cmd.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // cmd.c -- Quake script command processing module
  21
  22 #include "quakedef.h"
  23 #include "thread.h"
  24
  25 cmd_state_t *cmd_local;
  26 cmd_state_t *cmd_serverfromclient;
  27
  28 cmd_userdefined_t cmd_userdefined_all;
  29 cmd_userdefined_t cmd_userdefined_null;
  30
  31 typedef struct cmd_iter_s {
  32         cmd_state_t *cmd;
  33 }
  34 cmd_iter_t;
  35
  36 static cmd_iter_t *cmd_iter_all;
  37
  38 mempool_t *cbuf_mempool;
  39
  40 // we only run the +whatever commandline arguments once
  41 qbool host_stuffcmdsrun = false;
  42
  43 //=============================================================================
  44
  45 void Cbuf_Lock(cmd_buf_t *cbuf)
  46 {
  47         Thread_LockMutex(cbuf->lock);
  48 }
  49
  50 void Cbuf_Unlock(cmd_buf_t *cbuf)
  51 {
  52         Thread_UnlockMutex(cbuf->lock);
  53 }
  54
  55
  56 /*
  57 ============
  58 Cmd_Wait_f
  59
  60 Causes execution of the remainder of the command buffer to be delayed until
  61 next frame.  This allows commands like:
  62 bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
  63 ============
  64 */
  65 static void Cmd_Wait_f (cmd_state_t *cmd)
  66 {
  67         cmd->cbuf->wait = true;
  68 }
  69
  70 /*
  71 ============
  72 Cmd_Defer_f
  73
  74 Cause a command to be executed after a delay.
  75 ============
  76 */
  77 static cmd_input_t *Cbuf_LinkGet(cmd_buf_t *cbuf, cmd_input_t *existing);
  78 static void Cmd_Defer_f (cmd_state_t *cmd)
  79 {
  80         cmd_input_t *current;
  81         cmd_buf_t *cbuf = cmd->cbuf;
  82
  83         if(Cmd_Argc(cmd) == 1)
  84         {
  85                 if(List_Is_Empty(&cbuf->deferred))
  86                         Con_Printf("No commands are pending.\n");
  87                 else
  88                 {
  89                         llist_t *pos;
  90                 List_For_Each(pos, &cbuf->deferred)
  91                 {
  92                                 current = List_Entry(*pos, cmd_input_t, list);
  93                                 Con_Printf("-> In %9.2f: %s\n", current->delay, current->text);
  94                         }
  95                 }
  96         }
  97         else if(Cmd_Argc(cmd) == 2 && !strcasecmp("clear", Cmd_Argv(cmd, 1)))
  98         {
  99                 while(!List_Is_Empty(&cbuf->deferred))
 100                         List_Move_Tail(cbuf->deferred.next, &cbuf->free);
 101         }
 102         else if(Cmd_Argc(cmd) == 3)
 103         {
 104                 const char *text = Cmd_Argv(cmd, 2);
 105                 current = Cbuf_LinkGet(cbuf, NULL);
 106                 current->length = strlen(text);
 107                 current->source = cmd;
 108                 current->delay = atof(Cmd_Argv(cmd, 1));
 109
 110                 if(current->size < current->length)
 111                 {
 112                         current->text = (char *)Mem_Realloc(cbuf_mempool, current->text, current->length + 1);
 113                         current->size = current->length;
 114                 }
 115
 116                 strlcpy(current->text, text, current->length + 1);
 117
 118                 List_Move_Tail(&current->list, &cbuf->deferred);
 119         }
 120         else
 121         {
 122                 Con_Printf("usage: defer <seconds> <command>\n"
 123                            "       defer clear\n");
 124                 return;
 125         }
 126 }
 127
 128 /*
 129 ============
 130 Cmd_Centerprint_f
 131
 132 Print something to the center of the screen using SCR_Centerprint
 133 ============
 134 */
 135 static void Cmd_Centerprint_f (cmd_state_t *cmd)
 136 {
 137         char msg[MAX_INPUTLINE];
 138         unsigned int i, c, p;
 139         c = Cmd_Argc(cmd);
 140         if(c >= 2)
 141         {
 142                 strlcpy(msg, Cmd_Argv(cmd,1), sizeof(msg));
 143                 for(i = 2; i < c; ++i)
 144                 {
 145                         strlcat(msg, " ", sizeof(msg));
 146                         strlcat(msg, Cmd_Argv(cmd, i), sizeof(msg));
 147                 }
 148                 c = (unsigned int)strlen(msg);
 149                 for(p = 0, i = 0; i < c; ++i)
 150                 {
 151                         if(msg[i] == '\\')
 152                         {
 153                                 if(msg[i+1] == 'n')
 154                                         msg[p++] = '\n';
 155                                 else if(msg[i+1] == '\\')
 156                                         msg[p++] = '\\';
 157                                 else {
 158                                         msg[p++] = '\\';
 159                                         msg[p++] = msg[i+1];
 160                                 }
 161                                 ++i;
 162                         } else {
 163                                 msg[p++] = msg[i];
 164                         }
 165                 }
 166                 msg[p] = '\0';
 167                 SCR_CenterPrint(msg);
 168         }
 169 }
 170
 171 /*
 172 =============================================================================
 173
 174                                                 COMMAND BUFFER
 175
 176 =============================================================================
 177 */
 178
 179 static cmd_input_t *Cbuf_LinkGet(cmd_buf_t *cbuf, cmd_input_t *existing)
 180 {
 181         cmd_input_t *ret = NULL;
 182         if(existing && existing->pending)
 183                 ret = existing;
 184         else if(!List_Is_Empty(&cbuf->free))
 185         {
 186                 ret = List_Entry(*cbuf->free.next, cmd_input_t, list);
 187                 ret->length = 0;
 188                 ret->pending = false;
 189         }
 190         return ret;
 191 }
 192
 193 static cmd_input_t *Cmd_AllocInputNode(void)
 194 {
 195         cmd_input_t *node = (cmd_input_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_input_t));
 196         node->list.prev = node->list.next = &node->list;
 197         node->size = node->length = node->pending = 0;
 198         return node;
 199 }
 200
 201
 202 // Cloudwalk FIXME: The entire design of this thing is overly complicated.
 203 // We could very much safely have one input node per line whether or not
 204 // the command was terminated. We don't need to split up input nodes per command
 205 // executed.
 206 static size_t Cmd_ParseInput (cmd_input_t **output, char **input)
 207 {
 208         size_t pos, cmdsize = 0, start = 0;
 209         qbool command = false, lookahead = false;
 210         qbool quotes = false, comment = false;
 211         qbool escaped = false;
 212
 213         /*
 214          * The Quake command-line is super basic. It can be entered in the console
 215          * or in config files. A semicolon is used to terminate a command and chain
 216          * them together. Otherwise, a newline delineates command input.
 217          *
 218          * In most engines, the Quake command-line is a simple linear text buffer that
 219          * is parsed when it executes. In Darkplaces, we use a linked list of command
 220          * input and parse the input on the spot.
 221          *
 222          * This was done because Darkplaces allows multiple command interpreters on the
 223          * same thread. Previously, each interpreter maintained its own buffer and this
 224          * caused problems related to execution order, and maintaining a single simple
 225          * buffer for all interpreters makes it non-trivial to keep track of which
 226          * command should execute on which interpreter.
 227          */
 228
 229         // Run until command and lookahead are both true, or until we run out of input.
 230         for (pos = 0; (*input)[pos]; pos++)
 231         {
 232                 // Look for newlines and semicolons. Ignore semicolons in quotes.
 233                 switch((*input)[pos])
 234                 {
 235                 case '\r':
 236                 case '\n':
 237                         command = false;
 238                         comment = false;
 239                         break;
 240                 default:
 241                         if(!comment) // Not a newline so far. Still not a valid command yet.
 242                         {
 243                                 if(!quotes && (*input)[pos] == ';') // Ignore semicolons in quotes.
 244                                         command = false;
 245                                 else if (ISCOMMENT((*input), pos)) // Comments
 246                                 {
 247                                         comment = true;
 248                                         command = false;
 249                                 }
 250                                 else
 251                                 {
 252                                         command = true;
 253                                         if(!lookahead)
 254                                         {
 255                                                 if(!cmdsize)
 256                                                         start = pos;
 257                                                 cmdsize++;
 258                                         }
 259
 260                                         switch((*input)[pos])
 261                                         {
 262                                         case '"':
 263                                                 if (!escaped)
 264                                                         quotes = !quotes;
 265                                                 else
 266                                                         escaped = false;
 267                                                 break;
 268                                         case '\\':
 269                                                 if (!escaped && quotes)
 270                                                         escaped = true;
 271                                                 else if (escaped)
 272                                                         escaped = false;
 273                                                 break;
 274                                         }
 275                                 }
 276                         }
 277                 }
 278                 if(cmdsize && !command)
 279                         lookahead = true;
 280
 281                 if(command && lookahead)
 282                         break;
 283         }
 284
 285         if(cmdsize)
 286         {
 287                 size_t offset = 0;
 288
 289                 if(!*output)
 290                         *output = Cmd_AllocInputNode();
 291
 292                 // Append, since this input line hasn't closed yet.
 293                 if((*output)->pending)
 294                         offset = (*output)->length;
 295
 296                 (*output)->length += cmdsize;
 297
 298                 if((*output)->size < (*output)->length)
 299                 {
 300                         (*output)->text = (char *)Mem_Realloc(cbuf_mempool, (*output)->text, (*output)->length + 1);
 301                         (*output)->size = (*output)->length;
 302                 }
 303
 304                 strlcpy(&(*output)->text[offset], &(*input)[start], cmdsize + 1);
 305
 306                 /*
 307                  * If we were still looking ahead by the time we broke from the loop, the command input
 308                  * hasn't terminated yet and we're still expecting more, so keep this node open for appending later.
 309                  */
 310                 (*output)->pending = !lookahead;
 311         }
 312
 313         // Set input to its new position. Can be NULL.
 314         *input = &(*input)[pos];
 315
 316         return cmdsize;
 317 }
 318
 319 // Cloudwalk: Not happy with this, but it works.
