messages.c

   1 /* Copyright (c) 2012, Bastien Dejean
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * 1. Redistributions of source code must retain the above copyright notice, this
   8  *    list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright notice,
  10  *    this list of conditions and the following disclaimer in the documentation
  11  *    and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
  17  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  20  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  22  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdbool.h>
  29 #include <stdarg.h>
  30 #include <unistd.h>
  31 #include "bspwm.h"
  32 #include "desktop.h"
  33 #include "monitor.h"
  34 #include "pointer.h"
  35 #include "query.h"
  36 #include "rule.h"
  37 #include "restore.h"
  38 #include "settings.h"
  39 #include "tree.h"
  40 #include "window.h"
  41 #include "common.h"
  42 #include "parse.h"
  43 #include "messages.h"
  44
  45 void handle_message(char *msg, int msg_len, FILE *rsp)
  46 {
  47         int cap = INIT_CAP;
  48         int num = 0;
  49         char **args = malloc(cap * sizeof(char *));
  50
  51         if (args == NULL) {
  52                 perror("Handle message: malloc");
  53                 return;
  54         }
  55
  56         for (int i = 0, j = 0; i < msg_len; i++) {
  57                 if (msg[i] == 0) {
  58                         args[num++] = msg + j;
  59                         j = i + 1;
  60                 }
  61                 if (num >= cap) {
  62                         cap *= 2;
  63                         char **new = realloc(args, cap * sizeof(char *));
  64                         if (new == NULL) {
  65                                 free(args);
  66                                 perror("Handle message: realloc");
  67                                 return;
  68                         } else {
  69                                 args = new;
  70                         }
  71                 }
  72         }
  73
  74         if (num < 1) {
  75                 free(args);
  76                 fail(rsp, "No arguments given.\n");
  77                 return;
  78         }
  79
  80         char **args_orig = args;
  81         process_message(args, num, rsp);
  82         free(args_orig);
  83 }
  84
  85 void process_message(char **args, int num, FILE *rsp)
  86 {
  87         int ret = SUBSCRIBE_FAILURE;
  88
  89         if (streq("node", *args)) {
  90                 cmd_node(++args, --num, rsp);
  91         } else if (streq("desktop", *args)) {
  92                 cmd_desktop(++args, --num, rsp);
  93         } else if (streq("monitor", *args)) {
  94                 cmd_monitor(++args, --num, rsp);
  95         } else if (streq("query", *args)) {
  96                 cmd_query(++args, --num, rsp);
  97         } else if (streq("subscribe", *args)) {
  98                 ret = cmd_subscribe(++args, --num, rsp);
  99         } else if (streq("wm", *args)) {
 100                 cmd_wm(++args, --num, rsp);
 101         } else if (streq("rule", *args)) {
 102                 cmd_rule(++args, --num, rsp);
 103         } else if (streq("pointer", *args)) {
 104                 cmd_pointer(++args, --num, rsp);
 105         } else if (streq("config", *args)) {
 106                 cmd_config(++args, --num, rsp);
 107         } else if (streq("quit", *args)) {
 108                 cmd_quit(++args, --num, rsp);
 109         } else {
 110                 fail(rsp, "Unknown domain or command: '%s'.\n", *args);
 111         }
 112
 113         fflush(rsp);
 114
 115         if (ret != SUBSCRIBE_SUCCESS) {
 116                 fclose(rsp);
 117         }
 118 }
 119
 120 void cmd_node(char **args, int num, FILE *rsp)
 121 {
 122         if (num < 1) {
 123                 fail(rsp, "node: Missing commands.\n");
 124                 return;
 125         }
 126
 127         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 128         coordinates_t trg = ref;
 129
 130         if ((*args)[0] != OPT_CHR) {
 131                 int ret;
 132                 if ((ret = node_from_desc(*args, &ref, &trg)) == SELECTOR_OK) {
 133                         num--, args++;
 134                 } else {
 135                         handle_failure(ret, "node", *args, rsp);
 136                         return;
 137                 }
 138         }
 139
 140         bool changed = false;
 141
 142         while (num > 0) {
 143                 if (streq("-f", *args) || streq("--focus", *args)) {
 144                         coordinates_t dst = trg;
 145                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 146                                 num--, args++;
 147                                 int ret;
 148                                 if ((ret = node_from_desc(*args, &trg, &dst)) != SELECTOR_OK) {
 149                                         handle_failure(ret, "node -f", *args, rsp);
 150                                         break;
 151                                 }
 152                         }
 153                         if (!focus_node(dst.monitor, dst.desktop, dst.node)) {
 154                                 fail(rsp, "");
 155                                 break;
 156                         }
 157                 } else if (streq("-a", *args) || streq("--activate", *args)) {
 158                         coordinates_t dst = trg;
 159                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 160                                 num--, args++;
 161                                 int ret;
