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_client;
  26 cmd_state_t *cmd_server;
  27 cmd_state_t *cmd_serverfromclient;
  28
  29 cmd_userdefined_t cmd_userdefined_all;
  30 cmd_userdefined_t cmd_userdefined_null;
  31
  32 typedef struct cmd_iter_s {
  33         cmd_state_t *cmd;
  34 }
  35 cmd_iter_t;
  36
  37 static cmd_iter_t *cmd_iter_all;
  38
  39 mempool_t *cbuf_mempool;
  40
  41 // we only run the +whatever commandline arguments once
  42 qbool host_stuffcmdsrun = false;
  43
  44 //=============================================================================
  45
  46 void Cbuf_Lock(cmd_buf_t *cbuf)
  47 {
  48         Thread_LockMutex(cbuf->lock);
  49 }
  50
  51 void Cbuf_Unlock(cmd_buf_t *cbuf)
  52 {
  53         Thread_UnlockMutex(cbuf->lock);
  54 }
  55
  56
  57 /*
  58 ============
  59 Cmd_Wait_f
  60
  61 Causes execution of the remainder of the command buffer to be delayed until
  62 next frame.  This allows commands like:
  63 bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
  64 ============
  65 */
  66 static void Cmd_Wait_f (cmd_state_t *cmd)
  67 {
  68         cmd->cbuf->wait = true;
  69 }
  70
  71 /*
  72 ============
  73 Cmd_Defer_f
  74
  75 Cause a command to be executed after a delay.
  76 ============
  77 */
  78 static cmd_input_t *Cbuf_LinkGet(cmd_buf_t *cbuf, cmd_input_t *existing);
  79 static void Cmd_Defer_f (cmd_state_t *cmd)
  80 {
  81         cmd_input_t *current;
  82         cmd_buf_t *cbuf = cmd->cbuf;
  83
  84         if(Cmd_Argc(cmd) == 1)
  85         {
  86                 if(List_Is_Empty(&cbuf->deferred))
  87                         Con_Printf("No commands are pending.\n");
  88                 else
  89                 {
  90                         llist_t *pos;
  91                 List_For_Each(pos, &cbuf->deferred)
  92                 {
  93                                 current = List_Entry(*pos, cmd_input_t, list);
  94                                 Con_Printf("-> In %9.2f: %s\n", current->delay, current->text);
  95                         }
  96                 }
  97         }
  98         else if(Cmd_Argc(cmd) == 2 && !strcasecmp("clear", Cmd_Argv(cmd, 1)))
  99         {
 100                 while(!List_Is_Empty(&cbuf->deferred))
 101                         List_Move_Tail(cbuf->deferred.next, &cbuf->free);
 102         }
 103         else if(Cmd_Argc(cmd) == 3)
 104         {
 105                 const char *text = Cmd_Argv(cmd, 2);
 106                 current = Cbuf_LinkGet(cbuf, NULL);
 107                 current->length = strlen(text);
 108                 current->source = cmd;
 109                 current->delay = atof(Cmd_Argv(cmd, 1));
 110
 111                 if(current->size < current->length)
 112                 {
 113                         current->text = (char *)Mem_Realloc(cbuf_mempool, current->text, current->length + 1);
 114                         current->size = current->length;
 115                 }
 116
 117                 strlcpy(current->text, text, current->length + 1);
 118
 119                 List_Move_Tail(&current->list, &cbuf->deferred);
 120         }
 121         else
 122         {
 123                 Con_Printf("usage: defer <seconds> <command>\n"
 124                            "       defer clear\n");
 125                 return;
 126         }
 127 }
 128
 129 /*
 130 ============
 131 Cmd_Centerprint_f
 132
 133 Print something to the center of the screen using SCR_Centerprint
 134 ============
 135 */
 136 static void Cmd_Centerprint_f (cmd_state_t *cmd)
 137 {
 138         char msg[MAX_INPUTLINE];
 139         unsigned int i, c, p;
 140         c = Cmd_Argc(cmd);
 141         if(c >= 2)
 142         {
 143                 strlcpy(msg, Cmd_Argv(cmd,1), sizeof(msg));
 144                 for(i = 2; i < c; ++i)
 145                 {
 146                         strlcat(msg, " ", sizeof(msg));
 147                         strlcat(msg, Cmd_Argv(cmd, i), sizeof(msg));
 148                 }
 149                 c = (unsigned int)strlen(msg);
 150                 for(p = 0, i = 0; i < c; ++i)
 151                 {
 152                         if(msg[i] == '\\')
 153                         {
 154                                 if(msg[i+1] == 'n')
 155                                         msg[p++] = '\n';
 156                                 else if(msg[i+1] == '\\')
 157                                         msg[p++] = '\\';
 158                                 else {
 159                                         msg[p++] = '\\';
 160                                         msg[p++] = msg[i+1];
 161                                 }
 162                                 ++i;
 163                         } else {
 164                                 msg[p++] = msg[i];
 165                         }
 166                 }
 167                 msg[p] = '\0';
 168                 SCR_CenterPrint(msg);
 169         }
 170 }
 171
 172 /*
 173 =============================================================================
 174
 175                                                 COMMAND BUFFER
 176
 177 =============================================================================
 178 */
 179
 180 static cmd_input_t *Cbuf_LinkGet(cmd_buf_t *cbuf, cmd_input_t *existing)
 181 {
 182         cmd_input_t *ret = NULL;
 183         if(existing && existing->pending)
 184                 ret = existing;
 185         else if(!List_Is_Empty(&cbuf->free))
 186         {
 187                 ret = List_Entry(*cbuf->free.next, cmd_input_t, list);
 188                 ret->length = 0;
 189                 ret->pending = false;
 190         }
 191         return ret;
 192 }
 193
 194 static cmd_input_t *Cmd_AllocInputNode(void)
 195 {
 196         cmd_input_t *node = (cmd_input_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_input_t));
 197         node->list.prev = node->list.next = &node->list;
 198         node->size = node->length = node->pending = 0;
 199         return node;
 200 }
 201
 202 static size_t Cmd_ParseInput (cmd_input_t **output, char **input)
 203 {
 204         size_t pos, cmdsize = 0, start = 0;
 205         qbool command = false, lookahead = false;
 206         qbool quotes = false, comment = false;
 207         qbool escaped = false;
 208
 209         /*
 210          * The Quake command-line is super basic. It can be entered in the console
 211          * or in config files. A semicolon is used to terminate a command and chain
 212          * them together. Otherwise, a newline delineates command input.
 213          *
 214          * In most engines, the Quake command-line is a simple linear text buffer that
 215          * is parsed when it executes. In Darkplaces, we use a linked list of command
 216          * input and parse the input on the spot.
 217          *
 218          * This was done because Darkplaces allows multiple command interpreters on the
 219          * same thread. Previously, each interpreter maintained its own buffer and this
 220          * caused problems related to execution order, and maintaining a single simple
 221          * buffer for all interpreters makes it non-trivial to keep track of which
 222          * command should execute on which interpreter.
 223          */
 224
 225         // Run until command and lookahead are both true, or until we run out of input.
 226         for (pos = 0; (*input)[pos]; pos++)
 227         {
 228                 // Look for newlines and semicolons. Ignore semicolons in quotes.
 229                 switch((*input)[pos])
 230                 {
 231                 case '\r':
 232                 case '\n':
 233                         command = false;
 234                         comment = false;
 235                         break;
 236                 default:
 237                         if(!comment) // Not a newline so far. Still not a valid command yet.
 238                         {
 239                                 if(!quotes && (*input)[pos] == ';') // Ignore semicolons in quotes.
 240                                         command = false;
 241                                 else if (ISCOMMENT((*input), pos)) // Comments
 242                                 {
 243                                         comment = true;
 244                                         command = false;
 245                                 }
 246                                 else
 247                                 {
 248                                         command = true;
 249                                         if(!lookahead)
 250                                         {
 251                                                 if(!cmdsize)
 252                                                         start = pos;
 253                                                 cmdsize++;
 254                                         }
 255
 256                                         switch((*input)[pos])
 257                                         {
 258                                         case '"':
 259                                                 if (!escaped)
 260                                                         quotes = !quotes;
 261                                                 else
 262                                                         escaped = false;
 263                                                 break;
 264                                         case '\\':
 265                                                 if (!escaped && quotes)
 266                                                         escaped = true;
 267                                                 else if (escaped)
 268                                                         escaped = false;
 269                                                 break;
 270                                         }
 271                                 }
 272                         }
 273                 }
 274                 if(cmdsize && !command)
 275                         lookahead = true;
 276
 277                 if(command && lookahead)
 278                         break;
 279         }
 280
 281         if(cmdsize)
 282         {
 283                 size_t offset = 0;
 284
 285                 if(!*output)
 286                         *output = Cmd_AllocInputNode();
 287
 288                 if((*output)->pending)
 289                         offset = (*output)->length;
 290
 291                 (*output)->length += cmdsize;
 292
 293                 if((*output)->size < (*output)->length)
 294                 {
 295                         (*output)->text = (char *)Mem_Realloc(cbuf_mempool, (*output)->text, (*output)->length + 1);
 296                         (*output)->size = (*output)->length;
 297                 }
 298
 299                 strlcpy(&(*output)->text[offset], &(*input)[start], cmdsize + 1);
 300                 (*output)->pending = !lookahead;
 301         }
 302
 303         // Set input to its new position. Can be NULL.
 304         *input = &(*input)[pos];
 305
 306         return cmdsize;
 307 }
 308
 309 // Cloudwalk: Not happy with this, but it works.
