
1435         CmdList Added by EvilTypeGuy eviltypeguy@qeradiant.com
1436         Thanks to Matthias "Maddes" Buecher, http://www.inside3d.com/qip/
1437
1438 ========
1439 */
1440 static void Cmd_List_f (cmd_state_t *cmd)
1441 {
1442         cmd_function_t *func;
1443         const char *partial;
1444         size_t len;
1445         int count;
1446         qbool ispattern;
1447
1448         if (Cmd_Argc(cmd) > 1)
1449         {
1450                 partial = Cmd_Argv(cmd, 1);
1451                 len = strlen(partial);
1452                 ispattern = (strchr(partial, '*') || strchr(partial, '?'));
1453         }
1454         else
1455         {
1456                 partial = NULL;
1457                 len = 0;
1458                 ispattern = false;
1459         }
1460
1461         count = 0;
1462         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1463         {
1464                 if (partial && (ispattern ? !matchpattern_with_separator(func->name, partial, false, "", false) : strncmp(partial, func->name, len)))
1465                         continue;
1466                 Con_Printf("%s : %s\n", func->name, func->description);
1467                 count++;
1468         }
1469         for (func = cmd->engine_functions; func; func = func->next)
1470         {
1471                 if (partial && (ispattern ? !matchpattern_with_separator(func->name, partial, false, "", false) : strncmp(partial, func->name, len)))
1472                         continue;
1473                 Con_Printf("%s : %s\n", func->name, func->description);
1474                 count++;
1475         }
1476
1477         if (len)
1478         {
1479                 if(ispattern)
1480                         Con_Printf("%i Command%s matching \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
1481                 else
1482                         Con_Printf("%i Command%s beginning with \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
1483         }
1484         else
1485                 Con_Printf("%i Command%s\n\n", count, (count > 1) ? "s" : "");
1486 }
1487
1488 static void Cmd_Apropos_f(cmd_state_t *cmd)
1489 {
1490         cmd_function_t *func;
1491         cvar_t *cvar;
1492         cmd_alias_t *alias;
1493         const char *partial;
1494         int count;
1495         qbool ispattern;
1496         char vabuf[1024];
1497
1498         if (Cmd_Argc(cmd) > 1)
1499                 partial = Cmd_Args(cmd);
1500         else
1501         {
1502                 Con_Printf("usage: %s <string>\n",Cmd_Argv(cmd, 0));
1503                 return;
1504         }
1505
1506         ispattern = partial && (strchr(partial, '*') || strchr(partial, '?'));
1507         if(!ispattern)
1508                 partial = va(vabuf, sizeof(vabuf), "*%s*", partial);
1509
1510         count = 0;
1511         for (cvar = cmd->cvars->vars; cvar; cvar = cvar->next)
1512         {
1513                 if (matchpattern_with_separator(cvar->name, partial, true, "", false) ||
1514                     matchpattern_with_separator(cvar->description, partial, true, "", false))
1515                 {
1516                         Con_Printf ("cvar ");
1517                         Cvar_PrintHelp(cvar, cvar->name, true);
1518                         count++;
1519                 }
1520                 for (char **cvar_alias = cvar->aliases; cvar_alias && *cvar_alias; cvar_alias++)
1521                 {
1522                         if (matchpattern_with_separator(*cvar_alias, partial, true, "", false))
1523                         {
1524                                 Con_Printf ("cvar ");
1525                                 Cvar_PrintHelp(cvar, *cvar_alias, true);
1526                                 count++;
1527                         }
1528                 }
1529         }
1530         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1531         {