 162                                 if ((ret = node_from_desc(*args, &trg, &dst)) != SELECTOR_OK) {
 163                                         handle_failure(ret, "node -a", *args, rsp);
 164                                         break;
 165                                 }
 166                         }
 167                         if (dst.desktop == mon->desk) {
 168                                 fail(rsp, "");
 169                                 break;
 170                         }
 171                         if (!activate_node(dst.monitor, dst.desktop, dst.node)) {
 172                                 fail(rsp, "");
 173                                 break;
 174                         }
 175                 } else if (streq("-d", *args) || streq("--to-desktop", *args)) {
 176                         num--, args++;
 177                         if (num < 1) {
 178                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 179                                 break;
 180                         }
 181                         coordinates_t dst;
 182                         int ret;
 183                         if ((ret = desktop_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 184                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.desktop->focus)) {
 185                                         trg.monitor = dst.monitor;
 186                                         trg.desktop = dst.desktop;
 187                                 } else {
 188                                         fail(rsp, "");
 189                                         break;
 190                                 }
 191                         } else {
 192                                 handle_failure(ret, "node -d", *args, rsp);
 193                                 break;
 194                         }
 195                 } else if (streq("-m", *args) || streq("--to-monitor", *args)) {
 196                         num--, args++;
 197                         if (num < 1) {
 198                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 199                                 break;
 200                         }
 201                         coordinates_t dst;
 202                         int ret;
 203                         if ((ret = monitor_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 204                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.monitor->desk, dst.monitor->desk->focus)) {
 205                                         trg.monitor = dst.monitor;
 206                                         trg.desktop = dst.monitor->desk;
 207                                 } else {
 208                                         fail(rsp, "");
 209                                         break;
 210                                 }
 211                         } else {
 212                                 handle_failure(ret, "node -m", *args, rsp);
 213                                 break;
 214                         }
 215                 } else if (streq("-n", *args) || streq("--to-node", *args)) {
 216                         num--, args++;
 217                         if (num < 1) {
 218                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 219                                 break;
 220                         }
 221                         coordinates_t dst;
 222                         int ret;
 223                         if ((ret = node_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 224                                 if (transfer_node(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.node)) {
 225                                         trg.monitor = dst.monitor;
 226                                         trg.desktop = dst.desktop;
 227                                 } else {
 228                                         fail(rsp, "");
 229                                         break;
 230                                 }
 231                         } else {
 232                                 handle_failure(ret, "node -n", *args, rsp);
 233                                 break;
 234                         }
 235                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 236                         num--, args++;
 237                         if (num < 1) {
 238                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 239                                 break;
 240                         }
 241                         coordinates_t dst;
 242                         int ret;
 243                         if ((ret = node_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 244                                 if (swap_nodes(trg.monitor, trg.desktop, trg.node, dst.monitor, dst.desktop, dst.node)) {
 245                                         trg.monitor = dst.monitor;
 246                                         trg.desktop = dst.desktop;
 247                                 } else {
 248                                         fail(rsp, "");
 249                                         break;
 250                                 }
 251                         } else {
 252                                 handle_failure(ret, "node -s", *args, rsp);
 253                                 break;
 254                         }
 255                 } else if (streq("-l", *args) || streq("--layer", *args)) {
 256                         num--, args++;
 257                         if (num < 1) {
 258                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 259                                 break;