 320 static void Cbuf_LinkCreate(cmd_state_t *cmd, llist_t *head, cmd_input_t *existing, const char *text)
 321 {
 322         char *in = (char *)&text[0];
 323         cmd_buf_t *cbuf = cmd->cbuf;
 324         size_t totalsize = 0, newsize = 0;
 325         cmd_input_t *current = NULL;
 326
 327         // Slide the pointer down until we reach the end
 328         while(*in)
 329         {
 330                 // Check if the current node is still accepting input (input line hasn't terminated)
 331                 current = Cbuf_LinkGet(cbuf, existing);
 332                 newsize = Cmd_ParseInput(&current, &in);
 333
 334                 // Valid command
 335                 if(newsize)
 336                 {
 337                         // current will match existing if the input line hasn't terminated yet
 338                         if(current != existing)
 339                         {
 340                                 current->source = cmd;
 341                                 List_Move_Tail(&current->list, head);
 342                         }
 343
 344                         totalsize += newsize;
 345                 }
 346                 else if (current == existing && !totalsize)
 347                         current->pending = false;
 348                 current = NULL;
 349         }
 350
 351         cbuf->size += totalsize;
 352 }
 353
 354 /*
 355 ============
 356 Cbuf_AddText
 357
 358 Adds command text at the end of the buffer
 359 ============
 360 */
 361 void Cbuf_AddText (cmd_state_t *cmd, const char *text)
 362 {
 363         size_t l = strlen(text);
 364         cmd_buf_t *cbuf = cmd->cbuf;
 365         llist_t llist = {&llist, &llist};
 366
 367         Cbuf_Lock(cbuf);
 368
 369         if (cbuf->maxsize - cbuf->size <= l)
 370                 Con_Print("Cbuf_AddText: overflow\n");
 371         else
 372         {
 373                 Cbuf_LinkCreate(cmd, &llist, (List_Is_Empty(&cbuf->start) ? NULL : List_Entry(*cbuf->start.prev, cmd_input_t, list)), text);
 374                 if(!List_Is_Empty(&llist))
 375                         List_Splice_Tail(&llist, &cbuf->start);
 376         }
 377         Cbuf_Unlock(cbuf);
 378 }
 379
 380 /*
 381 ============
 382 Cbuf_InsertText
 383
 384 Adds command text immediately after the current command
 385 FIXME: actually change the command buffer to do less copying
 386 ============
 387 */
 388 void Cbuf_InsertText (cmd_state_t *cmd, const char *text)
 389 {
 390         cmd_buf_t *cbuf = cmd->cbuf;
 391         llist_t llist = {&llist, &llist};
 392         size_t l = strlen(text);
 393
 394         Cbuf_Lock(cbuf);
 395
 396         // we need to memmove the existing text and stuff this in before it...
 397         if (cbuf->size + l >= cbuf->maxsize)
 398                 Con_Print("Cbuf_InsertText: overflow\n");
 399         else
 400         {
 401                 Cbuf_LinkCreate(cmd, &llist, List_Entry(*cbuf->start.next, cmd_input_t, list), text);
 402                 if(!List_Is_Empty(&llist))
 403                         List_Splice(&llist, &cbuf->start);
 404         }
 405
 406         Cbuf_Unlock(cbuf);
 407 }
 408
 409 /*
 410 ============
 411 Cbuf_Execute_Deferred --blub
 412 ============
 413 */
 414 static void Cbuf_Execute_Deferred (cmd_buf_t *cbuf)
 415 {
 416         llist_t *pos;
 417         cmd_input_t *current;
 418         double eat;
 419
 420         if (host.realtime - cbuf->deferred_oldtime < 0 || host.realtime - cbuf->deferred_oldtime > 1800)
 421                 cbuf->deferred_oldtime = host.realtime;
 422         eat = host.realtime - cbuf->deferred_oldtime;
 423         if (eat < (1.0 / 120.0))
 424                 return;
 425         cbuf->deferred_oldtime = host.realtime;
 426
 427     List_For_Each(pos, &cbuf->deferred)
 428         {
 429                 current = List_Entry(*pos, cmd_input_t, list);
 430                 current->delay -= eat;
 431                 if(current->delay <= 0)
 432                 {
 433                         cbuf->size += current->length;
 434                         List_Move(pos, &cbuf->start);
 435                         // We must return and come back next frame or the engine will freeze. Fragile... like glass :3
 436                         return;
 437                 }
 438         }
 439 }
 440
 441 /*
 442 ============
 443 Cbuf_Execute
 444 ============
 445 */
 446 static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias );
 447 void Cbuf_Execute (cmd_buf_t *cbuf)
 448 {
 449         cmd_input_t *current;
 450         char preprocessed[MAX_INPUTLINE];
 451         char *firstchar;
 452
 453         // LadyHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
 454         cbuf->tokenizebufferpos = 0;
 455
 456         while (!List_Is_Empty(&cbuf->start))
 457         {
 458                 /*
 459                  * Delete the text from the command buffer and move remaining
 460                  * commands down. This is necessary because commands (exec, alias)
 461                  * can insert data at the beginning of the text buffer
 462                  */
 463                 current = List_Entry(*cbuf->start.next, cmd_input_t, list);
 464
 465                 // Recycle memory so using WASD doesn't cause a malloc and free
 466                 List_Move_Tail(&current->list, &cbuf->free);
 467
 468                 /*
 469                  * Assume we're rolling with the current command-line and
 470                  * always set this false because alias expansion or cbuf insertion
 471                  * without a newline may set this true, and cause weirdness.
 472                  */
 473                 current->pending = false;
 474
 475                 cbuf->size -= current->length;
 476
 477                 firstchar = current->text;
 478                 while(*firstchar && ISWHITESPACE(*firstchar))
 479                         ++firstchar;
 480                 if((strncmp(firstchar, "alias", 5)   || !ISWHITESPACE(firstchar[5])) &&
 481                    (strncmp(firstchar, "bind", 4)    || !ISWHITESPACE(firstchar[4])) &&
 482                    (strncmp(firstchar, "in_bind", 7) || !ISWHITESPACE(firstchar[7])))
 483                 {
 484                         if(Cmd_PreprocessString(current->source, current->text, preprocessed, sizeof(preprocessed), NULL ))
 485                                 Cmd_ExecuteString(current->source, preprocessed, src_local, false);
 486                 }
 487                 else
 488                 {
 489                         Cmd_ExecuteString (current->source, current->text, src_local, false);
 490                 }
 491
 492                 current = NULL;
 493
 494                 if (cbuf->wait)
 495                 {
 496                         /*
 497                          * Skip out while text still remains in
 498                          * buffer, leaving it for next frame
 499                          */
 500                         cbuf->wait = false;
 501                         break;
 502                 }
 503         }
 504 }
 505
 506 /*
 507 ===================
 508 Cbuf_Frame_Input
 509
 510 Add them exactly as if they had been typed at the console
 511 ===================
 512 */
 513 static void Cbuf_Frame_Input(void)
 514 {
 515         char *line;
 516
 517         while ((line = Sys_ConsoleInput()))
 518                         Cbuf_AddText(cmd_local, line);
 519 }
 520
 521 void Cbuf_Frame(cmd_buf_t *cbuf)
 522 {
 523         // check for commands typed to the host
 524         Cbuf_Frame_Input();
 525
 526 //      R_TimeReport("preconsole");
 527
 528         // execute commands queued with the defer command
 529         Cbuf_Execute_Deferred(cbuf);
 530         if (cbuf->size)
 531         {
 532                 SV_LockThreadMutex();
 533                 Cbuf_Execute(cbuf);
 534                 SV_UnlockThreadMutex();
 535         }
 536
 537 //      R_TimeReport("console");
 538 }
 539
 540 /*
 541 ==============================================================================
 542
 543                                                 SCRIPT COMMANDS
 544
 545 ==============================================================================
 546 */
 547
 548 /*
 549 ===============
 550 Cmd_StuffCmds_f
 551
 552 Adds command line parameters as script statements
 553 Commands lead with a +, and continue until a - or another +
 554 quake +prog jctest.qp +cmd amlev1
 555 quake -nosound +cmd amlev1
 556 ===============
 557 */
 558 static void Cmd_StuffCmds_f (cmd_state_t *cmd)
 559 {
 560         int             i, j, l;
 561         // this is for all commandline options combined (and is bounds checked)
 562         char    build[MAX_INPUTLINE];
 563
 564         if (Cmd_Argc (cmd) != 1)
 565         {
 566                 Con_Print("stuffcmds : execute command line parameters\n");
 567                 return;
 568         }
 569
 570         // no reason to run the commandline arguments twice
 571         if (host_stuffcmdsrun)
 572                 return;
 573
 574         host_stuffcmdsrun = true;
 575         build[0] = 0;
 576         l = 0;
 577         for (i = 0;i < sys.argc;i++)
 578         {
 579                 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)
 580                 {
 581                         j = 1;
 582                         while (sys.argv[i][j])
 583                                 build[l++] = sys.argv[i][j++];
 584                         i++;
 585                         for (;i < sys.argc;i++)
 586                         {
 587                                 if (!sys.argv[i])
 588                                         continue;
 589                                 if ((sys.argv[i][0] == '+' || sys.argv[i][0] == '-') && (sys.argv[i][1] < '0' || sys.argv[i][1] > '9'))
 590                                         break;
 591                                 if (l + strlen(sys.argv[i]) + 4 > sizeof(build) - 1)
 592                                         break;
 593                                 build[l++] = ' ';
 594                                 if (strchr(sys.argv[i], ' '))
 595                                         build[l++] = '\"';
 596                                 for (j = 0;sys.argv[i][j];j++)
 597                                         build[l++] = sys.argv[i][j];
 598                                 if (strchr(sys.argv[i], ' '))
 599                                         build[l++] = '\"';
 600                         }
 601                         build[l++] = '\n';
 602                         i--;
 603                 }
 604         }
 605         // now terminate the combined string and prepend it to the command buffer
 606         // we already reserved space for the terminator
 607         build[l++] = 0;
 608         Cbuf_InsertText (cmd, build);
 609 }
 610
 611 static void Cmd_Exec(cmd_state_t *cmd, const char *filename)
 612 {
 613         char *f;
 614         size_t filenameLen = strlen(filename);
 615         qbool isdefaultcfg =
 616                 !strcmp(filename, "default.cfg") ||
 617                 (filenameLen >= 12 && !strcmp(filename + filenameLen - 12, "/default.cfg"));
 618
 619         if (!strcmp(filename, "config.cfg"))
 620         {
 621                 filename = CONFIGFILENAME;
 622                 if (Sys_CheckParm("-noconfig"))
 623                         return; // don't execute config.cfg
 624         }
 625
 626         f = (char *)FS_LoadFile (filename, tempmempool, false, NULL);
 627         if (!f)
 628         {
 629                 Con_Printf("couldn't exec %s\n",filename);
 630                 return;
 631         }
 632         Con_Printf("execing %s\n",filename);
 633
 634         // if executing default.cfg for the first time, lock the cvar defaults
 635         // it may seem backwards to insert this text BEFORE the default.cfg
 636         // but Cbuf_InsertText inserts before, so this actually ends up after it.