1532                 if (!matchpattern_with_separator(func->name, partial, true, "", false))
1533                         if (!matchpattern_with_separator(func->description, partial, true, "", false))
1534                                 continue;
1535                 Con_Printf("command ^2%s^7: %s\n", func->name, func->description);
1536                 count++;
1537         }
1538         for (func = cmd->engine_functions; func; func = func->next)
1539         {
1540                 if (!matchpattern_with_separator(func->name, partial, true, "", false))
1541                 if (!matchpattern_with_separator(func->description, partial, true, "", false))
1542                         continue;
1543                 Con_Printf("command ^2%s^7: %s\n", func->name, func->description);
1544                 count++;
1545         }
1546         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
1547         {
1548                 // procede here a bit differently as an alias value always got a final \n
1549                 if (!matchpattern_with_separator(alias->name, partial, true, "", false))
1550                 if (!matchpattern_with_separator(alias->value, partial, true, "\n", false)) // when \n is as separator wildcards don't match it
1551                         continue;
1552                 Con_Printf("alias ^5%s^7: %s", alias->name, alias->value); // do not print an extra \n
1553                 count++;
1554         }
1555         Con_Printf("%i result%s\n\n", count, (count > 1) ? "s" : "");
1556 }
1557
1558 static cmd_state_t *Cmd_AddInterpreter(cmd_buf_t *cbuf, cvar_state_t *cvars, unsigned cvars_flagsmask, unsigned cmds_flagsmask, cmd_userdefined_t *userdefined)
1559 {
1560         cmd_state_t *cmd = (cmd_state_t *)Mem_Alloc(tempmempool, sizeof(cmd_state_t));
1561
1562         cmd->mempool = Mem_AllocPool("commands", 0, NULL);
1563         // space for commands and script files
1564         cmd->cbuf = cbuf;
1565         cmd->null_string = "";
1566
1567         cmd->cvars = cvars;
1568         cmd->cvars_flagsmask = cvars_flagsmask;
1569         cmd->cmd_flagsmask = cmds_flagsmask;
1570         cmd->userdefined = userdefined;
1571
1572         return cmd;
1573 }
1574
1575 /*
1576 ============
1577 Cmd_Init
1578 ============
1579 */
1580 void Cmd_Init(void)
1581 {
1582         cmd_buf_t *cbuf;
1583         unsigned cvars_flagsmask, cmds_flagsmask;
1584
1585         cbuf_mempool = Mem_AllocPool("Command buffer", 0, NULL);
1586         cbuf = (cmd_buf_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_buf_t));
1587         cbuf->maxsize = CMDBUFSIZE;
1588         cbuf->lock = Thread_CreateMutex();
1589         cbuf->wait = false;
1590         host.cbuf = cbuf;
1591
1592         cbuf->start.prev = cbuf->start.next = &(cbuf->start);
1593         cbuf->deferred.prev = cbuf->deferred.next = &(cbuf->deferred);
1594         cbuf->free.prev = cbuf->free.next = &(cbuf->free);
1595
1596         // FIXME: Get rid of cmd_iter_all eventually. This is just a hack to reduce the amount of work to make the interpreters dynamic.
1597         cmd_iter_all = (cmd_iter_t *)Mem_Alloc(tempmempool, sizeof(cmd_iter_t) * 3);
1598
1599         // local console
1600         if (cls.state == ca_dedicated)
1601         {
1602                 cvars_flagsmask = CF_SERVER;
1603                 cmds_flagsmask = CF_SERVER | CF_SERVER_FROM_CLIENT;
1604         }
1605         else
1606         {
1607                 cvars_flagsmask = CF_CLIENT | CF_SERVER;
1608                 cmds_flagsmask = CF_CLIENT | CF_SERVER | CF_CLIENT_FROM_SERVER | CF_SERVER_FROM_CLIENT;
1609         }
1610         cmd_iter_all[0].cmd = cmd_local = Cmd_AddInterpreter(cbuf, &cvars_all, cvars_flagsmask, cmds_flagsmask, &cmd_userdefined_all);
1611         cmd_local->Handle = Cmd_CL_Callback;
1612
1613         // server commands received from clients have no reason to access cvars, cvar expansion seems perilous.