 310 static void Cbuf_LinkCreate(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text)
 311 {
 312         char *in = (char *)&text[0];
 313         cmd_buf_t *cbuf = cmd->cbuf;
 314         size_t totalsize = 0, newsize = 0;
 315         cmd_input_t *current = NULL;
 316
 317         // Slide the pointer down until we reach the end
 318         while(*in)
 319         {
 320                 current = Cbuf_LinkGet(cbuf, existing);
 321                 newsize = Cmd_ParseInput(&current, &in);
 322
 323                 // Valid command
 324                 if(newsize)
 325                 {
 326                         if(current != existing)
 327                         {
 328                                 current->source = cmd;
 329                                 List_Move_Tail(&current->list, head);
 330                         }
 331
 332                         totalsize += newsize;
 333                 }
 334                 else if (current == existing && !totalsize)
 335                         current->pending = false;
 336                 current = NULL;
 337         }
 338
 339         cbuf->size += totalsize;
 340 }
 341
 342 /*
 343 ============
 344 Cbuf_AddText
 345
 346 Adds command text at the end of the buffer
 347 ============
 348 */
 349 void Cbuf_AddText (cmd_state_t *cmd, const char *text)
 350 {
 351         size_t l = strlen(text);
 352         cmd_buf_t *cbuf = cmd->cbuf;
 353         llist_t llist = {&llist, &llist};
 354
 355         Cbuf_Lock(cbuf);
 356
 357         if (cbuf->maxsize - cbuf->size <= l)
 358                 Con_Print("Cbuf_AddText: overflow\n");
 359         else
 360         {
 361                 Cbuf_LinkCreate(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(*cbuf->start.prev, cmd_input_t, list)), text);
 362                 if(!List_Is_Empty(&llist))
 363                         List_Splice_Tail(&llist, &cbuf->start);
 364         }
 365         Cbuf_Unlock(cbuf);
 366 }
 367
 368 /*
 369 ============
 370 Cbuf_InsertText
 371
 372 Adds command text immediately after the current command
 373 FIXME: actually change the command buffer to do less copying
 374 ============
 375 */
 376 void Cbuf_InsertText (cmd_state_t *cmd, const char *text)
 377 {
 378         cmd_buf_t *cbuf = cmd->cbuf;
 379         llist_t llist = {&llist, &llist};
 380         size_t l = strlen(text);
 381
 382         Cbuf_Lock(cbuf);
 383
 384         // we need to memmove the existing text and stuff this in before it...
 385         if (cbuf->size + l >= cbuf->maxsize)
 386                 Con_Print("Cbuf_InsertText: overflow\n");
 387         else
 388         {
 389                 Cbuf_LinkCreate(cmd, &llist, List_Entry(*cbuf->start.next, cmd_input_t, list), text);
 390                 if(!List_Is_Empty(&llist))
 391                         List_Splice(&llist, &cbuf->start);
 392         }
 393
 394         Cbuf_Unlock(cbuf);
 395 }
 396
 397 /*
 398 ============
 399 Cbuf_Execute_Deferred --blub
 400 ============
 401 */
 402 static void Cbuf_Execute_Deferred (cmd_buf_t *cbuf)
 403 {
 404         llist_t *pos;
 405         cmd_input_t *current;
 406         double eat;
 407
 408         if (host.realtime - cbuf->deferred_oldtime < 0 || host.realtime - cbuf->deferred_oldtime > 1800)
 409                 cbuf->deferred_oldtime = host.realtime;
 410         eat = host.realtime - cbuf->deferred_oldtime;
 411         if (eat < (1.0 / 120.0))
 412                 return;
 413         cbuf->deferred_oldtime = host.realtime;
 414
 415     List_For_Each(pos, &cbuf->deferred)
 416         {
 417                 current = List_Entry(*pos, cmd_input_t, list);
 418                 current->delay -= eat;
 419                 if(current->delay <= 0)
 420                 {
 421                         cbuf->size += current->length;
 422                         List_Move(pos, &cbuf->start);
 423                         // We must return and come back next frame or the engine will freeze. Fragile... like glass :3
 424                         return;
 425                 }
 426         }
 427 }
 428
 429 /*
 430 ============
 431 Cbuf_Execute
 432 ============
 433 */
 434 static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias );
 435 void Cbuf_Execute (cmd_buf_t *cbuf)
 436 {
 437         cmd_input_t *current;
 438         char preprocessed[MAX_INPUTLINE];
 439         char *firstchar;
 440
 441         // LadyHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
 442         cbuf->tokenizebufferpos = 0;
 443
 444         while (!List_Is_Empty(&cbuf->start))
 445         {
 446                 /*
 447                  * Delete the text from the command buffer and move remaining
 448                  * commands down. This is necessary because commands (exec, alias)
 449                  * can insert data at the beginning of the text buffer
 450                  */
 451                 current = List_Entry(*cbuf->start.next, cmd_input_t, list);
 452
 453                 // Recycle memory so using WASD doesn't cause a malloc and free
 454                 List_Move_Tail(&current->list, &cbuf->free);
 455
 456                 /*
 457                  * Assume we're rolling with the current command-line and
 458                  * always set this false because alias expansion or cbuf insertion
 459                  * without a newline may set this true, and cause weirdness.
 460                  */
 461                 current->pending = false;
 462
 463                 cbuf->size -= current->length;
 464
 465                 firstchar = current->text;
 466                 while(*firstchar && ISWHITESPACE(*firstchar))
 467                         ++firstchar;
 468                 if((strncmp(firstchar, "alias", 5)   || !ISWHITESPACE(firstchar[5])) &&
 469                    (strncmp(firstchar, "bind", 4)    || !ISWHITESPACE(firstchar[4])) &&
 470                    (strncmp(firstchar, "in_bind", 7) || !ISWHITESPACE(firstchar[7])))
 471                 {
 472                         if(Cmd_PreprocessString(current->source, current->text, preprocessed, sizeof(preprocessed), NULL ))
 473                                 Cmd_ExecuteString(current->source, preprocessed, src_local, false);
 474                 }
 475                 else
 476                 {
 477                         Cmd_ExecuteString (current->source, current->text, src_local, false);
 478                 }
 479
 480                 current = NULL;
 481
 482                 if (cbuf->wait)
 483                 {
 484                         /*
 485                          * Skip out while text still remains in
 486                          * buffer, leaving it for next frame
 487                          */
 488                         cbuf->wait = false;
 489                         break;
 490                 }
 491         }
 492 }
 493
 494 /*
 495 ===================
 496 Cbuf_Frame_Input
 497
 498 Add them exactly as if they had been typed at the console
 499 ===================
 500 */
 501 static void Cbuf_Frame_Input(void)
 502 {
 503         char *line;
 504
 505         while ((line = Sys_ConsoleInput()))
 506         {
 507                 if (cls.state == ca_dedicated)
 508                         Cbuf_AddText(cmd_server, line);
 509                 else
 510                         Cbuf_AddText(cmd_client, line);
 511         }
 512 }
 513
 514 void Cbuf_Frame(cmd_buf_t *cbuf)
 515 {
 516         // check for commands typed to the host
 517         Cbuf_Frame_Input();
 518
 519 //      R_TimeReport("preconsole");
 520
 521         // execute commands queued with the defer command
 522         Cbuf_Execute_Deferred(cbuf);
 523         if (cbuf->size)
 524         {
 525                 SV_LockThreadMutex();
 526                 Cbuf_Execute(cbuf);
 527                 SV_UnlockThreadMutex();
 528         }
 529
 530 //      R_TimeReport("console");
 531 }
 532
 533 /*
 534 ==============================================================================
 535
 536                                                 SCRIPT COMMANDS
 537
 538 ==============================================================================
 539 */
 540
 541 /*
 542 ===============
 543 Cmd_StuffCmds_f
 544
 545 Adds command line parameters as script statements
 546 Commands lead with a +, and continue until a - or another +
 547 quake +prog jctest.qp +cmd amlev1
 548 quake -nosound +cmd amlev1
 549 ===============
 550 */
 551 static void Cmd_StuffCmds_f (cmd_state_t *cmd)
 552 {
 553         int             i, j, l;
 554         // this is for all commandline options combined (and is bounds checked)
 555         char    build[MAX_INPUTLINE];
 556
 557         if (Cmd_Argc (cmd) != 1)
 558         {
 559                 Con_Print("stuffcmds : execute command line parameters\n");
 560                 return;
 561         }
 562
 563         // no reason to run the commandline arguments twice
 564         if (host_stuffcmdsrun)
 565                 return;
 566
 567         host_stuffcmdsrun = true;
 568         build[0] = 0;
 569         l = 0;
 570         for (i = 0;i < sys.argc;i++)
 571         {
 572                 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)
 573                 {
 574                         j = 1;
 575                         while (sys.argv[i][j])
 576                                 build[l++] = sys.argv[i][j++];
 577                         i++;
 578                         for (;i < sys.argc;i++)
 579                         {
 580                                 if (!sys.argv[i])
 581                                         continue;
 582                                 if ((sys.argv[i][0] == '+' || sys.argv[i][0] == '-') && (sys.argv[i][1] < '0' || sys.argv[i][1] > '9'))
 583                                         break;
 584                                 if (l + strlen(sys.argv[i]) + 4 > sizeof(build) - 1)
 585                                         break;
 586                                 build[l++] = ' ';
 587                                 if (strchr(sys.argv[i], ' '))
 588                                         build[l++] = '\"';
 589                                 for (j = 0;sys.argv[i][j];j++)
 590                                         build[l++] = sys.argv[i][j];
 591                                 if (strchr(sys.argv[i], ' '))
 592                                         build[l++] = '\"';
 593                         }
 594                         build[l++] = '\n';
 595                         i--;
 596                 }
 597         }
 598         // now terminate the combined string and prepend it to the command buffer
 599         // we already reserved space for the terminator
 600         build[l++] = 0;
 601         Cbuf_InsertText (cmd, build);
 602 }
 603
 604 static void Cmd_Exec(cmd_state_t *cmd, const char *filename)
 605 {
 606         char *f;
 607         size_t filenameLen = strlen(filename);
 608         qbool isdefaultcfg =
 609                 !strcmp(filename, "default.cfg") ||
 610                 (filenameLen >= 12 && !strcmp(filename + filenameLen - 12, "/default.cfg"));
 611
 612         if (!strcmp(filename, "config.cfg"))
 613         {
 614                 filename = CONFIGFILENAME;
 615                 if (Sys_CheckParm("-noconfig"))
 616                         return; // don't execute config.cfg
 617         }
 618
 619         f = (char *)FS_LoadFile (filename, tempmempool, false, NULL);
 620         if (!f)
 621         {
 622                 Con_Printf("couldn't exec %s\n",filename);
 623                 return;
 624         }
 625         Con_Printf("execing %s\n",filename);
 626
 627         // if executing default.cfg for the first time, lock the cvar defaults
 628         // it may seem backwards to insert this text BEFORE the default.cfg
 629         // but Cbuf_InsertText inserts before, so this actually ends up after it.