 637         if (isdefaultcfg)
 638                 Cbuf_InsertText(cmd, "\ncvar_lockdefaults\n");
 639
 640         Cbuf_InsertText (cmd, f);
 641         Mem_Free(f);
 642
 643         if (isdefaultcfg)
 644         {
 645                 // special defaults for specific games go here, these execute before default.cfg
 646                 // Nehahra pushable crates malfunction in some levels if this is on
 647                 // Nehahra NPC AI is confused by blowupfallenzombies
 648                 switch(gamemode)
 649                 {
 650                 case GAME_NORMAL:
 651                         Cbuf_InsertText(cmd, "\n"
 652 "sv_gameplayfix_blowupfallenzombies 0\n"
 653 "sv_gameplayfix_findradiusdistancetobox 0\n"
 654 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 655 "sv_gameplayfix_slidemoveprojectiles 0\n"
 656 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 657 "sv_gameplayfix_setmodelrealbox 0\n"
 658 "sv_gameplayfix_droptofloorstartsolid 0\n"
 659 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 660 "sv_gameplayfix_noairborncorpse 0\n"
 661 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 662 "sv_gameplayfix_easierwaterjump 0\n"
 663 "sv_gameplayfix_delayprojectiles 0\n"
 664 "sv_gameplayfix_multiplethinksperframe 0\n"
 665 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 666 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 667 "sv_gameplayfix_swiminbmodels 0\n"
 668 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 669 "sys_ticrate 0.01388889\n"
 670 "r_shadow_gloss 1\n"
 671 "r_shadow_bumpscale_basetexture 0\n"
 672 "csqc_polygons_defaultmaterial_nocullface 0\n"
 673                                 );
 674                         break;
 675                 case GAME_NEHAHRA:
 676                         Cbuf_InsertText(cmd, "\n"
 677 "sv_gameplayfix_blowupfallenzombies 0\n"
 678 "sv_gameplayfix_findradiusdistancetobox 0\n"
 679 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 680 "sv_gameplayfix_slidemoveprojectiles 0\n"
 681 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 682 "sv_gameplayfix_setmodelrealbox 0\n"
 683 "sv_gameplayfix_droptofloorstartsolid 0\n"
 684 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 685 "sv_gameplayfix_noairborncorpse 0\n"
 686 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 687 "sv_gameplayfix_easierwaterjump 0\n"
 688 "sv_gameplayfix_delayprojectiles 0\n"
 689 "sv_gameplayfix_multiplethinksperframe 0\n"
 690 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 691 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 692 "sv_gameplayfix_swiminbmodels 0\n"
 693 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 694 "sys_ticrate 0.01388889\n"
 695 "r_shadow_gloss 1\n"
 696 "r_shadow_bumpscale_basetexture 0\n"
 697 "csqc_polygons_defaultmaterial_nocullface 0\n"
 698                                 );
 699                         break;
 700                 // 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.
 701                 // 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
 702                 // hipnotic mission pack has issues in their proximity mine sticking code, which causes them to bounce off.
 703                 case GAME_HIPNOTIC:
 704                 case GAME_QUOTH:
 705                         Cbuf_InsertText(cmd, "\n"
 706 "sv_gameplayfix_blowupfallenzombies 0\n"
 707 "sv_gameplayfix_findradiusdistancetobox 0\n"
 708 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 709 "sv_gameplayfix_slidemoveprojectiles 0\n"
 710 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 711 "sv_gameplayfix_setmodelrealbox 0\n"
 712 "sv_gameplayfix_droptofloorstartsolid 0\n"
 713 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 714 "sv_gameplayfix_noairborncorpse 0\n"
 715 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 716 "sv_gameplayfix_easierwaterjump 0\n"
 717 "sv_gameplayfix_delayprojectiles 0\n"
 718 "sv_gameplayfix_multiplethinksperframe 0\n"
 719 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 720 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 721 "sv_gameplayfix_swiminbmodels 0\n"
 722 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 723 "sys_ticrate 0.02\n"
 724 "r_shadow_gloss 1\n"
 725 "r_shadow_bumpscale_basetexture 0\n"
 726 "csqc_polygons_defaultmaterial_nocullface 0\n"
 727                                 );
 728                         break;
 729                 // rogue mission pack has a guardian boss that does not wake up if findradius returns one of the entities around its spawn area
 730                 case GAME_ROGUE:
 731                         Cbuf_InsertText(cmd, "\n"
 732 "sv_gameplayfix_blowupfallenzombies 0\n"
 733 "sv_gameplayfix_findradiusdistancetobox 0\n"
 734 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 735 "sv_gameplayfix_slidemoveprojectiles 0\n"
 736 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 737 "sv_gameplayfix_setmodelrealbox 0\n"
 738 "sv_gameplayfix_droptofloorstartsolid 0\n"
 739 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 740 "sv_gameplayfix_noairborncorpse 0\n"
 741 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 742 "sv_gameplayfix_easierwaterjump 0\n"
 743 "sv_gameplayfix_delayprojectiles 0\n"
 744 "sv_gameplayfix_multiplethinksperframe 0\n"
 745 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 746 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 747 "sv_gameplayfix_swiminbmodels 0\n"
 748 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 749 "sys_ticrate 0.01388889\n"
 750 "r_shadow_gloss 1\n"
 751 "r_shadow_bumpscale_basetexture 0\n"
 752 "csqc_polygons_defaultmaterial_nocullface 0\n"
 753                                 );
 754                         break;
 755                 case GAME_TENEBRAE:
 756                         Cbuf_InsertText(cmd, "\n"
 757 "sv_gameplayfix_blowupfallenzombies 0\n"
 758 "sv_gameplayfix_findradiusdistancetobox 0\n"
 759 "sv_gameplayfix_grenadebouncedownslopes 0\n"
 760 "sv_gameplayfix_slidemoveprojectiles 0\n"
 761 "sv_gameplayfix_upwardvelocityclearsongroundflag 0\n"
 762 "sv_gameplayfix_setmodelrealbox 0\n"
 763 "sv_gameplayfix_droptofloorstartsolid 0\n"
 764 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 0\n"
 765 "sv_gameplayfix_noairborncorpse 0\n"
 766 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 0\n"
 767 "sv_gameplayfix_easierwaterjump 0\n"
 768 "sv_gameplayfix_delayprojectiles 0\n"
 769 "sv_gameplayfix_multiplethinksperframe 0\n"
 770 "sv_gameplayfix_fixedcheckwatertransition 0\n"
 771 "sv_gameplayfix_q1bsptracelinereportstexture 0\n"
 772 "sv_gameplayfix_swiminbmodels 0\n"
 773 "sv_gameplayfix_downtracesupportsongroundflag 0\n"
 774 "sys_ticrate 0.01388889\n"
 775 "r_shadow_gloss 2\n"
 776 "r_shadow_bumpscale_basetexture 4\n"
 777 "csqc_polygons_defaultmaterial_nocullface 0\n"
 778                                 );
 779                         break;
 780                 case GAME_NEXUIZ:
 781                         Cbuf_InsertText(cmd, "\n"
 782 "sv_gameplayfix_blowupfallenzombies 1\n"
 783 "sv_gameplayfix_findradiusdistancetobox 1\n"
 784 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 785 "sv_gameplayfix_slidemoveprojectiles 1\n"
 786 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 787 "sv_gameplayfix_setmodelrealbox 1\n"
 788 "sv_gameplayfix_droptofloorstartsolid 1\n"
 789 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 790 "sv_gameplayfix_noairborncorpse 1\n"
 791 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 792 "sv_gameplayfix_easierwaterjump 1\n"
 793 "sv_gameplayfix_delayprojectiles 1\n"
 794 "sv_gameplayfix_multiplethinksperframe 1\n"
 795 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 796 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 797 "sv_gameplayfix_swiminbmodels 1\n"
 798 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 799 "sys_ticrate 0.01388889\n"
 800 "sv_gameplayfix_q2airaccelerate 1\n"
 801 "sv_gameplayfix_stepmultipletimes 1\n"
 802 "csqc_polygons_defaultmaterial_nocullface 1\n"
 803 "con_chatsound_team_mask 13\n"
 804                                 );
 805                         break;
 806                 case GAME_XONOTIC:
 807                 case GAME_VORETOURNAMENT:
 808                         // 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
 809                         Cbuf_InsertText(cmd, "\n"
 810 "csqc_polygons_defaultmaterial_nocullface 1\n"
 811 "con_chatsound_team_mask 13\n"
 812 "sv_gameplayfix_customstats 1\n"
 813                                 );
 814                         break;
 815                 // Steel Storm: Burning Retribution csqc misinterprets CSQC_InputEvent if type is a value other than 0 or 1
 816                 case GAME_STEELSTORM:
 817                         Cbuf_InsertText(cmd, "\n"
 818 "sv_gameplayfix_blowupfallenzombies 1\n"
 819 "sv_gameplayfix_findradiusdistancetobox 1\n"
 820 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 821 "sv_gameplayfix_slidemoveprojectiles 1\n"
 822 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 823 "sv_gameplayfix_setmodelrealbox 1\n"
 824 "sv_gameplayfix_droptofloorstartsolid 1\n"
 825 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 826 "sv_gameplayfix_noairborncorpse 1\n"
 827 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 828 "sv_gameplayfix_easierwaterjump 1\n"
 829 "sv_gameplayfix_delayprojectiles 1\n"
 830 "sv_gameplayfix_multiplethinksperframe 1\n"
 831 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 832 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 833 "sv_gameplayfix_swiminbmodels 1\n"
 834 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 835 "sys_ticrate 0.01388889\n"
 836 "cl_csqc_generatemousemoveevents 0\n"
 837 "csqc_polygons_defaultmaterial_nocullface 1\n"
 838                                 );
 839                         break;
 840                 default:
 841                         Cbuf_InsertText(cmd, "\n"
 842 "sv_gameplayfix_blowupfallenzombies 1\n"
 843 "sv_gameplayfix_findradiusdistancetobox 1\n"
 844 "sv_gameplayfix_grenadebouncedownslopes 1\n"
 845 "sv_gameplayfix_slidemoveprojectiles 1\n"
 846 "sv_gameplayfix_upwardvelocityclearsongroundflag 1\n"
 847 "sv_gameplayfix_setmodelrealbox 1\n"
 848 "sv_gameplayfix_droptofloorstartsolid 1\n"
 849 "sv_gameplayfix_droptofloorstartsolid_nudgetocorrect 1\n"
 850 "sv_gameplayfix_noairborncorpse 1\n"
 851 "sv_gameplayfix_noairborncorpse_allowsuspendeditems 1\n"
 852 "sv_gameplayfix_easierwaterjump 1\n"
 853 "sv_gameplayfix_delayprojectiles 1\n"
 854 "sv_gameplayfix_multiplethinksperframe 1\n"
 855 "sv_gameplayfix_fixedcheckwatertransition 1\n"
 856 "sv_gameplayfix_q1bsptracelinereportstexture 1\n"
 857 "sv_gameplayfix_swiminbmodels 1\n"
 858 "sv_gameplayfix_downtracesupportsongroundflag 1\n"
 859 "sys_ticrate 0.01388889\n"
 860 "csqc_polygons_defaultmaterial_nocullface 0\n"
 861                                 );
 862                         break;
 863                 }
 864         }
 865 }
 866
 867 /*
 868 ===============
 869 Cmd_Exec_f
 870 ===============
 871 */
 872 static void Cmd_Exec_f (cmd_state_t *cmd)
 873 {
 874         fssearch_t *s;
 875         int i;
 876
 877         if (Cmd_Argc(cmd) != 2)
 878         {
 879                 Con_Print("exec <filename> : execute a script file\n");
 880                 return;
 881         }
 882
 883         s = FS_Search(Cmd_Argv(cmd, 1), true, true, NULL);
 884         if(!s || !s->numfilenames)
 885         {