1614         cmd_iter_all[1].cmd = cmd_serverfromclient = Cmd_AddInterpreter(cbuf, &cvars_null, 0, CF_SERVER_FROM_CLIENT | CF_USERINFO, &cmd_userdefined_null);
1615         cmd_serverfromclient->Handle = Cmd_SV_Callback;
1616
1617         cmd_iter_all[2].cmd = NULL;
1618 //
1619 // register our commands
1620 //
1621         // client-only commands
1622         Cmd_AddCommand(CF_SHARED, "wait", Cmd_Wait_f, "make script execution wait for next rendered frame");
1623
1624         // maintenance commands used for upkeep of cvars and saved configs
1625         Cmd_AddCommand(CF_SHARED, "stuffcmds", Cmd_StuffCmds_f, "execute commandline parameters (must be present in quake.rc script)");
1626         Cmd_AddCommand(CF_SHARED, "cvar_lockdefaults", Cvar_LockDefaults_f, "stores the current values of all cvars into their default values, only used once during startup after parsing default.cfg");
1627         Cmd_AddCommand(CF_SHARED, "cvar_resettodefaults_all", Cvar_ResetToDefaults_All_f, "sets all cvars to their locked default values");
1628         Cmd_AddCommand(CF_SHARED, "cvar_resettodefaults_nosaveonly", Cvar_ResetToDefaults_NoSaveOnly_f, "sets all non-saved cvars to their locked default values (variables that will not be saved to config.cfg)");
1629         Cmd_AddCommand(CF_SHARED, "cvar_resettodefaults_saveonly", Cvar_ResetToDefaults_SaveOnly_f, "sets all saved cvars to their locked default values (variables that will be saved to config.cfg)");
1630
1631         // general console commands used in multiple environments
1632         Cmd_AddCommand(CF_SHARED, "exec", Cmd_Exec_f, "execute a script file");
1633         Cmd_AddCommand(CF_SHARED, "echo",Cmd_Echo_f, "print a message to the console (useful in scripts)");
1634         Cmd_AddCommand(CF_SHARED, "alias",Cmd_Alias_f, "create a script function (parameters are passed in as $X (being X a number), $* for all parameters, $X- for all parameters starting from $X). Without arguments show the list of all alias");
1635         Cmd_AddCommand(CF_SHARED, "unalias",Cmd_UnAlias_f, "remove an alias");
1636         Cmd_AddCommand(CF_SHARED, "set", Cvar_Set_f, "create or change the value of a console variable");
1637         Cmd_AddCommand(CF_SHARED, "seta", Cvar_SetA_f, "create or change the value of a console variable that will be saved to config.cfg");
1638         Cmd_AddCommand(CF_SHARED, "unset", Cvar_Del_f, "delete a cvar (does not work for static ones like _cl_name, or read-only ones)");
1639
1640 #ifdef FILLALLCVARSWITHRUBBISH
1641         Cmd_AddCommand(CF_SHARED, "fillallcvarswithrubbish", Cvar_FillAll_f, "fill all cvars with a specified number of characters to provoke buffer overruns");
1642 #endif /* FILLALLCVARSWITHRUBBISH */
1643
1644         // 2000-01-09 CmdList, CvarList commands By Matthias "Maddes" Buecher
1645         // Added/Modified by EvilTypeGuy eviltypeguy@qeradiant.com
1646         Cmd_AddCommand(CF_SHARED, "cmdlist", Cmd_List_f, "lists all console commands beginning with the specified prefix or matching the specified wildcard pattern");
1647         Cmd_AddCommand(CF_SHARED, "cvarlist", Cvar_List_f, "lists all console variables beginning with the specified prefix or matching the specified wildcard pattern");
1648         Cmd_AddCommand(CF_SHARED, "apropos", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");
1649         Cmd_AddCommand(CF_SHARED, "find", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");
1650
1651         Cmd_AddCommand(CF_SHARED, "defer", Cmd_Defer_f, "execute a command in the future");
1652
1653         // DRESK - 5/14/06
1654         // Support Doom3-style Toggle Command
1655         Cmd_AddCommand(CF_SHARED | CF_CLIENT_FROM_SERVER, "toggle", Cmd_Toggle_f, "toggles a console variable's values (use for more info)");
1656 }
1657
1658 /*
1659 ============
1660 Cmd_Shutdown
1661 ============
1662 */
1663 void Cmd_Shutdown(void)
1664 {
1665         cmd_iter_t *cmd_iter;
1666         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
1667         {
1668                 cmd_state_t *cmd = cmd_iter->cmd;
1669
1670                 if (cmd->cbuf->lock)
1671                 {
1672                         // we usually have this locked when we get here from Host_Quit_f