 630         if (isdefaultcfg)
 631                 Cbuf_InsertText(cmd, "\ncvar_lockdefaults\n");
 632
 633         Cbuf_InsertText (cmd, f);
 634         Mem_Free(f);
 635
 636         if (isdefaultcfg)
 637         {
 638                 // special defaults for specific games go here, these execute before default.cfg
 639                 // Nehahra pushable crates malfunction in some levels if this is on
 640                 // Nehahra NPC AI is confused by blowupfallenzombies
 641                 switch(gamemode)
 642                 {
 643                 case GAME_NORMAL:
 644                         Cbuf_InsertText(cmd, "\n"
 645 "sv_gameplayfix_blowupfallenzombies 0\n"
 646 "sv_gameplayfix_findradiusdistancetobox 0\n"
 647 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 648 "sv_gameplayfix_slidemoveprojectiles 0\n"
 649 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 650 "sv_gameplayfix_setmodelrealbox 0\n"
 651 "sv_gameplayfix_droptofloorstartsolid 0\n"
 652 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 653 "sv_gameplayfix_noairborncorpse 0\n"
 654 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 655 "sv_gameplayfix_easierwaterjump 0\n"
 656 "sv_gameplayfix_delayprojectiles 0\n"
 657 "sv_gameplayfix_multiplethinksperframe 0\n"
 658 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 659 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 660 "sv_gameplayfix_swiminbmodels 0\n"
 661 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 662 "sys_ticrate 0.01388889\n"
 663 "r_shadow_gloss 1\n"
 664 "r_shadow_bumpscale_basetexture 0\n"
 665 "csqc_polygons_defaultmaterial_nocullface 0\n"
 666                                 );
 667                         break;
 668                 case GAME_NEHAHRA:
 669                         Cbuf_InsertText(cmd, "\n"
 670 "sv_gameplayfix_blowupfallenzombies 0\n"
 671 "sv_gameplayfix_findradiusdistancetobox 0\n"
 672 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 673 "sv_gameplayfix_slidemoveprojectiles 0\n"
 674 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 675 "sv_gameplayfix_setmodelrealbox 0\n"
 676 "sv_gameplayfix_droptofloorstartsolid 0\n"
 677 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 678 "sv_gameplayfix_noairborncorpse 0\n"
 679 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 680 "sv_gameplayfix_easierwaterjump 0\n"
 681 "sv_gameplayfix_delayprojectiles 0\n"
 682 "sv_gameplayfix_multiplethinksperframe 0\n"
 683 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 684 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 685 "sv_gameplayfix_swiminbmodels 0\n"
 686 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 687 "sys_ticrate 0.01388889\n"
 688 "r_shadow_gloss 1\n"
 689 "r_shadow_bumpscale_basetexture 0\n"
 690 "csqc_polygons_defaultmaterial_nocullface 0\n"
 691                                 );
 692                         break;
 693                 // 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.
 694                 // 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
 695                 // hipnotic mission pack has issues in their proximity mine sticking code, which causes them to bounce off.
 696                 case GAME_HIPNOTIC:
 697                 case GAME_QUOTH:
 698                         Cbuf_InsertText(cmd, "\n"
 699 "sv_gameplayfix_blowupfallenzombies 0\n"
 700 "sv_gameplayfix_findradiusdistancetobox 0\n"
 701 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 702 "sv_gameplayfix_slidemoveprojectiles 0\n"
 703 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 704 "sv_gameplayfix_setmodelrealbox 0\n"
 705 "sv_gameplayfix_droptofloorstartsolid 0\n"
 706 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 707 "sv_gameplayfix_noairborncorpse 0\n"
 708 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 709 "sv_gameplayfix_easierwaterjump 0\n"
 710 "sv_gameplayfix_delayprojectiles 0\n"
 711 "sv_gameplayfix_multiplethinksperframe 0\n"
 712 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 713 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 714 "sv_gameplayfix_swiminbmodels 0\n"
 715 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 716 "sys_ticrate 0.02\n"
 717 "r_shadow_gloss 1\n"
 718 "r_shadow_bumpscale_basetexture 0\n"
 719 "csqc_polygons_defaultmaterial_nocullface 0\n"
 720                                 );
 721                         break;
 722                 // rogue mission pack has a guardian boss that does not wake up if findradius returns one of the entities around its spawn area
 723                 case GAME_ROGUE:
 724                         Cbuf_InsertText(cmd, "\n"
 725 "sv_gameplayfix_blowupfallenzombies 0\n"
 726 "sv_gameplayfix_findradiusdistancetobox 0\n"
 727 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 728 "sv_gameplayfix_slidemoveprojectiles 0\n"
 729 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 730 "sv_gameplayfix_setmodelrealbox 0\n"
 731 "sv_gameplayfix_droptofloorstartsolid 0\n"
 732 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 733 "sv_gameplayfix_noairborncorpse 0\n"
 734 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 735 "sv_gameplayfix_easierwaterjump 0\n"
 736 "sv_gameplayfix_delayprojectiles 0\n"
 737 "sv_gameplayfix_multiplethinksperframe 0\n"
 738 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 739 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 740 "sv_gameplayfix_swiminbmodels 0\n"
 741 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 742 "sys_ticrate 0.01388889\n"
 743 "r_shadow_gloss 1\n"
 744 "r_shadow_bumpscale_basetexture 0\n"
 745 "csqc_polygons_defaultmaterial_nocullface 0\n"
 746                                 );
 747                         break;
 748                 case GAME_TENEBRAE:
 749                         Cbuf_InsertText(cmd, "\n"
 750 "sv_gameplayfix_blowupfallenzombies 0\n"
 751 "sv_gameplayfix_findradiusdistancetobox 0\n"
 752 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 753 "sv_gameplayfix_slidemoveprojectiles 0\n"
 754 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 755 "sv_gameplayfix_setmodelrealbox 0\n"
 756 "sv_gameplayfix_droptofloorstartsolid 0\n"
 757 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 758 "sv_gameplayfix_noairborncorpse 0\n"
 759 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 760 "sv_gameplayfix_easierwaterjump 0\n"
 761 "sv_gameplayfix_delayprojectiles 0\n"
 762 "sv_gameplayfix_multiplethinksperframe 0\n"
 763 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 764 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 765 "sv_gameplayfix_swiminbmodels 0\n"
 766 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 767 "sys_ticrate 0.01388889\n"
 768 "r_shadow_gloss 2\n"
 769 "r_shadow_bumpscale_basetexture 4\n"
 770 "csqc_polygons_defaultmaterial_nocullface 0\n"
 771                                 );
 772                         break;
 773                 case GAME_NEXUIZ:
 774                         Cbuf_InsertText(cmd, "\n"
 775 "sv_gameplayfix_blowupfallenzombies 1\n"
 776 "sv_gameplayfix_findradiusdistancetobox 1\n"
 777 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 778 "sv_gameplayfix_slidemoveprojectiles 1\n"
 779 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 780 "sv_gameplayfix_setmodelrealbox 1\n"
 781 "sv_gameplayfix_droptofloorstartsolid 1\n"
 782 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 783 "sv_gameplayfix_noairborncorpse 1\n"
 784 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 785 "sv_gameplayfix_easierwaterjump 1\n"
 786 "sv_gameplayfix_delayprojectiles 1\n"
 787 "sv_gameplayfix_multiplethinksperframe 1\n"
 788 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 789 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 790 "sv_gameplayfix_swiminbmodels 1\n"
 791 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 792 "sys_ticrate 0.01388889\n"
 793 "sv_gameplayfix_q2airaccelerate 1\n"
 794 "sv_gameplayfix_stepmultipletimes 1\n"
 795 "csqc_polygons_defaultmaterial_nocullface 1\n"
 796 "con_chatsound_team_mask 13\n"
 797                                 );
 798                         break;
 799                 case GAME_XONOTIC:
 800                 case GAME_VORETOURNAMENT:
 801                         // 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
 802                         Cbuf_InsertText(cmd, "\n"
 803 "csqc_polygons_defaultmaterial_nocullface 1\n"
 804 "con_chatsound_team_mask 13\n"
 805 "sv_gameplayfix_customstats 1\n"
 806                                 );
 807                         break;
 808                 // Steel Storm: Burning Retribution csqc misinterprets CSQC_InputEvent if type is a value other than 0 or 1
 809                 case GAME_STEELSTORM:
 810                         Cbuf_InsertText(cmd, "\n"
 811 "sv_gameplayfix_blowupfallenzombies 1\n"
 812 "sv_gameplayfix_findradiusdistancetobox 1\n"
 813 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 814 "sv_gameplayfix_slidemoveprojectiles 1\n"
 815 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 816 "sv_gameplayfix_setmodelrealbox 1\n"
 817 "sv_gameplayfix_droptofloorstartsolid 1\n"
 818 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 819 "sv_gameplayfix_noairborncorpse 1\n"
 820 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 821 "sv_gameplayfix_easierwaterjump 1\n"
 822 "sv_gameplayfix_delayprojectiles 1\n"
 823 "sv_gameplayfix_multiplethinksperframe 1\n"
 824 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 825 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 826 "sv_gameplayfix_swiminbmodels 1\n"
 827 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 828 "sys_ticrate 0.01388889\n"
 829 "cl_csqc_generatemousemoveevents 0\n"
 830 "csqc_polygons_defaultmaterial_nocullface 1\n"
 831                                 );
 832                         break;
 833                 default:
 834                         Cbuf_InsertText(cmd, "\n"
 835 "sv_gameplayfix_blowupfallenzombies 1\n"
 836 "sv_gameplayfix_findradiusdistancetobox 1\n"
 837 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 838 "sv_gameplayfix_slidemoveprojectiles 1\n"
 839 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 840 "sv_gameplayfix_setmodelrealbox 1\n"
 841 "sv_gameplayfix_droptofloorstartsolid 1\n"
 842 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 843 "sv_gameplayfix_noairborncorpse 1\n"
 844 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 845 "sv_gameplayfix_easierwaterjump 1\n"
 846 "sv_gameplayfix_delayprojectiles 1\n"
 847 "sv_gameplayfix_multiplethinksperframe 1\n"
 848 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 849 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 850 "sv_gameplayfix_swiminbmodels 1\n"
 851 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 852 "sys_ticrate 0.01388889\n"
 853 "csqc_polygons_defaultmaterial_nocullface 0\n"
 854                                 );
 855                         break;
 856                 }
 857         }
 858 }
 859
 860 /*
 861 ===============
 862 Cmd_Exec_f
 863 ===============
 864 */
 865 static void Cmd_Exec_f (cmd_state_t *cmd)
 866 {
 867         fssearch_t *s;
 868         int i;
 869
 870         if (Cmd_Argc(cmd) != 2)
 871         {
 872                 Con_Print("exec <filename> : execute a script file\n");
 873                 return;
 874         }
 875
 876         s = FS_Search(Cmd_Argv(cmd, 1), true, true, NULL);
 877         if(!s || !s->numfilenames)
 878         {