 886                 Con_Printf("couldn't exec %s\n",Cmd_Argv(cmd, 1));
 887                 return;
 888         }
 889
 890         for(i = 0; i < s->numfilenames; ++i)
 891                 Cmd_Exec(cmd, s->filenames[i]);
 892
 893         FS_FreeSearch(s);
 894 }
 895
 896
 897 /*
 898 ===============
 899 Cmd_Echo_f
 900
 901 Just prints the rest of the line to the console
 902 ===============
 903 */
 904 static void Cmd_Echo_f (cmd_state_t *cmd)
 905 {
 906         int             i;
 907
 908         for (i=1 ; i<Cmd_Argc(cmd) ; i++)
 909                 Con_Printf("%s ",Cmd_Argv(cmd, i));
 910         Con_Print("\n");
 911 }
 912
 913 // DRESK - 5/14/06
 914 // Support Doom3-style Toggle Console Command
 915 /*
 916 ===============
 917 Cmd_Toggle_f
 918
 919 Toggles a specified console variable amongst the values specified (default is 0 and 1)
 920 ===============
 921 */
 922 static void Cmd_Toggle_f(cmd_state_t *cmd)
 923 {
 924         // Acquire Number of Arguments
 925         int nNumArgs = Cmd_Argc(cmd);
 926
 927         if(nNumArgs == 1)
 928                 // No Arguments Specified; Print Usage
 929                 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");
 930         else
 931         { // Correct Arguments Specified
 932                 // Acquire Potential CVar
 933                 cvar_t* cvCVar = Cvar_FindVar(cmd->cvars, Cmd_Argv(cmd, 1), cmd->cvars_flagsmask);
 934
 935                 if(cvCVar != NULL)
 936                 { // Valid CVar
 937                         if(nNumArgs == 2)
 938                         { // Default Usage
 939                                 if(cvCVar->integer)
 940                                         Cvar_SetValueQuick(cvCVar, 0);
 941                                 else
 942                                         Cvar_SetValueQuick(cvCVar, 1);
 943                         }
 944                         else
 945                         if(nNumArgs == 3)
 946                         { // 0 and Specified Usage
 947                                 if(cvCVar->integer == atoi(Cmd_Argv(cmd, 2) ) )
 948                                         // CVar is Specified Value; // Reset to 0
 949                                         Cvar_SetValueQuick(cvCVar, 0);
 950                                 else
 951                                 if(cvCVar->integer == 0)
 952                                         // CVar is 0; Specify Value
 953                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 954                                 else
 955                                         // CVar does not match; Reset to 0
 956                                         Cvar_SetValueQuick(cvCVar, 0);
 957                         }
 958                         else
 959                         { // Variable Values Specified
 960                                 int nCnt;
 961                                 int bFound = 0;
 962
 963                                 for(nCnt = 2; nCnt < nNumArgs; nCnt++)
 964                                 { // Cycle through Values
 965                                         if( strcmp(cvCVar->string, Cmd_Argv(cmd, nCnt) ) == 0)
 966                                         { // Current Value Located; Increment to Next
 967                                                 if( (nCnt + 1) == nNumArgs)
 968                                                         // Max Value Reached; Reset
 969                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 970                                                 else
 971                                                         // Next Value
 972                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, nCnt + 1) );
 973
 974                                                 // End Loop
 975                                                 nCnt = nNumArgs;
 976                                                 // Assign Found
 977                                                 bFound = 1;
 978                                         }
 979                                 }
 980                                 if(!bFound)
 981                                         // Value not Found; Reset to Original
 982                                         Cvar_SetQuick(cvCVar, Cmd_Argv(cmd, 2) );
 983                         }
 984
 985                 }
 986                 else
 987                 { // Invalid CVar
 988                         Con_Printf("ERROR : CVar '%s' not found\n", Cmd_Argv(cmd, 1) );
 989                 }
 990         }
 991 }
 992
 993 /*
 994 ===============
 995 Cmd_Alias_f
 996
 997 Creates a new command that executes a command string (possibly ; seperated)
 998 ===============
 999 */
1000 static void Cmd_Alias_f (cmd_state_t *cmd)
1001 {
1002         cmd_alias_t     *a;
1003         char            line[MAX_INPUTLINE];
1004         int                     i, c;
1005         const char              *s;
1006         size_t          alloclen;
1007
1008         if (Cmd_Argc(cmd) == 1)
1009         {
1010                 Con_Print("Current alias commands:\n");
1011                 for (a = cmd->userdefined->alias ; a ; a=a->next)
1012                         Con_Printf("%s : %s", a->name, a->value);
1013                 return;
1014         }
1015
1016         s = Cmd_Argv(cmd, 1);
1017         if (strlen(s) >= MAX_ALIAS_NAME)
1018         {
1019                 Con_Print("Alias name is too long\n");
1020                 return;
1021         }
1022
1023         // if the alias already exists, reuse it
1024         for (a = cmd->userdefined->alias ; a ; a=a->next)
1025         {
1026                 if (!strcmp(s, a->name))
1027                 {
1028                         Z_Free (a->value);
1029                         break;
1030                 }
1031         }
1032
1033         if (!a)
1034         {
1035                 cmd_alias_t *prev, *current;
1036
1037                 a = (cmd_alias_t *)Z_Malloc (sizeof(cmd_alias_t));
1038                 strlcpy (a->name, s, sizeof (a->name));
1039                 // insert it at the right alphanumeric position
1040                 for( prev = NULL, current = cmd->userdefined->alias ; current && strcmp( current->name, a->name ) < 0 ; prev = current, current = current->next )
1041                         ;
1042                 if( prev ) {
1043                         prev->next = a;
1044                 } else {
1045                         cmd->userdefined->alias = a;
1046                 }
1047                 a->next = current;
1048         }
1049
1050
1051 // copy the rest of the command line
1052         line[0] = 0;            // start out with a null string
1053         c = Cmd_Argc(cmd);
1054         for (i=2 ; i < c ; i++)
1055         {
1056                 if (i != 2)
1057                         strlcat (line, " ", sizeof (line));
1058                 strlcat (line, Cmd_Argv(cmd, i), sizeof (line));
1059         }
1060         strlcat (line, "\n", sizeof (line));
1061
1062         alloclen = strlen (line) + 1;
1063         if(alloclen >= 2)
1064                 line[alloclen - 2] = '\n'; // to make sure a newline is appended even if too long
1065         a->value = (char *)Z_Malloc (alloclen);
1066         memcpy (a->value, line, alloclen);
1067 }
1068
1069 /*
1070 ===============
1071 Cmd_UnAlias_f
1072
1073 Remove existing aliases.
1074 ===============
1075 */
1076 static void Cmd_UnAlias_f (cmd_state_t *cmd)
1077 {
1078         cmd_alias_t     *a, *p;
1079         int i;
1080         const char *s;
1081
1082         if(Cmd_Argc(cmd) == 1)
1083         {
1084                 Con_Print("unalias: Usage: unalias alias1 [alias2 ...]\n");
1085                 return;
1086         }
1087
1088         for(i = 1; i < Cmd_Argc(cmd); ++i)
1089         {
1090                 s = Cmd_Argv(cmd, i);
1091                 p = NULL;
1092                 for(a = cmd->userdefined->alias; a; p = a, a = a->next)
1093                 {
1094                         if(!strcmp(s, a->name))
1095                         {
1096                                 if (a->initstate) // we can not remove init aliases
1097                                         continue;
1098                                 if(a == cmd->userdefined->alias)
1099                                         cmd->userdefined->alias = a->next;
1100                                 if(p)
1101                                         p->next = a->next;
1102                                 Z_Free(a->value);
1103                                 Z_Free(a);
1104                                 break;
1105                         }
1106                 }
1107                 if(!a)
1108                         Con_Printf("unalias: %s alias not found\n", s);
1109         }
1110 }
1111
1112 /*
1113 =============================================================================
1114
1115                                         COMMAND EXECUTION
1116
1117 =============================================================================
1118 */
1119
1120 static const char *Cmd_GetDirectCvarValue(cmd_state_t *cmd, const char *varname, cmd_alias_t *alias, qbool *is_multiple)
1121 {
1122         cvar_t *cvar;
1123         long argno;
1124         char *endptr;
1125         static char vabuf[1024]; // cmd_mutex
1126
1127         if(is_multiple)
1128                 *is_multiple = false;
1129
1130         if(!varname || !*varname)
1131                 return NULL;
1132
1133         if(alias)
1134         {
1135                 if(!strcmp(varname, "*"))
1136                 {
1137                         if(is_multiple)
1138                                 *is_multiple = true;
1139                         return Cmd_Args(cmd);
1140                 }
1141                 else if(!strcmp(varname, "#"))
1142                 {
1143                         return va(vabuf, sizeof(vabuf), "%d", Cmd_Argc(cmd));
1144                 }
1145                 else if(varname[strlen(varname) - 1] == '-')
1146                 {
1147                         argno = strtol(varname, &endptr, 10);
1148                         if(endptr == varname + strlen(varname) - 1)
1149                         {
1150                                 // whole string is a number, apart from the -
1151                                 const char *p = Cmd_Args(cmd);
1152                                 for(; argno > 1; --argno)
1153                                         if(!COM_ParseToken_Console(&p))
1154                                                 break;
1155                                 if(p)
1156                                 {
1157                                         if(is_multiple)
1158                                                 *is_multiple = true;
1159
1160                                         // kill pre-argument whitespace
1161                                         for (;*p && ISWHITESPACE(*p);p++)
1162                                                 ;
1163
1164                                         return p;
1165                                 }
1166                         }
1167                 }
1168                 else
1169                 {
1170                         argno = strtol(varname, &endptr, 10);
1171                         if(*endptr == 0)
1172                         {
1173                                 // whole string is a number
1174                                 // NOTE: we already made sure we don't have an empty cvar name!