1673                         Cbuf_Unlock(cmd->cbuf);
1674                 }
1675
1676                 Mem_FreePool(&cmd->mempool);
1677         }
1678 }
1679
1680 /*
1681 ============
1682 Cmd_TokenizeString
1683
1684 Parses the given string into command line tokens.
1685 Takes a null terminated string.  Does not need to be /n terminated.
1686 ============
1687 */
1688 // AK: This function should only be called from ExecuteString because the current design is a bit of an hack
1689 static void Cmd_TokenizeString (cmd_state_t *cmd, const char *text)
1690 {
1691         int l;
1692
1693         cmd->argc = 0;
1694         cmd->args = NULL;
1695         cmd->cmdline = NULL;
1696
1697         while (1)
1698         {
1699                 // skip whitespace up to a /n
1700                 while (*text && ISWHITESPACE(*text) && *text != '\r' && *text != '\n')
1701                         text++;
1702
1703                 // line endings:
1704                 // UNIX: \n
1705                 // Mac: \r
1706                 // Windows: \r\n
1707                 if (*text == '\n' || *text == '\r')
1708                 {
1709                         // a newline separates commands in the buffer
1710                         if (*text == '\r' && text[1] == '\n')
1711                                 text++;
1712                         text++;
1713                         break;
1714                 }
1715
1716                 if (!*text)
1717                         return;
1718
1719                 if(!cmd->argc)
1720                         cmd->cmdline = text;
1721                 if (cmd->argc == 1)
1722                         cmd->args = text;
1723
1724                 if (!COM_ParseToken_Console(&text))
1725                         return;
1726
1727                 if (cmd->argc < MAX_ARGS)
1728                 {
1729                         l = (int)strlen(com_token) + 1;
1730                         if (cmd->cbuf->tokenizebufferpos + l > CMD_TOKENIZELENGTH)
1731                         {
1732                                 Con_Printf(CON_WARN "Cmd_TokenizeString: ran out of %i character buffer space for command arguments\n", CMD_TOKENIZELENGTH);
1733                                 break;
1734                         }
1735                         memcpy (cmd->cbuf->tokenizebuffer + cmd->cbuf->tokenizebufferpos, com_token, l);
1736                         cmd->argv[cmd->argc] = cmd->cbuf->tokenizebuffer + cmd->cbuf->tokenizebufferpos;
1737                         cmd->cbuf->tokenizebufferpos += l;
1738                         cmd->argc++;
1739                 }
1740         }
1741 }
1742
1743
1744 /*
1745 ============
1746 Cmd_AddCommand
1747 ============
1748 */
1749 void Cmd_AddCommand(unsigned flags, const char *cmd_name, xcommand_t function, const char *description)
1750 {
1751         cmd_function_t *func;
1752         cmd_function_t *prev, *current;
1753         cmd_state_t *cmd;
1754         int i;
1755
1756         for (i = 0; i < 2; i++)
1757         {
1758                 cmd = cmd_iter_all[i].cmd;
1759                 if (flags & cmd->cmd_flagsmask)
1760                 {
1761                         // fail if the command is a variable name
1762                         if (Cvar_FindVar(cmd->cvars, cmd_name, ~0))
1763                         {
1764                                 Con_Printf(CON_WARN "Cmd_AddCommand: %s already defined as a var\n", cmd_name);
1765                                 return;
1766                         }
1767
1768                         if (function)
1769                         {
1770                                 // fail if the command already exists in this interpreter
1771                                 for (func = cmd->engine_functions; func; func = func->next)
1772                                 {
1773                                         if (!strcmp(cmd_name, func->name))
1774                                         {
1775                                                 Con_Printf(CON_WARN "Cmd_AddCommand: %s already defined\n", cmd_name);
1776                                                 continue;
1777                                         }
1778                                 }
1779
1780                                 func = (cmd_function_t *)Mem_Alloc(cmd->mempool, sizeof(cmd_function_t));
1781                                 func->flags = flags;
1782                                 func->name = cmd_name;
1783                                 func->function = function;
1784                                 func->description = description;
1785                                 func->next = cmd->engine_functions;
1786
1787                                 // insert it at the right alphanumeric position
1788                                 for (prev = NULL, current = cmd->engine_functions; current && strcmp(current->name, func->name) < 0; prev = current, current = current->next)
1789                                         ;
1790                                 if (prev) {
1791                                         prev->next = func;
1792                                 }
1793                                 else {
1794                                         cmd->engine_functions = func;
1795                                 }
1796                                 func->next = current;
1797                         }
1798                         else
1799                         {
1800                                 // mark qcfunc if the function already exists in the qc_functions list
1801                                 for (func = cmd->userdefined->qc_functions; func; func = func->next)
1802                                 {
1803                                         if (!strcmp(cmd_name, func->name))
1804                                         {
1805                                                 func->qcfunc = true; //[515]: csqc
1806                                                 continue;
1807                                         }
1808                                 }
1809
1810                                 func = (cmd_function_t *)Mem_Alloc(cmd->mempool, sizeof(cmd_function_t));
1811                                 func->flags = flags;
1812                                 func->name = cmd_name;
1813                                 func->function = function;
1814                                 func->description = description;
1815                                 func->qcfunc = true; //[515]: csqc
1816                                 func->next = cmd->userdefined->qc_functions;
1817
1818                                 // bones_was_here: if this QC command overrides an engine command, store its pointer
1819                                 // to avoid doing this search at invocation if QC declines to handle this command.