 879                 Con_Printf("couldn't exec %s\n",Cmd_Argv(cmd, 1));
 880                 return;
 881         }
 882
 883         for(i = 0; i < s->numfilenames; ++i)
 884                 Cmd_Exec(cmd, s->filenames[i]);
 885
 886         FS_FreeSearch(s);
 887 }
 888
 889
 890 /*
 891 ===============
 892 Cmd_Echo_f
 893
 894 Just prints the rest of the line to the console
 895 ===============
 896 */
 897 static void Cmd_Echo_f (cmd_state_t *cmd)
 898 {
 899         int             i;
 900
 901         for (i=1 ; i<Cmd_Argc(cmd) ; i++)
 902                 Con_Printf("%s ",Cmd_Argv(cmd, i));
 903         Con_Print("\n");
 904 }
 905
 906 // DRESK - 5/14/06
 907 // Support Doom3-style Toggle Console Command
 908 /*
 909 ===============
 910 Cmd_Toggle_f
 911
 912 Toggles a specified console variable amongst the values specified (default is 0 and 1)
 913 ===============
 914 */
 915 static void Cmd_Toggle_f(cmd_state_t *cmd)
 916 {
 917         // Acquire Number of Arguments
 918         int nNumArgs = Cmd_Argc(cmd);
 919
 920         if(nNumArgs == 1)
 921                 // No Arguments Specified; Print Usage
 922                 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");
 923         else
 924         { // Correct Arguments Specified
 925                 // Acquire Potential CVar
 926                 cvar_t* cvCVar = Cvar_FindVar(cmd->cvars, Cmd_Argv(cmd, 1), cmd->cvars_flagsmask);
 927
 928                 if(cvCVar != NULL)
 929                 { // Valid CVar
 930                         if(nNumArgs == 2)
 931                         { // Default Usage
 932                                 if(cvCVar->integer)
 933                                         Cvar_SetValueQuick(cvCVar, 0);
 934                                 else
 935                                         Cvar_SetValueQuick(cvCVar, 1);
 936                         }
 937                         else
 938                         if(nNumArgs == 3)
 939                         { // 0 and Specified Usage
 940                                 if(cvCVar->integer == atoi(Cmd_Argv(cmd, 2) ) )
 941                                         // CVar is Specified Value; // Reset to 0
 942                                         Cvar_SetValueQuick(cvCVar, 0);
 943                                 else
 944                                 if(cvCVar->integer == 0)
 945                                         // CVar is 0; Specify Value
 946                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 947                                 else
 948                                         // CVar does not match; Reset to 0
 949                                         Cvar_SetValueQuick(cvCVar, 0);
 950                         }
 951                         else
 952                         { // Variable Values Specified
 953                                 int nCnt;
 954                                 int bFound = 0;
 955
 956                                 for(nCnt = 2; nCnt < nNumArgs; nCnt++)
 957                                 { // Cycle through Values
 958                                         if( strcmp(cvCVar->string, Cmd_Argv(cmd, nCnt) ) == 0)
 959                                         { // Current Value Located; Increment to Next
 960                                                 if( (nCnt + 1) == nNumArgs)
 961                                                         // Max Value Reached; Reset
 962                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 963                                                 else
 964                                                         // Next Value
 965                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, nCnt + 1) );
 966
 967                                                 // End Loop
 968                                                 nCnt = nNumArgs;
 969                                                 // Assign Found
 970                                                 bFound = 1;
 971                                         }
 972                                 }
 973                                 if(!bFound)
 974                                         // Value not Found; Reset to Original
 975                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 976                         }
 977
 978                 }
 979                 else
 980                 { // Invalid CVar
 981                         Con_Printf("ERROR : CVar '%s' not found\n", Cmd_Argv(cmd, 1) );
 982                 }
 983         }
 984 }
 985
 986 /*
 987 ===============
 988 Cmd_Alias_f
 989
 990 Creates a new command that executes a command string (possibly ; seperated)
 991 ===============
 992 */
 993 static void Cmd_Alias_f (cmd_state_t *cmd)
 994 {
 995         cmd_alias_t     *a;
 996         char            line[MAX_INPUTLINE];
 997         int                     i, c;
 998         const char              *s;
 999         size_t          alloclen;
1000
1001         if (Cmd_Argc(cmd) == 1)
1002         {
1003                 Con_Print("Current alias commands:\n");
1004                 for (a = cmd->userdefined->alias ; a ; a=a->next)
1005                         Con_Printf("%s : %s", a->name, a->value);
1006                 return;
1007         }
1008
1009         s = Cmd_Argv(cmd, 1);
1010         if (strlen(s) >= MAX_ALIAS_NAME)
1011         {
1012                 Con_Print("Alias name is too long\n");
1013                 return;
1014         }
1015
1016         // if the alias already exists, reuse it
1017         for (a = cmd->userdefined->alias ; a ; a=a->next)
1018         {
1019                 if (!strcmp(s, a->name))
1020                 {
1021                         Z_Free (a->value);
1022                         break;
1023                 }
1024         }
1025
1026         if (!a)
1027         {
1028                 cmd_alias_t *prev, *current;
1029
1030                 a = (cmd_alias_t *)Z_Malloc (sizeof(cmd_alias_t));
1031                 strlcpy (a->name, s, sizeof (a->name));
1032                 // insert it at the right alphanumeric position
1033                 for( prev = NULL, current = cmd->userdefined->alias ; current && strcmp( current->name, a->name ) < 0 ; prev = current, current = current->next )
1034                         ;
1035                 if( prev ) {
1036                         prev->next = a;
1037                 } else {
1038                         cmd->userdefined->alias = a;
1039                 }
1040                 a->next = current;
1041         }
1042
1043
1044 // copy the rest of the command line
1045         line[0] = 0;            // start out with a null string
1046         c = Cmd_Argc(cmd);
1047         for (i=2 ; i < c ; i++)
1048         {
1049                 if (i != 2)
1050                         strlcat (line, " ", sizeof (line));
1051                 strlcat (line, Cmd_Argv(cmd, i), sizeof (line));
1052         }
1053         strlcat (line, "\n", sizeof (line));
1054
1055         alloclen = strlen (line) + 1;
1056         if(alloclen >= 2)
1057                 line[alloclen - 2] = '\n'; // to make sure a newline is appended even if too long
1058         a->value = (char *)Z_Malloc (alloclen);
1059         memcpy (a->value, line, alloclen);
1060 }
1061
1062 /*
1063 ===============
1064 Cmd_UnAlias_f
1065
1066 Remove existing aliases.
1067 ===============
1068 */
1069 static void Cmd_UnAlias_f (cmd_state_t *cmd)
1070 {
1071         cmd_alias_t     *a, *p;
1072         int i;
1073         const char *s;
1074
1075         if(Cmd_Argc(cmd) == 1)
1076         {
1077                 Con_Print("unalias: Usage: unalias alias1 [alias2 ...]\n");
1078                 return;
1079         }
1080
1081         for(i = 1; i < Cmd_Argc(cmd); ++i)
1082         {
1083                 s = Cmd_Argv(cmd, i);
1084                 p = NULL;
1085                 for(a = cmd->userdefined->alias; a; p = a, a = a->next)
1086                 {
1087                         if(!strcmp(s, a->name))
1088                         {
1089                                 if (a->initstate) // we can not remove init aliases
1090                                         continue;
1091                                 if(a == cmd->userdefined->alias)
1092                                         cmd->userdefined->alias = a->next;
1093                                 if(p)
1094                                         p->next = a->next;
1095                                 Z_Free(a->value);
1096                                 Z_Free(a);
1097                                 break;
1098                         }
1099                 }
1100                 if(!a)
1101                         Con_Printf("unalias: %s alias not found\n", s);
1102         }
1103 }
1104
1105 /*
1106 =============================================================================
1107
1108                                         COMMAND EXECUTION
1109
1110 =============================================================================
1111 */
1112
1113 static const char *Cmd_GetDirectCvarValue(cmd_state_t *cmd, const char *varname, cmd_alias_t *alias, qbool *is_multiple)
1114 {
1115         cvar_t *cvar;
1116         long argno;
1117         char *endptr;
1118         static char vabuf[1024]; // cmd_mutex
1119
1120         if(is_multiple)
1121                 *is_multiple = false;
1122
1123         if(!varname || !*varname)
1124                 return NULL;
1125
1126         if(alias)
1127         {
1128                 if(!strcmp(varname, "*"))
1129                 {
1130                         if(is_multiple)
1131                                 *is_multiple = true;
1132                         return Cmd_Args(cmd);
1133                 }
1134                 else if(!strcmp(varname, "#"))
1135                 {
1136                         return va(vabuf, sizeof(vabuf), "%d", Cmd_Argc(cmd));
1137                 }
1138                 else if(varname[strlen(varname) - 1] == '-')
1139                 {
1140                         argno = strtol(varname, &endptr, 10);
1141                         if(endptr == varname + strlen(varname) - 1)
1142                         {
1143                                 // whole string is a number, apart from the -
1144                                 const char *p = Cmd_Args(cmd);
1145                                 for(; argno > 1; --argno)
1146                                         if(!COM_ParseToken_Console(&p))
1147                                                 break;
1148                                 if(p)
1149                                 {
1150                                         if(is_multiple)
1151                                                 *is_multiple = true;
1152
1153                                         // kill pre-argument whitespace
1154                                         for (;*p && ISWHITESPACE(*p);p++)
1155                                                 ;
1156
1157                                         return p;
1158                                 }
1159                         }
1160                 }
1161                 else
1162                 {
1163                         argno = strtol(varname, &endptr, 10);
1164                         if(*endptr == 0)
1165                         {
1166                                 // whole string is a number
1167                                 // NOTE: we already made sure we don't have an empty cvar name!