1175                                 if(argno >= 0 && argno < Cmd_Argc(cmd))
1176                                         return Cmd_Argv(cmd, argno);
1177                         }
1178                 }
1179         }
1180
1181         if((cvar = Cvar_FindVar(cmd->cvars, varname, cmd->cvars_flagsmask)) && !(cvar->flags & CF_PRIVATE))
1182                 return cvar->string;
1183
1184         return NULL;
1185 }
1186
1187 qbool Cmd_QuoteString(char *out, size_t outlen, const char *in, const char *quoteset, qbool putquotes)
1188 {
1189         qbool quote_quot = !!strchr(quoteset, '"');
1190         qbool quote_backslash = !!strchr(quoteset, '\\');
1191         qbool quote_dollar = !!strchr(quoteset, '$');
1192
1193         if(putquotes)
1194         {
1195                 if(outlen <= 2)
1196                 {
1197                         *out++ = 0;
1198                         return false;
1199                 }
1200                 *out++ = '"'; --outlen;
1201                 --outlen;
1202         }
1203
1204         while(*in)
1205         {
1206                 if(*in == '"' && quote_quot)
1207                 {
1208                         if(outlen <= 2)
1209                                 goto fail;
1210                         *out++ = '\\'; --outlen;
1211                         *out++ = '"'; --outlen;
1212                 }
1213                 else if(*in == '\\' && quote_backslash)
1214                 {
1215                         if(outlen <= 2)
1216                                 goto fail;
1217                         *out++ = '\\'; --outlen;
1218                         *out++ = '\\'; --outlen;
1219                 }
1220                 else if(*in == '$' && quote_dollar)
1221                 {
1222                         if(outlen <= 2)
1223                                 goto fail;
1224                         *out++ = '$'; --outlen;
1225                         *out++ = '$'; --outlen;
1226                 }
1227                 else
1228                 {
1229                         if(outlen <= 1)
1230                                 goto fail;
1231                         *out++ = *in; --outlen;
1232                 }
1233                 ++in;
1234         }
1235         if(putquotes)
1236                 *out++ = '"';
1237         *out++ = 0;
1238         return true;
1239 fail:
1240         if(putquotes)
1241                 *out++ = '"';
1242         *out++ = 0;
1243         return false;
1244 }
1245
1246 static const char *Cmd_GetCvarValue(cmd_state_t *cmd, const char *var, size_t varlen, cmd_alias_t *alias)
1247 {
1248         static char varname[MAX_INPUTLINE]; // cmd_mutex
1249         static char varval[MAX_INPUTLINE]; // cmd_mutex
1250         const char *varstr = NULL;
1251         char *varfunc;
1252         qbool required = false;
1253         qbool optional = false;
1254         static char asis[] = "asis"; // just to suppress const char warnings
1255
1256         if(varlen >= MAX_INPUTLINE)
1257                 varlen = MAX_INPUTLINE - 1;
1258         memcpy(varname, var, varlen);
1259         varname[varlen] = 0;
1260         varfunc = strchr(varname, ' ');
1261
1262         if(varfunc)
1263         {
1264                 *varfunc = 0;
1265                 ++varfunc;
1266         }
1267
1268         if(*var == 0)
1269         {
1270                 // empty cvar name?
1271                 if(alias)
1272                         Con_Printf(CON_WARN "Warning: Could not expand $ in alias %s\n", alias->name);
1273                 else
1274                         Con_Printf(CON_WARN "Warning: Could not expand $\n");
1275                 return "$";
1276         }
1277
1278         if(varfunc)
1279         {
1280                 char *p;
1281                 // ? means optional
1282                 while((p = strchr(varfunc, '?')))
1283                 {
1284                         optional = true;
1285                         memmove(p, p+1, strlen(p)); // with final NUL
1286                 }
1287                 // ! means required
1288                 while((p = strchr(varfunc, '!')))
1289                 {
1290                         required = true;
1291                         memmove(p, p+1, strlen(p)); // with final NUL
1292                 }
1293                 // kill spaces
1294                 while((p = strchr(varfunc, ' ')))
1295                 {
1296                         memmove(p, p+1, strlen(p)); // with final NUL
1297                 }
1298                 // if no function is left, NULL it
1299                 if(!*varfunc)
1300                         varfunc = NULL;
1301         }
1302
1303         if(varname[0] == '$')
1304                 varstr = Cmd_GetDirectCvarValue(cmd, Cmd_GetDirectCvarValue(cmd, varname + 1, alias, NULL), alias, NULL);
1305         else
1306         {
1307                 qbool is_multiple = false;
1308                 // Exception: $* and $n- don't use the quoted form by default
1309                 varstr = Cmd_GetDirectCvarValue(cmd, varname, alias, &is_multiple);
1310                 if(is_multiple)
1311                         if(!varfunc)
1312                                 varfunc = asis;
1313         }
1314
1315         if(!varstr)
1316         {
1317                 if(required)
1318                 {
1319                         if(alias)
1320                                 Con_Printf(CON_ERROR "Error: Could not expand $%s in alias %s\n", varname, alias->name);
1321                         else
1322                                 Con_Printf(CON_ERROR "Error: Could not expand $%s\n", varname);
1323                         return NULL;
1324                 }
1325                 else if(optional)
1326                 {
1327                         return "";
1328                 }
1329                 else
1330                 {
1331                         if(alias)
1332                                 Con_Printf(CON_WARN "Warning: Could not expand $%s in alias %s\n", varname, alias->name);
1333                         else
1334                                 Con_Printf(CON_WARN "Warning: Could not expand $%s\n", varname);
1335                         dpsnprintf(varval, sizeof(varval), "$%s", varname);
1336                         return varval;
1337                 }
1338         }
1339
1340         if(!varfunc || !strcmp(varfunc, "q")) // note: quoted form is default, use "asis" to override!
1341         {
1342                 // quote it so it can be used inside double quotes
1343                 // we just need to replace " by \", and of course, double backslashes
1344                 Cmd_QuoteString(varval, sizeof(varval), varstr, "\"\\", false);
1345                 return varval;
1346         }
1347         else if(!strcmp(varfunc, "asis"))
1348         {
1349                 return varstr;
1350         }
1351         else
1352                 Con_Printf("Unknown variable function %s\n", varfunc);
1353
1354         return varstr;
1355 }
1356
1357 /*
1358 Cmd_PreprocessString
1359
1360 Preprocesses strings and replaces $*, $param#, $cvar accordingly. Also strips comments.
1361 */
1362 static qbool Cmd_PreprocessString(cmd_state_t *cmd, const char *intext, char *outtext, unsigned maxoutlen, cmd_alias_t *alias ) {
1363         const char *in;
1364         size_t eat, varlen;
1365         unsigned outlen;
1366         const char *val;
1367
1368         // don't crash if there's no room in the outtext buffer
1369         if( maxoutlen == 0 ) {
1370                 return false;
1371         }
1372         maxoutlen--; // because of \0
1373
1374         in = intext;
1375         outlen = 0;
1376
1377         while( *in && outlen < maxoutlen ) {
1378                 if( *in == '$' ) {
1379                         // this is some kind of expansion, see what comes after the $
1380                         in++;
1381
1382                         // The console does the following preprocessing:
1383                         //
1384                         // - $$ is transformed to a single dollar sign.
1385                         // - $var or ${var} are expanded to the contents of the named cvar,
1386                         //   with quotation marks and backslashes quoted so it can safely
1387                         //   be used inside quotation marks (and it should always be used
1388                         //   that way)
1389                         // - ${var asis} inserts the cvar value as is, without doing this
1390                         //   quoting
1391                         // - ${var ?} silently expands to the empty string if
1392                         //   $var does not exist
1393                         // - ${var !} fails expansion and executes nothing if
1394                         //   $var does not exist
1395                         // - prefix the cvar name with a dollar sign to do indirection;
1396                         //   for example, if $x has the value timelimit, ${$x} will return
1397                         //   the value of $timelimit
1398                         // - when expanding an alias, the special variable name $* refers
1399                         //   to all alias parameters, and a number refers to that numbered
1400                         //   alias parameter, where the name of the alias is $0, the first
1401                         //   parameter is $1 and so on; as a special case, $* inserts all
1402                         //   parameters, without extra quoting, so one can use $* to just
1403                         //   pass all parameters around. All parameters starting from $n
1404                         //   can be referred to as $n- (so $* is equivalent to $1-).
1405                         // - ${* q} and ${n- q} force quoting anyway
1406                         //
1407                         // Note: when expanding an alias, cvar expansion is done in the SAME step
1408                         // as alias expansion so that alias parameters or cvar values containing
1409                         // dollar signs have no unwanted bad side effects. However, this needs to
1410                         // be accounted for when writing complex aliases. For example,
1411                         //   alias foo "set x NEW; echo $x"
1412                         // actually expands to
1413                         //   "set x NEW; echo OLD"
1414                         // and will print OLD! To work around this, use a second alias:
1415                         //   alias foo "set x NEW; foo2"
1416                         //   alias foo2 "echo $x"
1417                         //
1418                         // Also note: lines starting with alias are exempt from cvar expansion.
1419                         // If you want cvar expansion, write "alias" instead:
1420                         //
1421                         //   set x 1
1422                         //   alias foo "echo $x"
1423                         //   "alias" bar "echo $x"
1424                         //   set x 2
1425                         //
1426                         // foo will print 2, because the variable $x will be expanded when the alias
1427                         // gets expanded. bar will print 1, because the variable $x was expanded
1428                         // at definition time. foo can be equivalently defined as
1429                         //
1430                         //   "alias" foo "echo $$x"
1431                         //
1432                         // because at definition time, $$ will get replaced to a single $.
1433
1434                         if( *in == '$' ) {
1435                                 val = "$";
1436                                 eat = 1;
1437                         } else if(*in == '{') {
1438                                 varlen = strcspn(in + 1, "}");
1439                                 if(in[varlen + 1] == '}')
1440                                 {
1441                                         val = Cmd_GetCvarValue(cmd, in + 1, varlen, alias);
1442                                         if(!val)
1443                                                 return false;
1444                                         eat = varlen + 2;
1445                                 }
1446                                 else
1447                                 {
1448                                         // ran out of data?
1449                                         val = NULL;
1450                                         eat = varlen + 1;
1451                                 }
1452                         } else {
1453                                 varlen = strspn(in, "#*0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-");
1454                                 val = Cmd_GetCvarValue(cmd, in, varlen, alias);
1455                                 if(!val)
1456                                         return false;
1457                                 eat = varlen;
1458                         }
1459                         if(val)
1460                         {
1461                                 // insert the cvar value
1462                                 while(*val && outlen < maxoutlen)
1463                                         outtext[outlen++] = *val++;
1464                                 in += eat;
1465                         }
1466                         else
1467                         {
1468                                 // copy the unexpanded text
1469                                 outtext[outlen++] = '$';
1470                                 while(eat && outlen < maxoutlen)
1471                                 {
1472                                         outtext[outlen++] = *in++;
1473                                         --eat;
1474                                 }
1475                         }
1476                 }
1477                 else
1478                         outtext[outlen++] = *in++;
1479         }
1480         outtext[outlen] = 0;
1481         return true;
1482 }
1483
1484 /*
1485 ============
1486 Cmd_ExecuteAlias
1487
1488 Called for aliases and fills in the alias into the cbuffer
1489 ============
1490 */
1491 static void Cmd_ExecuteAlias (cmd_state_t *cmd, cmd_alias_t *alias)
1492 {
1493         static char buffer[ MAX_INPUTLINE ]; // cmd_mutex
1494         static char buffer2[ MAX_INPUTLINE ]; // cmd_mutex
1495         qbool ret = Cmd_PreprocessString( cmd, alias->value, buffer, sizeof(buffer) - 2, alias );
1496         if(!ret)
1497                 return;
1498         // insert at start of command buffer, so that aliases execute in order
1499         // (fixes bug introduced by Black on 20050705)
1500
1501         // Note: Cbuf_PreprocessString will be called on this string AGAIN! So we
1502         // have to make sure that no second variable expansion takes place, otherwise
1503         // alias parameters containing dollar signs can have bad effects.