1820                                 for (cmd_function_t *f = cmd->engine_functions; f; f = f->next)
1821                                 {
1822                                         if (!strcmp(cmd_name, f->name))
1823                                         {
1824                                                 Con_DPrintf("Adding QC override of engine command %s\n", cmd_name);
1825                                                 func->overridden = f;
1826                                                 break;
1827                                         }
1828                                 }
1829
1830                                 // insert it at the right alphanumeric position
1831                                 for (prev = NULL, current = cmd->userdefined->qc_functions; current && strcmp(current->name, func->name) < 0; prev = current, current = current->next)
1832                                         ;
1833                                 if (prev) {
1834                                         prev->next = func;
1835                                 }
1836                                 else {
1837                                         cmd->userdefined->qc_functions = func;
1838                                 }
1839                                 func->next = current;
1840                         }
1841                 }
1842         }
1843 }
1844
1845 /*
1846 ============
1847 Cmd_Exists
1848 ============
1849 */
1850 qbool Cmd_Exists (cmd_state_t *cmd, const char *cmd_name)
1851 {
1852         cmd_function_t  *func;
1853
1854         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1855                 if (!strcmp(cmd_name, func->name))
1856                         return true;
1857
1858         for (func=cmd->engine_functions ; func ; func=func->next)
1859                 if (!strcmp (cmd_name,func->name))
1860                         return true;
1861
1862         return false;
1863 }
1864
1865
1866 /*
1867 ============
1868 Cmd_CompleteCommand
1869 ============
1870 */
1871 const char *Cmd_CompleteCommand (cmd_state_t *cmd, const char *partial)
1872 {
1873         cmd_function_t *func;
1874         size_t len;
1875
1876         len = strlen(partial);
1877
1878         if (!len)
1879                 return NULL;
1880
1881 // check functions
1882         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1883                 if (!strncasecmp(partial, func->name, len))
1884                         return func->name;
1885
1886         for (func = cmd->engine_functions; func; func = func->next)
1887                 if (!strncasecmp(partial, func->name, len))
1888                         return func->name;
1889
1890         return NULL;
1891 }
1892
1893 /*
1894         Cmd_CompleteCountPossible
1895
1896         New function for tab-completion system
1897         Added by EvilTypeGuy
1898         Thanks to Fett erich@heintz.com
1899         Thanks to taniwha
1900
1901 */
1902 int Cmd_CompleteCountPossible (cmd_state_t *cmd, const char *partial)
1903 {
1904         cmd_function_t *func;
1905         size_t len;
1906         int h;
1907
1908         h = 0;
1909         len = strlen(partial);
1910
1911         if (!len)
1912                 return 0;
1913
1914         // Loop through the command list and count all partial matches
1915         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1916                 if (!strncasecmp(partial, func->name, len))
1917                         h++;
1918
1919         for (func = cmd->engine_functions; func; func = func->next)
1920                 if (!strncasecmp(partial, func->name, len))
1921                         h++;
1922
1923         return h;
1924 }
1925
1926 /*
1927         Cmd_CompleteBuildList
1928
1929         New function for tab-completion system
1930         Added by EvilTypeGuy
1931         Thanks to Fett erich@heintz.com
1932         Thanks to taniwha
1933
1934 */
1935 const char **Cmd_CompleteBuildList (cmd_state_t *cmd, const char *partial)
1936 {
1937         cmd_function_t *func;
1938         size_t len = 0;
1939         size_t bpos = 0;
1940         size_t sizeofbuf = (Cmd_CompleteCountPossible (cmd, partial) + 1) * sizeof (const char *);
1941         const char **buf;
1942
1943         len = strlen(partial);
1944         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
1945         // Loop through the functions lists and print all matches
1946         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1947                 if (!strncasecmp(partial, func->name, len))