1168                                 if(argno >= 0 && argno < Cmd_Argc(cmd))
1169                                         return Cmd_Argv(cmd, argno);
1170                         }
1171                 }
1172         }
1173
1174         if((cvar = Cvar_FindVar(cmd->cvars, varname, cmd->cvars_flagsmask)) && !(cvar->flags & CF_PRIVATE))
1175                 return cvar->string;
1176
1177         return NULL;
1178 }
1179
1180 qbool Cmd_QuoteString(char *out, size_t outlen, const char *in, const char *quoteset, qbool putquotes)
1181 {
1182         qbool quote_quot = !!strchr(quoteset, '"');
1183         qbool quote_backslash = !!strchr(quoteset, '\\');
1184         qbool quote_dollar = !!strchr(quoteset, '$');
1185
1186         if(putquotes)
1187         {
1188                 if(outlen <= 2)
1189                 {
1190                         *out++ = 0;
1191                         return false;
1192                 }
1193                 *out++ = '"'; --outlen;
1194                 --outlen;
1195         }
1196
1197         while(*in)
1198         {
1199                 if(*in == '"' && quote_quot)
1200                 {
1201                         if(outlen <= 2)
1202                                 goto fail;
1203                         *out++ = '\\'; --outlen;
1204                         *out++ = '"'; --outlen;
1205                 }
1206                 else if(*in == '\\' && quote_backslash)
1207                 {
1208                         if(outlen <= 2)
1209                                 goto fail;
1210                         *out++ = '\\'; --outlen;
1211                         *out++ = '\\'; --outlen;
1212                 }
1213                 else if(*in == '$' && quote_dollar)
1214                 {
1215                         if(outlen <= 2)
1216                                 goto fail;
1217                         *out++ = '$'; --outlen;
1218                         *out++ = '$'; --outlen;
1219                 }
1220                 else
1221                 {
1222                         if(outlen <= 1)
1223                                 goto fail;
1224                         *out++ = *in; --outlen;
1225                 }
1226                 ++in;
1227         }
1228         if(putquotes)
1229                 *out++ = '"';
1230         *out++ = 0;
1231         return true;
1232 fail:
1233         if(putquotes)
1234                 *out++ = '"';
1235         *out++ = 0;
1236         return false;
1237 }
1238
1239 static const char *Cmd_GetCvarValue(cmd_state_t *cmd, const char *var, size_t varlen, cmd_alias_t *alias)
1240 {
1241         static char varname[MAX_INPUTLINE]; // cmd_mutex
1242         static char varval[MAX_INPUTLINE]; // cmd_mutex
1243         const char *varstr = NULL;
1244         char *varfunc;
1245         qbool required = false;
1246         qbool optional = false;
1247         static char asis[] = "asis"; // just to suppress const char warnings
1248
1249         if(varlen >= MAX_INPUTLINE)
1250                 varlen = MAX_INPUTLINE - 1;
1251         memcpy(varname, var, varlen);
1252         varname[varlen] = 0;
1253         varfunc = strchr(varname, ' ');
1254
1255         if(varfunc)
1256         {
1257                 *varfunc = 0;
1258                 ++varfunc;
1259         }
1260
1261         if(*var == 0)
1262         {
1263                 // empty cvar name?
1264                 if(alias)
1265                         Con_Printf(CON_WARN "Warning: Could not expand $ in alias %s\n", alias->name);
1266                 else
1267                         Con_Printf(CON_WARN "Warning: Could not expand $\n");
1268                 return "$";
1269         }
1270
1271         if(varfunc)
1272         {
1273                 char *p;
1274                 // ? means optional
1275                 while((p = strchr(varfunc, '?')))
1276                 {
1277                         optional = true;
1278                         memmove(p, p+1, strlen(p)); // with final NUL
1279                 }
1280                 // ! means required
1281                 while((p = strchr(varfunc, '!')))
1282                 {
1283                         required = true;
1284                         memmove(p, p+1, strlen(p)); // with final NUL
1285                 }
1286                 // kill spaces
1287                 while((p = strchr(varfunc, ' ')))
1288                 {
1289                         memmove(p, p+1, strlen(p)); // with final NUL
1290                 }
1291                 // if no function is left, NULL it
1292                 if(!*varfunc)
1293                         varfunc = NULL;
1294         }
1295
1296         if(varname[0] == '$')
1297                 varstr = Cmd_GetDirectCvarValue(cmd, Cmd_GetDirectCvarValue(cmd, varname + 1, alias, NULL), alias, NULL);
1298         else
1299         {
1300                 qbool is_multiple = false;
1301                 // Exception: $* and $n- don't use the quoted form by default
1302                 varstr = Cmd_GetDirectCvarValue(cmd, varname, alias, &is_multiple);
1303                 if(is_multiple)
1304                         if(!varfunc)
1305                                 varfunc = asis;
1306         }
1307
1308         if(!varstr)
1309         {
1310                 if(required)
1311                 {
1312                         if(alias)
1313                                 Con_Printf(CON_ERROR "Error: Could not expand $%s in alias %s\n", varname, alias->name);
1314                         else
1315                                 Con_Printf(CON_ERROR "Error: Could not expand $%s\n", varname);
1316                         return NULL;
1317                 }
1318                 else if(optional)
1319                 {
1320                         return "";
1321                 }
1322                 else
1323                 {
1324                         if(alias)
1325                                 Con_Printf(CON_WARN "Warning: Could not expand $%s in alias %s\n", varname, alias->name);
1326                         else
1327                                 Con_Printf(CON_WARN "Warning: Could not expand $%s\n", varname);
1328                         dpsnprintf(varval, sizeof(varval), "$%s", varname);
1329                         return varval;
1330                 }
1331         }
1332
1333         if(!varfunc || !strcmp(varfunc, "q")) // note: quoted form is default, use "asis" to override!
1334         {
1335                 // quote it so it can be used inside double quotes
1336                 // we just need to replace " by \", and of course, double backslashes
1337                 Cmd_QuoteString(varval, sizeof(varval), varstr, "\"\\", false);
1338                 return varval;
1339         }
1340         else if(!strcmp(varfunc, "asis"))
1341         {
1342                 return varstr;
1343         }
1344         else
1345                 Con_Printf("Unknown variable function %s\n", varfunc);
1346
1347         return varstr;
1348 }
1349
1350 /*
1351 Cmd_PreprocessString
1352
1353 Preprocesses strings and replaces $*, $param#, $cvar accordingly. Also strips comments.
1354 */
1355 static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias ) {
1356         const char *in;
1357         size_t eat, varlen;
1358         unsigned outlen;
1359         const char *val;
1360
1361         // don't crash if there's no room in the outtext buffer
1362         if( maxoutlen == 0 ) {
1363                 return false;
1364         }
1365         maxoutlen--; // because of \0
1366
1367         in = intext;
1368         outlen = 0;
1369
1370         while( *in && outlen < maxoutlen ) {
1371                 if( *in == '$' ) {
1372                         // this is some kind of expansion, see what comes after the $
1373                         in++;
1374
1375                         // The console does the following preprocessing:
1376                         //
1377                         // - $$ is transformed to a single dollar sign.
1378                         // - $var or ${var} are expanded to the contents of the named cvar,
1379                         //   with quotation marks and backslashes quoted so it can safely
1380                         //   be used inside quotation marks (and it should always be used
1381                         //   that way)
1382                         // - ${var asis} inserts the cvar value as is, without doing this
1383                         //   quoting
1384                         // - ${var ?} silently expands to the empty string if
1385                         //   $var does not exist
1386                         // - ${var !} fails expansion and executes nothing if
1387                         //   $var does not exist
1388                         // - prefix the cvar name with a dollar sign to do indirection;
1389                         //   for example, if $x has the value timelimit, ${$x} will return
1390                         //   the value of $timelimit
1391                         // - when expanding an alias, the special variable name $* refers
1392                         //   to all alias parameters, and a number refers to that numbered
1393                         //   alias parameter, where the name of the alias is $0, the first
1394                         //   parameter is $1 and so on; as a special case, $* inserts all
1395                         //   parameters, without extra quoting, so one can use $* to just
1396                         //   pass all parameters around. All parameters starting from $n
1397                         //   can be referred to as $n- (so $* is equivalent to $1-).
1398                         // - ${* q} and ${n- q} force quoting anyway
1399                         //
1400                         // Note: when expanding an alias, cvar expansion is done in the SAME step
1401                         // as alias expansion so that alias parameters or cvar values containing
1402                         // dollar signs have no unwanted bad side effects. However, this needs to
1403                         // be accounted for when writing complex aliases. For example,
1404                         //   alias foo "set x NEW; echo $x"
1405                         // actually expands to
1406                         //   "set x NEW; echo OLD"
1407                         // and will print OLD! To work around this, use a second alias:
1408                         //   alias foo "set x NEW; foo2"
1409                         //   alias foo2 "echo $x"
1410                         //
1411                         // Also note: lines starting with alias are exempt from cvar expansion.
1412                         // If you want cvar expansion, write "alias" instead:
1413                         //
1414                         //   set x 1
1415                         //   alias foo "echo $x"
1416                         //   "alias" bar "echo $x"
1417                         //   set x 2
1418                         //
1419                         // foo will print 2, because the variable $x will be expanded when the alias
1420                         // gets expanded. bar will print 1, because the variable $x was expanded
1421                         // at definition time. foo can be equivalently defined as
1422                         //
1423                         //   "alias" foo "echo $$x"
1424                         //
1425                         // because at definition time, $$ will get replaced to a single $.
1426
1427                         if( *in == '$' ) {
1428                                 val = "$";
1429                                 eat = 1;
1430                         } else if(*in == '{') {
1431                                 varlen = strcspn(in + 1, "}");
1432                                 if(in[varlen + 1] == '}')
1433                                 {
1434                                         val = Cmd_GetCvarValue(cmd, in + 1, varlen, alias);
1435                                         if(!val)
1436                                                 return false;
1437                                         eat = varlen + 2;
1438                                 }
1439                                 else
1440                                 {
1441                                         // ran out of data?
1442                                         val = NULL;
1443                                         eat = varlen + 1;
1444                                 }
1445                         } else {
1446                                 varlen = strspn(in, "#*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-");
1447                                 val = Cmd_GetCvarValue(cmd, in, varlen, alias);
1448                                 if(!val)
1449                                         return false;
1450                                 eat = varlen;
1451                         }
1452                         if(val)
1453                         {
1454                                 // insert the cvar value
1455                                 while(*val && outlen < maxoutlen)
1456                                         outtext[outlen++] = *val++;
1457                                 in += eat;
1458                         }
1459                         else
1460                         {
1461                                 // copy the unexpanded text
1462                                 outtext[outlen++] = '$';
1463                                 while(eat && outlen < maxoutlen)
1464                                 {
1465                                         outtext[outlen++] = *in++;
1466                                         --eat;
1467                                 }
1468                         }
1469                 }
1470                 else
1471                         outtext[outlen++] = *in++;
1472         }
1473         outtext[outlen] = 0;
1474         return true;
1475 }
1476
1477 /*
1478 ============
1479 Cmd_ExecuteAlias
1480
1481 Called for aliases and fills in the alias into the cbuffer
1482 ============
1483 */
1484 static void Cmd_ExecuteAlias (cmd_state_t *cmd, cmd_alias_t *alias)
1485 {
1486         static char buffer[ MAX_INPUTLINE ]; // cmd_mutex
1487         static char buffer2[ MAX_INPUTLINE ]; // cmd_mutex
1488         qbool ret = Cmd_PreprocessString( cmd, alias->value, buffer, sizeof(buffer) - 2, alias );
1489         if(!ret)
1490                 return;
1491         // insert at start of command buffer, so that aliases execute in order
1492         // (fixes bug introduced by Black on 20050705)
1493
1494         // Note: Cbuf_PreprocessString will be called on this string AGAIN! So we
1495         // have to make sure that no second variable expansion takes place, otherwise
1496         // alias parameters containing dollar signs can have bad effects.