1504         Cmd_QuoteString(buffer2, sizeof(buffer2), buffer, "$", false);
1505         Cbuf_InsertText(cmd, buffer2);
1506 }
1507
1508 /*
1509 ========
1510 Cmd_List
1511
1512         CmdList Added by EvilTypeGuy eviltypeguy@qeradiant.com
1513         Thanks to Matthias "Maddes" Buecher, http://www.inside3d.com/qip/
1514
1515 ========
1516 */
1517 static void Cmd_List_f (cmd_state_t *cmd)
1518 {
1519         cmd_function_t *func;
1520         const char *partial;
1521         size_t len;
1522         int count;
1523         qbool ispattern;
1524
1525         if (Cmd_Argc(cmd) > 1)
1526         {
1527                 partial = Cmd_Argv(cmd, 1);
1528                 len = strlen(partial);
1529                 ispattern = (strchr(partial, '*') || strchr(partial, '?'));
1530         }
1531         else
1532         {
1533                 partial = NULL;
1534                 len = 0;
1535                 ispattern = false;
1536         }
1537
1538         count = 0;
1539         for (func = cmd->userdefined->qc_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         for (func = cmd->engine_functions; func; func = func->next)
1547         {
1548                 if (partial && (ispattern ? !matchpattern_with_separator(func->name, partial, false, "", false) : strncmp(partial, func->name, len)))
1549                         continue;
1550                 Con_Printf("%s : %s\n", func->name, func->description);
1551                 count++;
1552         }
1553
1554         if (len)
1555         {
1556                 if(ispattern)
1557                         Con_Printf("%i Command%s matching \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
1558                 else
1559                         Con_Printf("%i Command%s beginning with \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
1560         }
1561         else
1562                 Con_Printf("%i Command%s\n\n", count, (count > 1) ? "s" : "");
1563 }
1564
1565 static void Cmd_Apropos_f(cmd_state_t *cmd)
1566 {
1567         cmd_function_t *func;
1568         cvar_t *cvar;
1569         cmd_alias_t *alias;
1570         const char *partial;
1571         int count;
1572         qbool ispattern;
1573         char vabuf[1024];
1574
1575         if (Cmd_Argc(cmd) > 1)
1576                 partial = Cmd_Args(cmd);
1577         else
1578         {
1579                 Con_Printf("usage: %s <string>\n",Cmd_Argv(cmd, 0));
1580                 return;
1581         }
1582
1583         ispattern = partial && (strchr(partial, '*') || strchr(partial, '?'));
1584         if(!ispattern)
1585                 partial = va(vabuf, sizeof(vabuf), "*%s*", partial);
1586
1587         count = 0;
1588         for (cvar = cmd->cvars->vars; cvar; cvar = cvar->next)
1589         {
1590                 if (matchpattern_with_separator(cvar->name, partial, true, "", false) ||
1591                     matchpattern_with_separator(cvar->description, partial, true, "", false))
1592                 {
1593                         Con_Printf ("cvar ");
1594                         Cvar_PrintHelp(cvar, cvar->name, true);
1595                         count++;
1596                 }
1597                 for (int i = 0; i < cvar->aliasindex; i++)
1598                 {
1599                         if (matchpattern_with_separator(cvar->aliases[i], partial, true, "", false))
1600                         {
1601                                 Con_Printf ("cvar ");
1602                                 Cvar_PrintHelp(cvar, cvar->aliases[i], true);
1603                                 count++;
1604                         }
1605                 }
1606         }
1607         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1608         {
1609                 if (!matchpattern_with_separator(func->name, partial, true, "", false))
1610                         if (!matchpattern_with_separator(func->description, partial, true, "", false))
1611                                 continue;
1612                 Con_Printf("command ^2%s^7: %s\n", func->name, func->description);
1613                 count++;
1614         }
1615         for (func = cmd->engine_functions; func; func = func->next)
1616         {
1617                 if (!matchpattern_with_separator(func->name, partial, true, "", false))
1618                 if (!matchpattern_with_separator(func->description, partial, true, "", false))
1619                         continue;
1620                 Con_Printf("command ^2%s^7: %s\n", func->name, func->description);
1621                 count++;
1622         }
1623         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
1624         {
1625                 // procede here a bit differently as an alias value always got a final \n
1626                 if (!matchpattern_with_separator(alias->name, partial, true, "", false))
1627                 if (!matchpattern_with_separator(alias->value, partial, true, "\n", false)) // when \n is as separator wildcards don't match it
1628                         continue;
1629                 Con_Printf("alias ^5%s^7: %s", alias->name, alias->value); // do not print an extra \n
1630                 count++;
1631         }
1632         Con_Printf("%i result%s\n\n", count, (count > 1) ? "s" : "");
1633 }
1634
1635 static cmd_state_t *Cmd_AddInterpreter(cmd_buf_t *cbuf, cvar_state_t *cvars, int cvars_flagsmask, int cmds_flagsmask, cmd_userdefined_t *userdefined)
1636 {
1637         cmd_state_t *cmd = (cmd_state_t *)Mem_Alloc(tempmempool, sizeof(cmd_state_t));
1638
1639         cmd->mempool = Mem_AllocPool("commands", 0, NULL);
1640         // space for commands and script files
1641         cmd->cbuf = cbuf;
1642         cmd->null_string = "";
1643
1644         cmd->cvars = cvars;
1645         cmd->cvars_flagsmask = cvars_flagsmask;
1646         cmd->cmd_flags = cmds_flagsmask;
1647         cmd->userdefined = userdefined;
1648
1649         return cmd;
1650 }
1651
1652 /*
1653 ============
1654 Cmd_Init
1655 ============
1656 */
1657 void Cmd_Init(void)
1658 {
1659         cmd_buf_t *cbuf;
1660         cbuf_mempool = Mem_AllocPool("Command buffer", 0, NULL);
1661         cbuf = (cmd_buf_t *)Mem_Alloc(cbuf_mempool, sizeof(cmd_buf_t));
1662         cbuf->maxsize = 655360;
1663         cbuf->lock = Thread_CreateMutex();
1664         cbuf->wait = false;
1665         host.cbuf = cbuf;
1666
1667         cbuf->start.prev = cbuf->start.next = &(cbuf->start);
1668         cbuf->deferred.prev = cbuf->deferred.next = &(cbuf->deferred);
1669         cbuf->free.prev = cbuf->free.next = &(cbuf->free);
1670
1671         // FIXME: Get rid of cmd_iter_all eventually. This is just a hack to reduce the amount of work to make the interpreters dynamic.
1672         cmd_iter_all = (cmd_iter_t *)Mem_Alloc(tempmempool, sizeof(cmd_iter_t) * 3);
1673
1674         // local console
1675         cmd_iter_all[0].cmd = cmd_local = Cmd_AddInterpreter(cbuf, &cvars_all, CF_CLIENT | CF_SERVER, CF_CLIENT | CF_CLIENT_FROM_SERVER | CF_SERVER_FROM_CLIENT, &cmd_userdefined_all);
1676         cmd_local->Handle = Cmd_CL_Callback;
1677         cmd_local->NotFound = NULL;
1678
1679         // server commands received from clients have no reason to access cvars, cvar expansion seems perilous.
1680         cmd_iter_all[1].cmd = cmd_serverfromclient = Cmd_AddInterpreter(cbuf, &cvars_null, 0, CF_SERVER_FROM_CLIENT | CF_USERINFO, &cmd_userdefined_null);
1681         cmd_serverfromclient->Handle = Cmd_SV_Callback;
1682         cmd_serverfromclient->NotFound = Cmd_SV_NotFound;
1683
1684         cmd_iter_all[2].cmd = NULL;
1685 //
1686 // register our commands
1687 //
1688         // client-only commands
1689         Cmd_AddCommand(CF_SHARED, "wait", Cmd_Wait_f, "make script execution wait for next rendered frame");
1690         Cmd_AddCommand(CF_CLIENT, "cprint", Cmd_Centerprint_f, "print something at the screen center");
1691
1692         // maintenance commands used for upkeep of cvars and saved configs
1693         Cmd_AddCommand(CF_SHARED, "stuffcmds", Cmd_StuffCmds_f, "execute commandline parameters (must be present in quake.rc script)");
1694         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");
1695         Cmd_AddCommand(CF_SHARED, "cvar_resettodefaults_all", Cvar_ResetToDefaults_All_f, "sets all cvars to their locked default values");
1696         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)");
1697         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)");
1698
1699         // general console commands used in multiple environments
1700         Cmd_AddCommand(CF_SHARED, "exec", Cmd_Exec_f, "execute a script file");
1701         Cmd_AddCommand(CF_SHARED, "echo",Cmd_Echo_f, "print a message to the console (useful in scripts)");
1702         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");
1703         Cmd_AddCommand(CF_SHARED, "unalias",Cmd_UnAlias_f, "remove an alias");
1704         Cmd_AddCommand(CF_SHARED, "set", Cvar_Set_f, "create or change the value of a console variable");
1705         Cmd_AddCommand(CF_SHARED, "seta", Cvar_SetA_f, "create or change the value of a console variable that will be saved to config.cfg");
1706         Cmd_AddCommand(CF_SHARED, "unset", Cvar_Del_f, "delete a cvar (does not work for static ones like _cl_name, or read-only ones)");
1707
1708 #ifdef FILLALLCVARSWITHRUBBISH
1709         Cmd_AddCommand(CF_SHARED, "fillallcvarswithrubbish", Cvar_FillAll_f, "fill all cvars with a specified number of characters to provoke buffer overruns");
1710 #endif /* FILLALLCVARSWITHRUBBISH */
1711
1712         // 2000-01-09 CmdList, CvarList commands By Matthias "Maddes" Buecher
1713         // Added/Modified by EvilTypeGuy eviltypeguy@qeradiant.com
1714         Cmd_AddCommand(CF_SHARED, "cmdlist", Cmd_List_f, "lists all console commands beginning with the specified prefix or matching the specified wildcard pattern");
1715         Cmd_AddCommand(CF_SHARED, "cvarlist", Cvar_List_f, "lists all console variables beginning with the specified prefix or matching the specified wildcard pattern");
1716         Cmd_AddCommand(CF_SHARED, "apropos", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");
1717         Cmd_AddCommand(CF_SHARED, "find", Cmd_Apropos_f, "lists all console variables/commands/aliases containing the specified string in the name or description");
1718
1719         Cmd_AddCommand(CF_SHARED, "defer", Cmd_Defer_f, "execute a command in the future");
1720
1721         // DRESK - 5/14/06
1722         // Support Doom3-style Toggle Command
1723         Cmd_AddCommand(CF_SHARED | CF_CLIENT_FROM_SERVER, "toggle", Cmd_Toggle_f, "toggles a console variable's values (use for more info)");
1724 }
1725
1726 /*
1727 ============
1728 Cmd_Shutdown
1729 ============
1730 */
1731 void Cmd_Shutdown(void)
1732 {
1733         cmd_iter_t *cmd_iter;
1734         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
1735         {
1736                 cmd_state_t *cmd = cmd_iter->cmd;
1737
1738                 if (cmd->cbuf->lock)
1739                 {
1740                         // we usually have this locked when we get here from Host_Quit_f
1741                         Cbuf_Unlock(cmd->cbuf);
1742                 }
1743
1744                 Mem_FreePool(&cmd->mempool);
1745         }
1746 }
1747
1748 /*
1749 ============
1750 Cmd_Argc
1751 ============
1752 */
1753 int             Cmd_Argc (cmd_state_t *cmd)
1754 {
1755         return cmd->argc;
1756 }
1757
1758 /*
1759 ============
1760 Cmd_Argv
1761 ============
1762 */
1763 const char *Cmd_Argv(cmd_state_t *cmd, int arg)
1764 {
1765         if (arg >= cmd->argc )
1766                 return cmd->null_string;
1767         return cmd->argv[arg];
1768 }
1769
1770 /*
1771 ============
1772 Cmd_Args
1773 ============
1774 */
1775 const char *Cmd_Args (cmd_state_t *cmd)
1776 {
1777         return cmd->args;