1948                         buf[bpos++] = func->name;
1949         for (func = cmd->engine_functions; func; func = func->next)
1950                 if (!strncasecmp(partial, func->name, len))
1951                         buf[bpos++] = func->name;
1952
1953         buf[bpos] = NULL;
1954         return buf;
1955 }
1956
1957 // written by LadyHavoc
1958 void Cmd_CompleteCommandPrint (cmd_state_t *cmd, const char *partial)
1959 {
1960         cmd_function_t *func;
1961         size_t len = strlen(partial);
1962         // Loop through the command list and print all matches
1963         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1964                 if (!strncasecmp(partial, func->name, len))
1965                         Con_Printf("^2%s^7: %s\n", func->name, func->description);
1966         for (func = cmd->engine_functions; func; func = func->next)
1967                 if (!strncasecmp(partial, func->name, len))
1968                         Con_Printf("^2%s^7: %s\n", func->name, func->description);
1969 }
1970
1971 /*
1972         Cmd_CompleteAlias
1973
1974         New function for tab-completion system
1975         Added by EvilTypeGuy
1976         Thanks to Fett erich@heintz.com
1977         Thanks to taniwha
1978
1979 */
1980 const char *Cmd_CompleteAlias (cmd_state_t *cmd, const char *partial)
1981 {
1982         cmd_alias_t *alias;
1983         size_t len;
1984
1985         len = strlen(partial);
1986
1987         if (!len)
1988                 return NULL;
1989
1990         // Check functions
1991         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
1992                 if (!strncasecmp(partial, alias->name, len))
1993                         return alias->name;
1994
1995         return NULL;
1996 }
1997
1998 // written by LadyHavoc
1999 void Cmd_CompleteAliasPrint (cmd_state_t *cmd, const char *partial)
2000 {
2001         cmd_alias_t *alias;
2002         size_t len = strlen(partial);
2003         // Loop through the alias list and print all matches
2004         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2005                 if (!strncasecmp(partial, alias->name, len))
2006                         Con_Printf("^5%s^7: %s", alias->name, alias->value);
2007 }
2008
2009
2010 /*
2011         Cmd_CompleteAliasCountPossible
2012
2013         New function for tab-completion system
2014         Added by EvilTypeGuy
2015         Thanks to Fett erich@heintz.com
2016         Thanks to taniwha
2017
2018 */
2019 int Cmd_CompleteAliasCountPossible (cmd_state_t *cmd, const char *partial)
2020 {
2021         cmd_alias_t     *alias;
2022         size_t          len;
2023         int                     h;
2024
2025         h = 0;
2026
2027         len = strlen(partial);
2028
2029         if (!len)
2030                 return 0;
2031
2032         // Loop through the command list and count all partial matches
2033         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2034                 if (!strncasecmp(partial, alias->name, len))
2035                         h++;
2036
2037         return h;
2038 }
2039
2040 /*
2041         Cmd_CompleteAliasBuildList
2042
2043         New function for tab-completion system
2044         Added by EvilTypeGuy
2045         Thanks to Fett erich@heintz.com
2046         Thanks to taniwha
2047
2048 */
2049 const char **Cmd_CompleteAliasBuildList (cmd_state_t *cmd, const char *partial)
2050 {
2051         cmd_alias_t *alias;
2052         size_t len = 0;
2053         size_t bpos = 0;
2054         size_t sizeofbuf = (Cmd_CompleteAliasCountPossible (cmd, partial) + 1) * sizeof (const char *);
2055         const char **buf;
2056
2057         len = strlen(partial);
2058         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
2059         // Loop through the alias list and print all matches
2060         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2061                 if (!strncasecmp(partial, alias->name, len))
2062                         buf[bpos++] = alias->name;
2063
2064         buf[bpos] = NULL;
2065         return buf;
2066 }
2067
2068 // TODO: Make this more generic?
2069 void Cmd_ClearCSQCCommands (cmd_state_t *cmd)
2070 {
2071         cmd_function_t *func;
2072         cmd_function_t **next = &cmd->userdefined->qc_functions;
2073
2074         while(*next)
2075         {
2076                 func = *next;
2077                 *next = func->next;
2078                 Z_Free(func);
2079         }
2080 }
2081
2082 extern cvar_t sv_cheats;
2083
2084 /*
2085  * Cloudwalk FIXME: This idea sounded great in my head but...