1497         Cmd_QuoteString(buffer2, sizeof(buffer2), buffer, "$", false);
1498         Cbuf_InsertText(cmd, buffer2);
1499 }
1500
1501 /*
1502 ========
1503 Cmd_List
1504
1505         CmdList Added by EvilTypeGuy eviltypeguy@qeradiant.com
1506         Thanks to Matthias "Maddes" Buecher, http://www.inside3d.com/qip/
1507
1508 ========
1509 */
1510 static void Cmd_List_f (cmd_state_t *cmd)
1511 {
1512         cmd_function_t *func;
1513         const char *partial;
1514         size_t len;
1515         int count;
1516         qbool ispattern;
1517
1518         if (Cmd_Argc(cmd) > 1)
1519         {
1520                 partial = Cmd_Argv(cmd, 1);
1521                 len = strlen(partial);
1522                 ispattern = (strchr(partial, '*') || strchr(partial, '?'));
1523         }
1524         else
1525         {
1526                 partial = NULL;
1527                 len = 0;
1528                 ispattern = false;
1529         }
1530
1531         count = 0;
1532         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1533         {
1534                 if (partial && (ispattern ? !matchpattern_with_separator(func->name, partial, false, "", false) : strncmp(partial, func->name, len)))
1535                         continue;
1536                 Con_Printf("%s : %s\n", func->name, func->description);
1537                 count++;
1538         }
1539         for (func = cmd->engine_functions; func; func = func->next)
1540         {
1541                 if (partial && (ispattern ? !matchpattern_with_separator(func->name, partial, false, "", false) : strncmp(partial, func->name, len)))
1542                         continue;
1543                 Con_Printf("%s : %s\n", func->name, func->description);
1544                 count++;
1545         }
1546
1547         if (len)
1548         {
1549                 if(ispattern)
1550                         Con_Printf("%i Command%s matching \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
1551                 else
1552                         Con_Printf("%i Command%s beginning with \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
1553         }
1554         else
1555                 Con_Printf("%i Command%s\n\n", count, (count > 1) ? "s" : "");
1556 }
1557
1558 static void Cmd_Apropos_f(cmd_state_t *cmd)
1559 {
1560         cmd_function_t *func;
1561         cvar_t *cvar;
1562         cmd_alias_t *alias;
1563         const char *partial;
1564         int count;
1565         qbool ispattern;
1566         char vabuf[1024];
1567
1568         if (Cmd_Argc(cmd) > 1)
1569                 partial = Cmd_Args(cmd);
1570         else
1571         {
1572                 Con_Printf("usage: %s <string>\n",Cmd_Argv(cmd, 0));
1573                 return;
1574         }
1575
1576         ispattern = partial && (strchr(partial, '*') || strchr(partial, '?'));
1577         if(!ispattern)
1578                 partial = va(vabuf, sizeof(vabuf), "*%s*", partial);
1579
1580         count = 0;
1581         for (cvar = cmd->cvars->vars; cvar; cvar = cvar->next)
1582         {
1583                 if (matchpattern_with_separator(cvar->name, partial, true, "", false) ||
1584                     matchpattern_with_separator(cvar->description, partial, true, "", false))
1585                 {
1586                         Con_Printf ("cvar ");
1587                         Cvar_PrintHelp(cvar, cvar->name, true);
1588                         count++;
1589                 }
1590                 for (int i = 0; i < cvar->aliasindex; i++)
1591                 {
1592                         if (matchpattern_with_separator(cvar->aliases[i], partial, true, "", false))
1593                         {
1594                                 Con_Printf ("cvar ");
1595                                 Cvar_PrintHelp(cvar, cvar->aliases[i], true);
1596                                 count++;
1597                         }
1598                 }
1599         }
1600         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1601         {
1602                 if (!matchpattern_with_separator(func->name, partial, true, "", false))
1603                         if (!matchpattern_with_separator(func->description, partial, true, "", false))
1604                                 continue;
1605                 Con_Printf("command ^2%s^7: %s\n", func->name, func->description);
1606                 count++;
1607         }
1608         for (func = cmd->engine_functions; func; func = func->next)
1609         {
1610                 if (!matchpattern_with_separator(func->name, partial, true, "", false))
1611                 if (!matchpattern_with_separator(func->description, partial, true, "", false))
1612                         continue;
1613                 Con_Printf("command ^2%s^7: %s\n", func->name, func->description);
1614                 count++;
1615         }
1616         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
1617         {
1618                 // procede here a bit differently as an alias value always got a final \n
1619                 if (!matchpattern_with_separator(alias->name, partial, true, "", false))
1620                 if (!matchpattern_with_separator(alias->value, partial, true, "\n", false)) // when \n is as separator wildcards don't match it
1621                         continue;
1622                 Con_Printf("alias ^5%s^7: %s", alias->name, alias->value); // do not print an extra \n
1623                 count++;
1624         }
1625         Con_Printf("%i result%s\n\n", count, (count > 1) ? "s" : "");
1626 }
1627
1628 static cmd_state_t *Cmd_AddInterpreter(cmd_buf_t *cbuf, cvar_state_t *cvars, int cvars_flagsmask, int cmds_flagsmask, cmd_userdefined_t *userdefined)
1629 {
1630         cmd_state_t *cmd = (cmd_state_t *)Mem_Alloc(tempmempool, sizeof(cmd_state_t));
1631
1632         cmd->mempool = Mem_AllocPool("commands", 0, NULL);
1633         // space for commands and script files
1634         cmd->cbuf = cbuf;
1635         cmd->null_string = "";
1636
1637         cmd->cvars = cvars;
1638         cmd->cvars_flagsmask = cvars_flagsmask;
1639         cmd->cmd_flags = cmds_flagsmask;
1640         cmd->userdefined = userdefined;
1641
1642         return cmd;
1643 }
1644
1645 /*
1646 ============
1647 Cmd_Init
1648 ============
1649 */
1650 void Cmd_Init(void)
1651 {
1652         cmd_buf_t *cbuf;
1653         cbuf_mempool = Mem_AllocPool("Command buffer", 0, NULL);
1654         cbuf = (cmd_buf_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_buf_t));
1655         cbuf->maxsize = 655360;
1656         cbuf->lock = Thread_CreateMutex();
1657         cbuf->wait = false;
1658         host.cbuf = cbuf;
1659
1660         cbuf->start.prev = cbuf->start.next = &(cbuf->start);
1661         cbuf->deferred.prev = cbuf->deferred.next = &(cbuf->deferred);
1662         cbuf->free.prev = cbuf->free.next = &(cbuf->free);
1663
1664         // FIXME: Get rid of cmd_iter_all eventually. This is just a hack to reduce the amount of work to make the interpreters dynamic.
1665         cmd_iter_all = (cmd_iter_t *)Mem_Alloc(tempmempool, sizeof(cmd_iter_t) * 4);
1666
1667         // client console can see server cvars because the user may start a server
1668         cmd_iter_all[0].cmd = cmd_client = Cmd_AddInterpreter(cbuf, &cvars_all, CF_CLIENT | CF_SERVER, CF_CLIENT | CF_CLIENT_FROM_SERVER, &cmd_userdefined_all);
1669         cmd_client->Handle = Cmd_CL_Callback;
1670         cmd_client->NotFound = NULL;
1671
1672         // dedicated server console can only see server cvars, there is no client
1673         cmd_iter_all[1].cmd = cmd_server = Cmd_AddInterpreter(cbuf, &cvars_all, CF_SERVER, CF_SERVER, &cmd_userdefined_all);
1674         cmd_server->Handle = Cmd_SV_Callback;
1675         cmd_server->NotFound = NULL;
1676
1677         // server commands received from clients have no reason to access cvars, cvar expansion seems perilous.
1678         cmd_iter_all[2].cmd = cmd_serverfromclient = Cmd_AddInterpreter(cbuf, &cvars_null, 0, CF_SERVER_FROM_CLIENT | CF_USERINFO, &cmd_userdefined_null);
1679         cmd_serverfromclient->Handle = Cmd_SV_Callback;
1680         cmd_serverfromclient->NotFound = Cmd_SV_NotFound;
1681
1682         cmd_iter_all[3].cmd = NULL;
1683 //
1684 // register our commands
1685 //
1686         // client-only commands
1687         Cmd_AddCommand(CF_SHARED, "wait", Cmd_Wait_f, "make script execution wait for next rendered frame");
1688         Cmd_AddCommand(CF_CLIENT, "cprint", Cmd_Centerprint_f, "print something at the screen center");
1689
1690         // maintenance commands used for upkeep of cvars and saved configs
1691         Cmd_AddCommand(CF_SHARED, "stuffcmds", Cmd_StuffCmds_f, "execute commandline parameters (must be present in quake.rc script)");
1692         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");
1693         Cmd_AddCommand(CF_SHARED, "cvar_resettodefaults_all", Cvar_ResetToDefaults_All_f, "sets all cvars to their locked default values");
1694         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)");
1695         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)");
1696
1697         // general console commands used in multiple environments
1698         Cmd_AddCommand(CF_SHARED, "exec", Cmd_Exec_f, "execute a script file");
1699         Cmd_AddCommand(CF_SHARED, "echo",Cmd_Echo_f, "print a message to the console (useful in scripts)");
1700         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");
1701         Cmd_AddCommand(CF_SHARED, "unalias",Cmd_UnAlias_f, "remove an alias");
1702         Cmd_AddCommand(CF_SHARED, "set", Cvar_Set_f, "create or change the value of a console variable");
1703         Cmd_AddCommand(CF_SHARED, "seta", Cvar_SetA_f, "create or change the value of a console variable that will be saved to config.cfg");
1704         Cmd_AddCommand(CF_SHARED, "unset", Cvar_Del_f, "delete a cvar (does not work for static ones like _cl_name, or read-only ones)");
1705
1706 #ifdef FILLALLCVARSWITHRUBBISH
1707         Cmd_AddCommand(CF_SHARED, "fillallcvarswithrubbish", Cvar_FillAll_f, "fill all cvars with a specified number of characters to provoke buffer overruns");
1708 #endif /* FILLALLCVARSWITHRUBBISH */
1709
1710         // 2000-01-09 CmdList, CvarList commands By Matthias "Maddes" Buecher
1711         // Added/Modified by EvilTypeGuy eviltypeguy@qeradiant.com
1712         Cmd_AddCommand(CF_SHARED, "cmdlist", Cmd_List_f, "lists all console commands beginning with the specified prefix or matching the specified wildcard pattern");
1713         Cmd_AddCommand(CF_SHARED, "cvarlist", Cvar_List_f, "lists all console variables beginning with the specified prefix or matching the specified wildcard pattern");
1714         Cmd_AddCommand(CF_SHARED, "apropos", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");
1715         Cmd_AddCommand(CF_SHARED, "find", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");
1716
1717         Cmd_AddCommand(CF_SHARED, "defer", Cmd_Defer_f, "execute a command in the future");
1718
1719         // DRESK - 5/14/06
1720         // Support Doom3-style Toggle Command
1721         Cmd_AddCommand(CF_SHARED | CF_CLIENT_FROM_SERVER, "toggle", Cmd_Toggle_f, "toggles a console variable's values (use for more info)");
1722 }
1723
1724 /*
1725 ============
1726 Cmd_Shutdown
1727 ============
1728 */
1729 void Cmd_Shutdown(void)
1730 {
1731         cmd_iter_t *cmd_iter;
1732         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
1733         {
1734                 cmd_state_t *cmd = cmd_iter->cmd;
1735
1736                 if (cmd->cbuf->lock)
1737                 {
1738                         // we usually have this locked when we get here from Host_Quit_f
1739                         Cbuf_Unlock(cmd->cbuf);
1740                 }
1741
1742                 Mem_FreePool(&cmd->mempool);
1743         }
1744 }
1745
1746 /*
1747 ============
1748 Cmd_Argc
1749 ============
1750 */
1751 int             Cmd_Argc (cmd_state_t *cmd)
1752 {
1753         return cmd->argc;
1754 }
1755
1756 /*
1757 ============
1758 Cmd_Argv
1759 ============
1760 */
1761 const char *Cmd_Argv(cmd_state_t *cmd, int arg)
1762 {
1763         if (arg >= cmd->argc )
1764                 return cmd->null_string;
1765         return cmd->argv[arg];
1766 }
1767
1768 /*
1769 ============
1770 Cmd_Args
1771 ============
1772 */
1773 const char *Cmd_Args (cmd_state_t *cmd)
1774 {
1775         return cmd->args;