1778 }
1779
1780 /*
1781 ============
1782 Cmd_TokenizeString
1783
1784 Parses the given string into command line tokens.
1785 ============
1786 */
1787 // AK: This function should only be called from ExcuteString because the current design is a bit of an hack
1788 static void Cmd_TokenizeString (cmd_state_t *cmd, const char *text)
1789 {
1790         int l;
1791
1792         cmd->argc = 0;
1793         cmd->args = NULL;
1794         cmd->cmdline = NULL;
1795
1796         while (1)
1797         {
1798                 // skip whitespace up to a /n
1799                 while (*text && ISWHITESPACE(*text) && *text != '\r' && *text != '\n')
1800                         text++;
1801
1802                 // line endings:
1803                 // UNIX: \n
1804                 // Mac: \r
1805                 // Windows: \r\n
1806                 if (*text == '\n' || *text == '\r')
1807                 {
1808                         // a newline separates commands in the buffer
1809                         if (*text == '\r' && text[1] == '\n')
1810                                 text++;
1811                         text++;
1812                         break;
1813                 }
1814
1815                 if (!*text)
1816                         return;
1817
1818                 if(!cmd->argc)
1819                         cmd->cmdline = text;
1820                 if (cmd->argc == 1)
1821                         cmd->args = text;
1822
1823                 if (!COM_ParseToken_Console(&text))
1824                         return;
1825
1826                 if (cmd->argc < MAX_ARGS)
1827                 {
1828                         l = (int)strlen(com_token) + 1;
1829                         if (cmd->cbuf->tokenizebufferpos + l > CMD_TOKENIZELENGTH)
1830                         {
1831                                 Con_Printf("Cmd_TokenizeString: ran out of %i character buffer space for command arguments\n", CMD_TOKENIZELENGTH);
1832                                 break;
1833                         }
1834                         memcpy (cmd->cbuf->tokenizebuffer + cmd->cbuf->tokenizebufferpos, com_token, l);
1835                         cmd->argv[cmd->argc] = cmd->cbuf->tokenizebuffer + cmd->cbuf->tokenizebufferpos;
1836                         cmd->cbuf->tokenizebufferpos += l;
1837                         cmd->argc++;
1838                 }
1839         }
1840 }
1841
1842
1843 /*
1844 ============
1845 Cmd_AddCommand
1846 ============
1847 */
1848 void Cmd_AddCommand(int flags, const char *cmd_name, xcommand_t function, const char *description)
1849 {
1850         cmd_function_t *func;
1851         cmd_function_t *prev, *current;
1852         cmd_state_t *cmd;
1853         int i;
1854
1855         for (i = 0; i < 2; i++)
1856         {
1857                 cmd = cmd_iter_all[i].cmd;
1858                 if (flags & cmd->cmd_flags)
1859                 {
1860                         // fail if the command is a variable name
1861                         if (Cvar_FindVar(cmd->cvars, cmd_name, ~0))
1862                         {
1863                                 Con_Printf("Cmd_AddCommand: %s already defined as a var\n", cmd_name);
1864                                 return;
1865                         }
1866
1867                         if (function)
1868                         {
1869                                 // fail if the command already exists in this interpreter
1870                                 for (func = cmd->engine_functions; func; func = func->next)
1871                                 {
1872                                         if (!strcmp(cmd_name, func->name))
1873                                         {
1874                                                 Con_Printf("Cmd_AddCommand: %s already defined\n", cmd_name);
1875                                                 continue;
1876                                         }
1877                                 }
1878
1879                                 func = (cmd_function_t *)Mem_Alloc(cmd->mempool, sizeof(cmd_function_t));
1880                                 func->flags = flags;
1881                                 func->name = cmd_name;
1882                                 func->function = function;
1883                                 func->description = description;
1884                                 func->next = cmd->engine_functions;
1885
1886                                 // insert it at the right alphanumeric position
1887                                 for (prev = NULL, current = cmd->engine_functions; current && strcmp(current->name, func->name) < 0; prev = current, current = current->next)
1888                                         ;
1889                                 if (prev) {
1890                                         prev->next = func;
1891                                 }
1892                                 else {
1893                                         cmd->engine_functions = func;
1894                                 }
1895                                 func->next = current;
1896                         }
1897                         else
1898                         {
1899                                 // mark qcfunc if the function already exists in the qc_functions list
1900                                 for (func = cmd->userdefined->qc_functions; func; func = func->next)
1901                                 {
1902                                         if (!strcmp(cmd_name, func->name))
1903                                         {
1904                                                 func->qcfunc = true; //[515]: csqc
1905                                                 continue;
1906                                         }
1907                                 }
1908
1909
1910                                 func = (cmd_function_t *)Mem_Alloc(cmd->mempool, sizeof(cmd_function_t));
1911                                 func->flags = flags;
1912                                 func->name = cmd_name;
1913                                 func->function = function;
1914                                 func->description = description;
1915                                 func->qcfunc = true; //[515]: csqc
1916                                 func->next = cmd->userdefined->qc_functions;
1917
1918                                 // insert it at the right alphanumeric position
1919                                 for (prev = NULL, current = cmd->userdefined->qc_functions; current && strcmp(current->name, func->name) < 0; prev = current, current = current->next)
1920                                         ;
1921                                 if (prev) {
1922                                         prev->next = func;
1923                                 }
1924                                 else {
1925                                         cmd->userdefined->qc_functions = func;
1926                                 }
1927                                 func->next = current;
1928                         }
1929                 }
1930         }
1931 }
1932
1933 /*
1934 ============
1935 Cmd_Exists
1936 ============
1937 */
1938 qbool Cmd_Exists (cmd_state_t *cmd, const char *cmd_name)
1939 {
1940         cmd_function_t  *func;
1941
1942         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1943                 if (!strcmp(cmd_name, func->name))
1944                         return true;
1945
1946         for (func=cmd->engine_functions ; func ; func=func->next)
1947                 if (!strcmp (cmd_name,func->name))
1948                         return true;
1949
1950         return false;
1951 }
1952
1953
1954 /*
1955 ============
1956 Cmd_CompleteCommand
1957 ============
1958 */
1959 const char *Cmd_CompleteCommand (cmd_state_t *cmd, const char *partial)
1960 {
1961         cmd_function_t *func;
1962         size_t len;
1963
1964         len = strlen(partial);
1965
1966         if (!len)
1967                 return NULL;
1968
1969 // check functions
1970         for (func = cmd->userdefined->qc_functions; func; func = func->next)
1971                 if (!strncasecmp(partial, func->name, len))
1972                         return func->name;
1973
1974         for (func = cmd->engine_functions; func; func = func->next)
1975                 if (!strncasecmp(partial, func->name, len))
1976                         return func->name;
1977
1978         return NULL;
1979 }
1980
1981 /*
1982         Cmd_CompleteCountPossible
1983
1984         New function for tab-completion system
1985         Added by EvilTypeGuy
1986         Thanks to Fett erich@heintz.com
1987         Thanks to taniwha
1988
1989 */
1990 int Cmd_CompleteCountPossible (cmd_state_t *cmd, const char *partial)
1991 {
1992         cmd_function_t *func;
1993         size_t len;
1994         int h;
1995
1996         h = 0;
1997         len = strlen(partial);
1998
1999         if (!len)
2000                 return 0;
2001
2002         // Loop through the command list and count all partial matches
2003         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2004                 if (!strncasecmp(partial, func->name, len))
2005                         h++;
2006
2007         for (func = cmd->engine_functions; func; func = func->next)
2008                 if (!strncasecmp(partial, func->name, len))
2009                         h++;
2010
2011         return h;
2012 }
2013
2014 /*
2015         Cmd_CompleteBuildList
2016
2017         New function for tab-completion system
2018         Added by EvilTypeGuy
2019         Thanks to Fett erich@heintz.com
2020         Thanks to taniwha
2021
2022 */
2023 const char **Cmd_CompleteBuildList (cmd_state_t *cmd, const char *partial)
2024 {
2025         cmd_function_t *func;
2026         size_t len = 0;
2027         size_t bpos = 0;
2028         size_t sizeofbuf = (Cmd_CompleteCountPossible (cmd, partial) + 1) * sizeof (const char *);
2029         const char **buf;
2030
2031         len = strlen(partial);
2032         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
2033         // Loop through the functions lists and print all matches
2034         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2035                 if (!strncasecmp(partial, func->name, len))
2036                         buf[bpos++] = func->name;
2037         for (func = cmd->engine_functions; func; func = func->next)
2038                 if (!strncasecmp(partial, func->name, len))
2039                         buf[bpos++] = func->name;
2040
2041         buf[bpos] = NULL;
2042         return buf;
2043 }
2044
2045 // written by LadyHavoc
2046 void Cmd_CompleteCommandPrint (cmd_state_t *cmd, const char *partial)
2047 {
2048         cmd_function_t *func;
2049         size_t len = strlen(partial);
2050         // Loop through the command list and print all matches
2051         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2052                 if (!strncasecmp(partial, func->name, len))
2053                         Con_Printf("^2%s^7: %s\n", func->name, func->description);
2054         for (func = cmd->engine_functions; func; func = func->next)
2055                 if (!strncasecmp(partial, func->name, len))
2056                         Con_Printf("^2%s^7: %s\n", func->name, func->description);
2057 }
2058
2059 /*
2060         Cmd_CompleteAlias
2061
2062         New function for tab-completion system
2063         Added by EvilTypeGuy
2064         Thanks to Fett erich@heintz.com
2065         Thanks to taniwha
2066
2067 */
2068 const char *Cmd_CompleteAlias (cmd_state_t *cmd, const char *partial)
2069 {
2070         cmd_alias_t *alias;
2071         size_t len;
2072
2073         len = strlen(partial);
2074
2075         if (!len)
2076                 return NULL;
2077
2078         // Check functions
2079         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2080                 if (!strncasecmp(partial, alias->name, len))
2081                         return alias->name;
2082
2083         return NULL;
2084 }
2085
2086 // written by LadyHavoc
2087 void Cmd_CompleteAliasPrint (cmd_state_t *cmd, const char *partial)
2088 {
2089         cmd_alias_t *alias;
2090         size_t len = strlen(partial);
2091         // Loop through the alias list and print all matches
2092         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2093                 if (!strncasecmp(partial, alias->name, len))
2094                         Con_Printf("^5%s^7: %s", alias->name, alias->value);
2095 }
2096
2097
2098 /*
2099         Cmd_CompleteAliasCountPossible
2100
2101         New function for tab-completion system
2102         Added by EvilTypeGuy
2103         Thanks to Fett erich@heintz.com
2104         Thanks to taniwha
2105
2106 */
2107 int Cmd_CompleteAliasCountPossible (cmd_state_t *cmd, const char *partial)
2108 {
2109         cmd_alias_t     *alias;
2110         size_t          len;
2111         int                     h;
2112
2113         h = 0;
2114
2115         len = strlen(partial);
2116
2117         if (!len)
2118                 return 0;
2119
2120         // Loop through the command list and count all partial matches
2121         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2122                 if (!strncasecmp(partial, alias->name, len))
2123                         h++;
2124
2125         return h;
2126 }
2127
2128 /*
2129         Cmd_CompleteAliasBuildList
2130
2131         New function for tab-completion system
2132         Added by EvilTypeGuy
2133         Thanks to Fett erich@heintz.com
2134         Thanks to taniwha
2135
2136 */
2137 const char **Cmd_CompleteAliasBuildList (cmd_state_t *cmd, const char *partial)
2138 {
2139         cmd_alias_t *alias;
2140         size_t len = 0;
2141         size_t bpos = 0;
2142         size_t sizeofbuf = (Cmd_CompleteAliasCountPossible (cmd, partial) + 1) * sizeof (const char *);
2143         const char **buf;
2144
2145         len = strlen(partial);
2146         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
2147         // Loop through the alias list and print all matches
2148         for (alias = cmd->userdefined->alias; alias; alias = alias->next)
2149                 if (!strncasecmp(partial, alias->name, len))
2150                         buf[bpos++] = alias->name;
2151
2152         buf[bpos] = NULL;
2153         return buf;
2154 }
2155
2156 // TODO: Make this more generic?