2086  * How do we handle commands that can be received by the client,
2087  * but which the server can also execute locally?
2088  *
2089  * If we create a callback where the engine will forward to server
2090  * but try to execute the command locally if it's dedicated,
2091  * we're back to intermixing client and server code which I'm
2092  * trying to avoid. There's no other way I can think of to
2093  * implement that behavior that doesn't involve an #ifdef, or
2094  * making a mess of hooks.
2095  */
2096 qbool Cmd_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2097 {
2098         if (func->function)
2099                 func->function(cmd);
2100         else
2101                 Con_Printf(CON_WARN "Command \"%s\" can not be executed\n", Cmd_Argv(cmd, 0));
2102         return true;
2103 }
2104
2105 qbool Cmd_CL_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2106 {
2107         // TODO: Assign these functions to QC commands directly?
2108         if(func->qcfunc)
2109         {
2110                 if(((func->flags & CF_CLIENT) && CL_VM_ConsoleCommand(text)) ||
2111                    ((func->flags & CF_SERVER) && SV_VM_ConsoleCommand(text)))
2112                         return true;
2113
2114                 if (func->overridden) // If this QC command overrides an engine command,
2115                         func = func->overridden; // fall back to that command.
2116         }
2117         if (func->flags & CF_SERVER_FROM_CLIENT)
2118         {
2119                 if(host_isclient.integer)
2120                 {
2121                         CL_ForwardToServer_f(cmd);
2122                         return true;
2123                 }
2124                 else if(!(func->flags & CF_SERVER))
2125                 {
2126                         Con_Printf(CON_WARN "Cannot execute client commands from a dedicated server console.\n");
2127                         return true;
2128                 }
2129         }
2130         return Cmd_Callback(cmd, func, text, src);
2131 }
2132
2133 qbool Cmd_SV_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2134 {
2135         if(func->qcfunc && (func->flags & CF_SERVER))
2136                 return SV_VM_ConsoleCommand(text);
2137         else if (src == src_client)
2138         {
2139                 if((func->flags & CF_CHEAT) && !sv_cheats.integer)
2140                         SV_ClientPrintf(CON_WARN "No cheats allowed. The server must have sv_cheats set to 1\n");
2141                 else
2142                         func->function(cmd);
2143                 return true;
2144         }
2145         return false;
2146 }
2147
2148 /*
2149 ============
2150 Cmd_ExecuteString
2151
2152 A complete command line has been parsed, so try to execute it
2153 FIXME: lookupnoadd the token to speed search?
2154 ============
2155 */
2156 void Cmd_ExecuteString (cmd_state_t *cmd, const char *text, cmd_source_t src, qbool lockmutex)
2157 {
2158         int oldpos;
2159         cmd_function_t *func;
2160         cmd_alias_t *a;
2161
2162         if (lockmutex)
2163                 Cbuf_Lock(cmd->cbuf);
2164         oldpos = cmd->cbuf->tokenizebufferpos;
2165         cmd->source = src;
2166
2167         Cmd_TokenizeString (cmd, text);
2168
2169 // execute the command line
2170         if (!Cmd_Argc(cmd))
2171                 goto done; // no tokens
2172
2173 // check functions
2174         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2175                 if (!strcasecmp(cmd->argv[0], func->name))
2176                         if(cmd->Handle(cmd, func, text, src))
2177                                 goto functions_done;
2178
2179         for (func = cmd->engine_functions; func; func=func->next)
2180                 if (!strcasecmp (cmd->argv[0], func->name))
2181                         if(cmd->Handle(cmd, func, text, src))
2182                                 goto functions_done;
2183
2184 functions_done:
2185         // If it's a client command and wasn't found and handled, say so.
2186         // Also don't let clients call server aliases.
2187         if (cmd->source == src_client)
2188         {
2189                 if (!func)
2190                         Con_Printf("Client \"%s\" tried to execute \"%s\"\n", host_client->name, text);
2191                 goto done;
2192         }
2193
2194 // check alias
2195         // Execute any alias with the same name as a command after the command.
2196         for (a=cmd->userdefined->alias ; a ; a=a->next)
2197         {
2198                 if (!strcasecmp (cmd->argv[0], a->name))
2199                 {
2200                         Cmd_ExecuteAlias(cmd, a);
2201                         goto done;
2202                 }
2203         }
2204
2205         // If the command was found and handled don't try to handle it as a cvar.