1776 }
1777
1778 /*
1779 ============
1780 Cmd_TokenizeString
1781
1782 Parses the given string into command line tokens.
1783 ============
1784 */
1785 // AK: This function should only be called from ExcuteString because the current design is a bit of an hack
1786 static void Cmd_TokenizeString (cmd_state_t *cmd, const char *text)
1787 {
1788         int l;
1789
1790         cmd->argc = 0;
1791         cmd->args = NULL;
1792         cmd->cmdline = NULL;
1793
1794         while (1)
1795         {
1796                 // skip whitespace up to a /n
1797                 while (*text && ISWHITESPACE(*text) && *text != '\r' && *text != '\n')
1798                         text++;
1799
1800                 // line endings:
1801                 // UNIX: \n
1802                 // Mac: \r
1803                 // Windows: \r\n
1804                 if (*text == '\n' || *text == '\r')
1805                 {
1806                         // a newline separates commands in the buffer
1807                         if (*text == '\r' && text[1] == '\n')
1808                                 text++;
1809                         text++;
1810                         break;
1811                 }
1812
1813                 if (!*text)
1814                         return;
1815
1816                 if(!cmd->argc)
1817                         cmd->cmdline = text;
1818                 if (cmd->argc == 1)
1819                         cmd->args = text;
1820
1821                 if (!COM_ParseToken_Console(&text))
1822                         return;
1823
1824                 if (cmd->argc < MAX_ARGS)
1825                 {
1826                         l = (int)strlen(com_token) + 1;
1827                         if (cmd->cbuf->tokenizebufferpos + l > CMD_TOKENIZELENGTH)
1828                         {
1829                                 Con_Printf("Cmd_TokenizeString: ran out of %i character buffer space for command arguments\n", CMD_TOKENIZELENGTH);
1830                                 break;
1831                         }
1832                         memcpy (cmd->cbuf->tokenizebuffer + cmd->cbuf->tokenizebufferpos, com_token, l);
1833                         cmd->argv[cmd->argc] = cmd->cbuf->tokenizebuffer + cmd->cbuf->tokenizebufferpos;
1834                         cmd->cbuf->tokenizebufferpos += l;
1835                         cmd->argc++;
1836                 }
1837         }
1838 }
1839
1840
1841 /*
1842 ============
1843 Cmd_AddCommand
1844 ============
1845 */
1846 void Cmd_AddCommand(int flags, const char *cmd_name, xcommand_t function, const char *description)
1847 {
1848         cmd_function_t *func;
1849         cmd_function_t *prev, *current;
1850         cmd_state_t *cmd;
1851         int i;
1852
1853         for (i = 0; i < 3; i++)
1854         {
1855                 cmd = cmd_iter_all[i].cmd;
1856                 if (flags & cmd->cmd_flags)
1857                 {
1858                         // fail if the command is a variable name
1859                         if (Cvar_FindVar(cmd->cvars, cmd_name, ~0))
1860                         {
1861                                 Con_Printf("Cmd_AddCommand: %s already defined as a var\n", cmd_name);
1862                                 return;
1863                         }
1864
1865                         if (function)
1866                         {
1867                                 // fail if the command already exists in this interpreter
1868                                 for (func = cmd->engine_functions; func; func = func->next)
1869                                 {
1870                                         if (!strcmp(cmd_name, func->name))
1871                                         {
1872                                                 Con_Printf("Cmd_AddCommand: %s already defined\n", cmd_name);
1873                                                 continue;
1874                                         }
1875                                 }
1876
1877                                 func = (cmd_function_t *)Mem_Alloc(cmd->mempool, sizeof(cmd_function_t));
1878                                 func->flags = flags;
1879                                 func->name = cmd_name;
1880                                 func->function = function;
1881                                 func->description = description;
1882                                 func->next = cmd->engine_functions;
1883
1884                                 // insert it at the right alphanumeric position
1885                                 for (prev = NULL, current = cmd->engine_functions; current && strcmp(current->name, func->name) < 0; prev = current, current = current->next)
1886                                         ;
1887                                 if (prev) {
1888                                         prev->next = func;
1889                                 }
1890                                 else {
1891                                         cmd->engine_functions = func;
1892                                 }
1893                                 func->next = current;
1894                         }
1895                         else
1896                         {
1897                                 // mark qcfunc if the function already exists in the qc_functions list
1898                                 for (func = cmd->userdefined->qc_functions; func; func = func->next)
1899                                 {
1900                                         if (!strcmp(cmd_name, func->name))
1901                                         {
1902                                                 func->qcfunc = true; //[515]: csqc
1903                                                 continue;
1904                                         }
1905                                 }
1906
1907
1908                                 func = (cmd_function_t *)Mem_Alloc(cmd->mempool, sizeof(cmd_function_t));
1909                                 func->flags = flags;
1910                                 func->name = cmd_name;
1911                                 func->function = function;
1912                                 func->description = description;
1913                                 func->qcfunc = true; //[515]: csqc
1914                                 func->next = cmd->userdefined->qc_functions;
1915
1916                                 // insert it at the right alphanumeric position
1917                                 for (prev = NULL, current = cmd->userdefined->qc_functions; current && strcmp(current->name, func->name) < 0; prev = current, current = current->next)
1918                                         ;
1919                                 if (prev) {
1920                                         prev->next = func;
1921                                 }
1922                                 else {
1923                                         cmd->userdefined->qc_functions = func;
1924                                 }
1925                                 func->next = current;
1926                         }
1927                 }
1928         }
1929 }
1930
1931 /*
1932 ============
1933 Cmd_Exists
1934 ============
1935 */
1936 qbool Cmd_Exists (cmd_state_t *cmd, const char *cmd_name)
1937 {
1938         cmd_function_t  *func;
1939
1940         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1941                 if (!strcmp(cmd_name, func->name))
1942                         return true;
1943
1944         for (func=cmd->engine_functions ; func ; func=func->next)
1945                 if (!strcmp (cmd_name,func->name))
1946                         return true;
1947
1948         return false;
1949 }
1950
1951
1952 /*
1953 ============
1954 Cmd_CompleteCommand
1955 ============
1956 */
1957 const char *Cmd_CompleteCommand (cmd_state_t *cmd, const char *partial)
1958 {
1959         cmd_function_t *func;
1960         size_t len;
1961
1962         len = strlen(partial);
1963
1964         if (!len)
1965                 return NULL;
1966
1967 // check functions
1968         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1969                 if (!strncasecmp(partial, func->name, len))
1970                         return func->name;
1971
1972         for (func = cmd->engine_functions; func; func = func->next)
1973                 if (!strncasecmp(partial, func->name, len))
1974                         return func->name;
1975
1976         return NULL;
1977 }
1978
1979 /*
1980         Cmd_CompleteCountPossible
1981
1982         New function for tab-completion system
1983         Added by EvilTypeGuy
1984         Thanks to Fett erich@heintz.com
1985         Thanks to taniwha
1986
1987 */
1988 int Cmd_CompleteCountPossible (cmd_state_t *cmd, const char *partial)
1989 {
1990         cmd_function_t *func;
1991         size_t len;
1992         int h;
1993
1994         h = 0;
1995         len = strlen(partial);
1996
1997         if (!len)
1998                 return 0;
1999
2000         // Loop through the command list and count all partial matches
2001         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2002                 if (!strncasecmp(partial, func->name, len))
2003                         h++;
2004
2005         for (func = cmd->engine_functions; func; func = func->next)
2006                 if (!strncasecmp(partial, func->name, len))
2007                         h++;
2008
2009         return h;
2010 }
2011
2012 /*
2013         Cmd_CompleteBuildList
2014
2015         New function for tab-completion system
2016         Added by EvilTypeGuy
2017         Thanks to Fett erich@heintz.com
2018         Thanks to taniwha
2019
2020 */
2021 const char **Cmd_CompleteBuildList (cmd_state_t *cmd, const char *partial)
2022 {
2023         cmd_function_t *func;
2024         size_t len = 0;
2025         size_t bpos = 0;
2026         size_t sizeofbuf = (Cmd_CompleteCountPossible (cmd, partial) + 1) * sizeof (const char *);
2027         const char **buf;
2028
2029         len = strlen(partial);
2030         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
2031         // Loop through the functions lists and print all matches
2032         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2033                 if (!strncasecmp(partial, func->name, len))
2034                         buf[bpos++] = func->name;
2035         for (func = cmd->engine_functions; func; func = func->next)
2036                 if (!strncasecmp(partial, func->name, len))
2037                         buf[bpos++] = func->name;
2038
2039         buf[bpos] = NULL;
2040         return buf;
2041 }
2042
2043 // written by LadyHavoc
2044 void Cmd_CompleteCommandPrint (cmd_state_t *cmd, const char *partial)
2045 {
2046         cmd_function_t *func;
2047         size_t len = strlen(partial);
2048         // Loop through the command list and print all matches
2049         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2050                 if (!strncasecmp(partial, func->name, len))
2051                         Con_Printf("^2%s^7: %s\n", func->name, func->description);
2052         for (func = cmd->engine_functions; func; func = func->next)
2053                 if (!strncasecmp(partial, func->name, len))
2054                         Con_Printf("^2%s^7: %s\n", func->name, func->description);
2055 }
2056
2057 /*
2058         Cmd_CompleteAlias
2059
2060         New function for tab-completion system
2061         Added by EvilTypeGuy
2062         Thanks to Fett erich@heintz.com
2063         Thanks to taniwha
2064
2065 */
2066 const char *Cmd_CompleteAlias (cmd_state_t *cmd, const char *partial)
2067 {
2068         cmd_alias_t *alias;
2069         size_t len;
2070
2071         len = strlen(partial);
2072
2073         if (!len)
2074                 return NULL;
2075
2076         // Check functions
2077         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2078                 if (!strncasecmp(partial, alias->name, len))
2079                         return alias->name;
2080
2081         return NULL;
2082 }
2083
2084 // written by LadyHavoc
2085 void Cmd_CompleteAliasPrint (cmd_state_t *cmd, const char *partial)
2086 {
2087         cmd_alias_t *alias;
2088         size_t len = strlen(partial);
2089         // Loop through the alias list and print all matches
2090         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2091                 if (!strncasecmp(partial, alias->name, len))
2092                         Con_Printf("^5%s^7: %s", alias->name, alias->value);
2093 }
2094
2095
2096 /*
2097         Cmd_CompleteAliasCountPossible
2098
2099         New function for tab-completion system
2100         Added by EvilTypeGuy
2101         Thanks to Fett erich@heintz.com
2102         Thanks to taniwha
2103
2104 */
2105 int Cmd_CompleteAliasCountPossible (cmd_state_t *cmd, const char *partial)
2106 {
2107         cmd_alias_t     *alias;
2108         size_t          len;
2109         int                     h;
2110
2111         h = 0;
2112
2113         len = strlen(partial);
2114
2115         if (!len)
2116                 return 0;
2117
2118         // Loop through the command list and count all partial matches
2119         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2120                 if (!strncasecmp(partial, alias->name, len))
2121                         h++;
2122
2123         return h;
2124 }
2125
2126 /*
2127         Cmd_CompleteAliasBuildList
2128
2129         New function for tab-completion system
2130         Added by EvilTypeGuy
2131         Thanks to Fett erich@heintz.com
2132         Thanks to taniwha
2133
2134 */
2135 const char **Cmd_CompleteAliasBuildList (cmd_state_t *cmd, const char *partial)
2136 {
2137         cmd_alias_t *alias;
2138         size_t len = 0;
2139         size_t bpos = 0;
2140         size_t sizeofbuf = (Cmd_CompleteAliasCountPossible (cmd, partial) + 1) * sizeof (const char *);
2141         const char **buf;
2142
2143         len = strlen(partial);
2144         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
2145         // Loop through the alias list and print all matches
2146         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2147                 if (!strncasecmp(partial, alias->name, len))
2148                         buf[bpos++] = alias->name;
2149
2150         buf[bpos] = NULL;
2151         return buf;
2152 }
2153
2154 // TODO: Make this more generic?