2157 void Cmd_ClearCSQCCommands (cmd_state_t *cmd)
2158 {
2159         cmd_function_t *func;
2160         cmd_function_t **next = &cmd->userdefined->qc_functions;
2161
2162         while(*next)
2163         {
2164                 func = *next;
2165                 *next = func->next;
2166                 Z_Free(func);
2167         }
2168 }
2169
2170 extern cvar_t sv_cheats;
2171
2172 /*
2173  * Cloudwalk FIXME: This idea sounded great in my head but...
2174  * How do we handle commands that can be received by the client,
2175  * but which the server can also execute locally?
2176  *
2177  * If we create a callback where the engine will forward to server
2178  * but try to execute the command locally if it's dedicated,
2179  * we're back to intermixing client and server code which I'm
2180  * trying to avoid. There's no other way I can think of to
2181  * implement that behavior that doesn't involve an #ifdef, or
2182  * making a mess of hooks.
2183  */
2184 qbool Cmd_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2185 {
2186         if (func->function)
2187                 func->function(cmd);
2188         else
2189                 Con_Printf("Command \"%s\" can not be executed\n", Cmd_Argv(cmd, 0));
2190         return true;
2191 }
2192
2193 qbool Cmd_CL_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2194 {
2195         // TODO: Assign these functions to QC commands directly?
2196         if(func->qcfunc)
2197         {
2198                 if(((func->flags & CF_CLIENT) && CL_VM_ConsoleCommand(text)) ||
2199                    ((func->flags & CF_SERVER) && SV_VM_ConsoleCommand(text)))
2200                         return true;
2201         }
2202         if (func->flags & CF_SERVER_FROM_CLIENT)
2203         {
2204                 if(host_isclient.integer)
2205                 {
2206                         CL_ForwardToServer_f(cmd);
2207                         return true;
2208                 }
2209                 else if(!(func->flags & CF_SERVER))
2210                 {
2211                         Con_Printf("Cannot execute client commands from a dedicated server console.\n");
2212                         return true;
2213                 }
2214         }
2215         return Cmd_Callback(cmd, func, text, src);
2216 }
2217
2218 qbool Cmd_SV_Callback(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2219 {
2220         if(func->qcfunc && (func->flags & CF_SERVER))
2221                 return SV_VM_ConsoleCommand(text);
2222         else if (src == src_client)
2223         {
2224                 if((func->flags & CF_CHEAT) && !sv_cheats.integer)
2225                         SV_ClientPrintf("No cheats allowed. The server must have sv_cheats set to 1\n");
2226                 else
2227                         func->function(cmd);
2228                 return true;
2229         }
2230         return false;
2231 }
2232
2233 qbool Cmd_SV_NotFound(cmd_state_t *cmd, cmd_function_t *func, const char *text, cmd_source_t src)
2234 {
2235         if (cmd->source == src_client)
2236         {
2237                 Con_Printf("Client \"%s\" tried to execute \"%s\"\n", host_client->name, text);
2238                 return true;
2239         }
2240         return false;
2241 }
2242 /*
2243 ============
2244 Cmd_ExecuteString
2245
2246 A complete command line has been parsed, so try to execute it
2247 FIXME: lookupnoadd the token to speed search?
2248 ============
2249 */
2250 void Cmd_ExecuteString (cmd_state_t *cmd, const char *text, cmd_source_t src, qbool lockmutex)
2251 {
2252         int oldpos;
2253         cmd_function_t *func;
2254         cmd_alias_t *a;
2255         if (lockmutex)
2256                 Cbuf_Lock(cmd->cbuf);
2257         oldpos = cmd->cbuf->tokenizebufferpos;
2258         cmd->source = src;
2259
2260         Cmd_TokenizeString (cmd, text);
2261
2262 // execute the command line
2263         if (!Cmd_Argc(cmd))
2264                 goto done; // no tokens
2265
2266 // check functions
2267         for (func = cmd->userdefined->qc_functions; func; func = func->next)
2268         {
2269                 if (!strcasecmp(cmd->argv[0], func->name))
2270                 {
2271                         if(cmd->Handle(cmd, func, text, src))
2272                                 goto done;
2273                 }
2274         }
2275
2276         for (func = cmd->engine_functions; func; func=func->next)
2277         {
2278                 if (!strcasecmp (cmd->argv[0], func->name))
2279                 {
2280                         if(cmd->Handle(cmd, func, text, src))
2281                                 goto done;
2282                 }
2283         }
2284
2285         // if it's a client command and no command was found, say so.
2286         if(cmd->NotFound)
2287         {
2288                 if(cmd->NotFound(cmd, func, text, src))
2289                         goto done;
2290         }
2291
2292 // check alias
2293         for (a=cmd->userdefined->alias ; a ; a=a->next)
2294         {
2295                 if (!strcasecmp (cmd->argv[0], a->name))
2296                 {
2297                         Cmd_ExecuteAlias(cmd, a);
2298                         goto done;
2299                 }
2300         }
2301
2302 // check cvars
2303         if (!Cvar_Command(cmd) && host.framecount > 0)
2304                 Con_Printf("Unknown command \"%s\"\n", Cmd_Argv(cmd, 0));
2305 done:
2306         cmd->cbuf->tokenizebufferpos = oldpos;
2307         if (lockmutex)
2308                 Cbuf_Unlock(cmd->cbuf);
2309 }
2310
2311 /*
2312 ================
2313 Cmd_CheckParm
2314
2315 Returns the position (1 to argc-1) in the command's argument list
2316 where the given parameter apears, or 0 if not present
2317 ================
2318 */
2319
2320 int Cmd_CheckParm (cmd_state_t *cmd, const char *parm)
2321 {
2322         int i;
2323
2324         if (!parm)
2325         {
2326                 Con_Printf ("Cmd_CheckParm: NULL");
2327                 return 0;
2328         }
2329
2330         for (i = 1; i < Cmd_Argc (cmd); i++)
2331                 if (!strcasecmp (parm, Cmd_Argv(cmd, i)))
2332                         return i;
2333
2334         return 0;
2335 }
2336
2337
2338
2339 void Cmd_SaveInitState(void)
2340 {
2341         cmd_iter_t *cmd_iter;
2342         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
2343         {
2344                 cmd_state_t *cmd = cmd_iter->cmd;
2345                 cmd_function_t *f;
2346                 cmd_alias_t *a;
2347                 for (f = cmd->userdefined->qc_functions; f; f = f->next)
2348                         f->initstate = true;
2349                 for (f = cmd->engine_functions; f; f = f->next)
2350                         f->initstate = true;
2351                 for (a = cmd->userdefined->alias; a; a = a->next)
2352                 {
2353                         a->initstate = true;
2354                         a->initialvalue = Mem_strdup(zonemempool, a->value);
2355                 }
2356         }
2357         Cvar_SaveInitState(&cvars_all);
2358 }
2359
2360 void Cmd_RestoreInitState(void)
2361 {
2362         cmd_iter_t *cmd_iter;
2363         for (cmd_iter = cmd_iter_all; cmd_iter->cmd; cmd_iter++)
2364         {
2365                 cmd_state_t *cmd = cmd_iter->cmd;
2366                 cmd_function_t *f, **fp;
2367                 cmd_alias_t *a, **ap;
2368                 for (fp = &cmd->userdefined->qc_functions; (f = *fp);)
2369                 {
2370                         if (f->initstate)
2371                                 fp = &f->next;
2372                         else
2373                         {
2374                                 // destroy this command, it didn't exist at init
2375                                 Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
2376                                 *fp = f->next;
2377                                 Z_Free(f);
2378                         }
2379                 }
2380                 for (fp = &cmd->engine_functions; (f = *fp);)
2381                 {
2382                         if (f->initstate)
2383                                 fp = &f->next;
2384                         else
2385                         {
2386                                 // destroy this command, it didn't exist at init
2387                                 Con_DPrintf("Cmd_RestoreInitState: Destroying command %s\n", f->name);
2388                                 *fp = f->next;
2389                                 Z_Free(f);
2390                         }
2391                 }
2392                 for (ap = &cmd->userdefined->alias; (a = *ap);)
2393                 {
2394                         if (a->initstate)
2395                         {
2396                                 // restore this alias, it existed at init
2397                                 if (strcmp(a->value ? a->value : "", a->initialvalue ? a->initialvalue : ""))
2398                                 {
2399                                         Con_DPrintf("Cmd_RestoreInitState: Restoring alias %s\n", a->name);
2400                                         if (a->value)
2401                                                 Z_Free(a->value);
2402                                         a->value = Mem_strdup(zonemempool, a->initialvalue);
2403                                 }
2404                                 ap = &a->next;
2405                         }
2406                         else
2407                         {
2408                                 // free this alias, it didn't exist at init...
2409                                 Con_DPrintf("Cmd_RestoreInitState: Destroying alias %s\n", a->name);
2410                                 *ap = a->next;
2411                                 if (a->value)
2412                                         Z_Free(a->value);
2413                                 Z_Free(a);
2414                         }
2415                 }
2416         }
2417         Cvar_RestoreInitState(&cvars_all);
2418 }
2419
2420 void Cmd_NoOperation_f(cmd_state_t *cmd)
2421 {
2422 }