2206         if (func)
2207                 goto done;
2208
2209 // check cvars
2210         if (!Cvar_Command(cmd) && host.framecount > 0)
2211                 Con_Printf(CON_WARN "Unknown command \"%s\"\n", Cmd_Argv(cmd, 0));
2212 done:
2213         cmd->cbuf->tokenizebufferpos = oldpos;
2214         if (lockmutex)
2215                 Cbuf_Unlock(cmd->cbuf);
2216 }
2217
2218 /*
2219 ================
2220 Cmd_CheckParm
2221
2222 Returns the position (1 to argc-1) in the command's argument list
2223 where the given parameter apears, or 0 if not present
2224 ================
2225 */
2226
2227 int Cmd_CheckParm (cmd_state_t *cmd, const char *parm)
2228 {
2229         int i;
2230
2231         if (!parm)
2232         {
2233                 Con_Printf(CON_WARN "Cmd_CheckParm: NULL");
2234                 return 0;
2235         }
2236
2237         for (i = 1; i < Cmd_Argc (cmd); i++)
2238                 if (!strcasecmp (parm, Cmd_Argv(cmd, i)))
2239                         return i;
2240
2241         return 0;
2242 }
2243
2244
2245
2246 void Cmd_SaveInitState(void)
2247 {
2248         cmd_iter_t *cmd_iter;
2249         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
2250         {
2251                 cmd_state_t *cmd = cmd_iter->cmd;
2252                 cmd_function_t *f;
2253                 cmd_alias_t *a;
2254                 for (f = cmd->userdefined->qc_functions; f; f = f->next)
2255                         f->initstate = true;
2256                 for (f = cmd->engine_functions; f; f = f->next)
2257                         f->initstate = true;
2258                 for (a = cmd->userdefined->alias; a; a = a->next)
2259                 {
2260                         a->initstate = true;
2261                         a->initialvalue = Mem_strdup(zonemempool, a->value);
2262                 }
2263         }
2264         Cvar_SaveInitState(&cvars_all);
2265 }
2266
2267 void Cmd_RestoreInitState(void)
2268 {
2269         cmd_iter_t *cmd_iter;
2270         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
2271         {
2272                 cmd_state_t *cmd = cmd_iter->cmd;
2273                 cmd_function_t *f, **fp;
2274                 cmd_alias_t *a, **ap;
2275                 for (fp = &cmd->userdefined->qc_functions; (f = *fp);)
2276                 {
2277                         if (f->initstate)
2278                                 fp = &f->next;
2279                         else
2280                         {
2281                                 // destroy this command, it didn't exist at init
2282                                 Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
2283                                 *fp = f->next;
2284                                 Z_Free(f);
2285                         }
2286                 }
2287                 for (fp = &cmd->engine_functions; (f = *fp);)
2288                 {
2289                         if (f->initstate)
2290                                 fp = &f->next;
2291                         else
2292                         {
2293                                 // destroy this command, it didn't exist at init
2294                                 Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
2295                                 *fp = f->next;
2296                                 Z_Free(f);
2297                         }
2298                 }
2299                 for (ap = &cmd->userdefined->alias; (a = *ap);)
2300                 {
2301                         if (a->initstate)
2302                         {
2303                                 // restore this alias, it existed at init
2304                                 if (strcmp(a->value ? a->value : "", a->initialvalue ? a->initialvalue : ""))
2305                                 {
2306                                         Con_DPrintf("Cmd_RestoreInitState: Restoring alias %s\n", a->name);
2307                                         if (a->value)
2308                                                 Z_Free(a->value);
2309                                         a->value = Mem_strdup(zonemempool, a->initialvalue);
2310                                 }
2311                                 ap = &a->next;
2312                         }
2313                         else
2314                         {
2315                                 // free this alias, it didn't exist at init...
2316                                 Con_DPrintf("Cmd_RestoreInitState: Destroying alias %s\n", a->name);
2317                                 *ap = a->next;
2318                                 if (a->value)
2319                                         Z_Free(a->value);
2320                                 Z_Free(a);
2321                         }
2322                 }
2323         }
2324         Cvar_RestoreInitState(&cvars_all);
2325 }
2326
2327 void Cmd_NoOperation_f(cmd_state_t *cmd)
2328 {
2329 }