2155 void Cmd_ClearCSQCCommands (cmd_state_t *cmd)
2156 {
2157         cmd_function_t *func;
2158         cmd_function_t **next = &cmd->userdefined->qc_functions;
2159
2160         while(*next)
2161         {
2162                 func = *next;
2163                 *next = func->next;
2164                 Z_Free(func);
2165         }
2166 }
2167
2168 extern cvar_t sv_cheats;
2169
2170 qbool Cmd_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2171 {
2172         if (func->function)
2173                 func->function(cmd);
2174         else
2175                 Con_Printf("Command \"%s\" can not be executed\n", Cmd_Argv(cmd, 0));
2176         return true;
2177 }
2178
2179 qbool Cmd_CL_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2180 {
2181         if(func->qcfunc && (func->flags & CF_CLIENT))
2182                 return CL_VM_ConsoleCommand(text);
2183         else if ((func->flags & CF_SERVER_FROM_CLIENT) && src == src_local)
2184         {
2185                 CL_ForwardToServer_f(cmd);
2186                 return true;
2187         }
2188         else
2189                 return Cmd_Callback(cmd, func, text, src);
2190 }
2191
2192 qbool Cmd_SV_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2193 {
2194         if(func->qcfunc && (func->flags & CF_SERVER))
2195                 return SV_VM_ConsoleCommand(text);
2196         else if (src == src_client)
2197         {
2198                 if((func->flags & CF_CHEAT) && !sv_cheats.integer)
2199                         SV_ClientPrintf("No cheats allowed. The server must have sv_cheats set to 1\n");
2200                 else
2201                         func->function(cmd);
2202                 return true;
2203         }
2204         else
2205                 return Cmd_Callback(cmd, func, text, src);
2206 }
2207
2208 qbool Cmd_SV_NotFound(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2209 {
2210         if (cmd->source == src_client)
2211         {
2212                 Con_Printf("Client \"%s\" tried to execute \"%s\"\n", host_client->name, text);
2213                 return true;
2214         }
2215         return false;
2216 }
2217 /*
2218 ============
2219 Cmd_ExecuteString
2220
2221 A complete command line has been parsed, so try to execute it
2222 FIXME: lookupnoadd the token to speed search?
2223 ============
2224 */
2225 void Cmd_ExecuteString (cmd_state_t *cmd, const char *text, cmd_source_t src, qbool lockmutex)
2226 {
2227         int oldpos;
2228         cmd_function_t *func;
2229         cmd_alias_t *a;
2230         if (lockmutex)
2231                 Cbuf_Lock(cmd->cbuf);
2232         oldpos = cmd->cbuf->tokenizebufferpos;
2233         cmd->source = src;
2234
2235         Cmd_TokenizeString (cmd, text);
2236
2237 // execute the command line
2238         if (!Cmd_Argc(cmd))
2239                 goto done; // no tokens
2240
2241 // check functions
2242         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2243         {
2244                 if (!strcasecmp(cmd->argv[0], func->name))
2245                 {
2246                         if(cmd->Handle(cmd, func, text, src))
2247                                 goto done;
2248                 }
2249         }
2250
2251         for (func = cmd->engine_functions; func; func=func->next)
2252         {
2253                 if (!strcasecmp (cmd->argv[0], func->name))
2254                 {
2255                         if(cmd->Handle(cmd, func, text, src))
2256                                 goto done;
2257                 }
2258         }
2259
2260         // if it's a client command and no command was found, say so.
2261         if(cmd->NotFound)
2262         {
2263                 if(cmd->NotFound(cmd, func, text, src))
2264                         goto done;
2265         }
2266
2267 // check alias
2268         for (a=cmd->userdefined->alias ; a ; a=a->next)
2269         {
2270                 if (!strcasecmp (cmd->argv[0], a->name))
2271                 {
2272                         Cmd_ExecuteAlias(cmd, a);
2273                         goto done;
2274                 }
2275         }
2276
2277 // check cvars
2278         if (!Cvar_Command(cmd) && host.framecount > 0)
2279                 Con_Printf("Unknown command \"%s\"\n", Cmd_Argv(cmd, 0));
2280 done:
2281         cmd->cbuf->tokenizebufferpos = oldpos;
2282         if (lockmutex)
2283                 Cbuf_Unlock(cmd->cbuf);
2284 }
2285
2286 /*
2287 ================
2288 Cmd_CheckParm
2289
2290 Returns the position (1 to argc-1) in the command's argument list
2291 where the given parameter apears, or 0 if not present
2292 ================
2293 */
2294
2295 int Cmd_CheckParm (cmd_state_t *cmd, const char *parm)
2296 {
2297         int i;
2298
2299         if (!parm)
2300         {
2301                 Con_Printf ("Cmd_CheckParm: NULL");
2302                 return 0;
2303         }
2304
2305         for (i = 1; i < Cmd_Argc (cmd); i++)
2306                 if (!strcasecmp (parm, Cmd_Argv(cmd, i)))
2307                         return i;
2308
2309         return 0;
2310 }
2311
2312
2313
2314 void Cmd_SaveInitState(void)
2315 {
2316         cmd_iter_t *cmd_iter;
2317         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
2318         {
2319                 cmd_state_t *cmd = cmd_iter->cmd;
2320                 cmd_function_t *f;
2321                 cmd_alias_t *a;
2322                 for (f = cmd->userdefined->qc_functions; f; f = f->next)
2323                         f->initstate = true;
2324                 for (f = cmd->engine_functions; f; f = f->next)
2325                         f->initstate = true;
2326                 for (a = cmd->userdefined->alias; a; a = a->next)
2327                 {
2328                         a->initstate = true;
2329                         a->initialvalue = Mem_strdup(zonemempool, a->value);
2330                 }
2331         }
2332         Cvar_SaveInitState(&cvars_all);
2333 }
2334
2335 void Cmd_RestoreInitState(void)
2336 {
2337         cmd_iter_t *cmd_iter;
2338         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
2339         {
2340                 cmd_state_t *cmd = cmd_iter->cmd;
2341                 cmd_function_t *f, **fp;
2342                 cmd_alias_t *a, **ap;
2343                 for (fp = &cmd->userdefined->qc_functions; (f = *fp);)
2344                 {
2345                         if (f->initstate)
2346                                 fp = &f->next;
2347                         else
2348                         {
2349                                 // destroy this command, it didn't exist at init
2350                                 Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
2351                                 *fp = f->next;
2352                                 Z_Free(f);
2353                         }
2354                 }
2355                 for (fp = &cmd->engine_functions; (f = *fp);)
2356                 {
2357                         if (f->initstate)
2358                                 fp = &f->next;
2359                         else
2360                         {
2361                                 // destroy this command, it didn't exist at init
2362                                 Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
2363                                 *fp = f->next;
2364                                 Z_Free(f);
2365                         }
2366                 }
2367                 for (ap = &cmd->userdefined->alias; (a = *ap);)
2368                 {
2369                         if (a->initstate)
2370                         {
2371                                 // restore this alias, it existed at init
2372                                 if (strcmp(a->value ? a->value : "", a->initialvalue ? a->initialvalue : ""))
2373                                 {
2374                                         Con_DPrintf("Cmd_RestoreInitState: Restoring alias %s\n", a->name);
2375                                         if (a->value)
2376                                                 Z_Free(a->value);
2377                                         a->value = Mem_strdup(zonemempool, a->initialvalue);
2378                                 }
2379                                 ap = &a->next;
2380                         }
2381                         else
2382                         {
2383                                 // free this alias, it didn't exist at init...
2384                                 Con_DPrintf("Cmd_RestoreInitState: Destroying alias %s\n", a->name);
2385                                 *ap = a->next;
2386                                 if (a->value)
2387                                         Z_Free(a->value);
2388                                 Z_Free(a);
2389                         }
2390                 }
2391         }
2392         Cvar_RestoreInitState(&cvars_all);
2393 }