 260                         }
 261                         stack_layer_t lyr;
 262                         if (parse_stack_layer(*args, &lyr)) {
 263                                 if (!set_layer(trg.monitor, trg.desktop, trg.node, lyr)) {
 264                                         fail(rsp, "");
 265                                         break;
 266                                 }
 267                         } else {
 268                                 fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 269                                 break;
 270                         }
 271                 } else if (streq("-t", *args) || streq("--state", *args)) {
 272                         num--, args++;
 273                         if (num < 1) {
 274                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 275                                 break;
 276                         }
 277                         client_state_t cst;
 278                         bool alternate = false;
 279                         if ((*args)[0] == '~') {
 280                                 alternate = true;
 281                                 (*args)++;
 282                         }
 283                         if (parse_client_state(*args, &cst)) {
 284                                 if (alternate && trg.node != NULL && trg.node->client != NULL &&
 285                                     trg.node->client->state == cst) {
 286                                         cst = trg.node->client->last_state;
 287                                 }
 288                                 if (!set_state(trg.monitor, trg.desktop, trg.node, cst)) {
 289                                         fail(rsp, "");
 290                                         break;
 291                                 }
 292                                 changed = true;
 293                         } else {
 294                                 fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 295                                 break;
 296                         }
 297                 } else if (streq("-g", *args) || streq("--flag", *args)) {
 298                         num--, args++;
 299                         if (num < 1) {
 300                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 301                                 break;
 302                         }
 303                         if (trg.node == NULL || trg.node->client == NULL) {
 304                                 fail(rsp, "");
 305                                 break;
 306                         }
 307                         char *key = strtok(*args, EQL_TOK);
 308                         char *val = strtok(NULL, EQL_TOK);
 309                         alter_state_t a;
 310                         bool b;
 311                         if (val == NULL) {
 312                                 a = ALTER_TOGGLE;
 313                         } else {
 314                                 if (parse_bool(val, &b)) {
 315                                         a = ALTER_SET;
 316                                 } else {
 317                                         fail(rsp, "node %s: Invalid value for %s: '%s'.\n", *(args - 1), key, val);
 318                                         break;
 319                                 }
 320                         }
 321                         if (streq("locked", key)) {
 322                                 set_locked(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->locked));
 323                         } else if (streq("sticky", key)) {
 324                                 set_sticky(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->sticky));
 325                         } else if (streq("private", key)) {
 326                                 set_private(trg.monitor, trg.desktop, trg.node, (a == ALTER_SET ? b : !trg.node->private));
 327                         } else {
 328                                 fail(rsp, "node %s: Invalid key: '%s'.\n", *(args - 1), key);
 329                                 break;
 330                         }
 331                 } else if (streq("-p", *args) || streq("--presel-dir", *args)) {
 332                         num--, args++;
 333                         if (num < 1) {
 334                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 335                                 break;
 336                         }
 337                         if (trg.node == NULL || trg.node->vacant) {
 338                                 fail(rsp, "");
 339                                 break;
 340                         }
 341                         if (streq("cancel", *args)) {
 342                                 cancel_presel(trg.monitor, trg.desktop, trg.node);
 343                         } else {
 344                                 bool alternate = false;
 345                                 if ((*args)[0] == '~') {
 346                                         alternate = true;
 347                                         (*args)++;
 348                                 }
 349                                 direction_t dir;
 350                                 if (parse_direction(*args, &dir)) {
 351                                         if (alternate && trg.node->presel != NULL && trg.node->presel->split_dir == dir) {
 352                                                 cancel_presel(trg.monitor, trg.desktop, trg.node);
 353                                         } else {
 354                                                 presel_dir(trg.monitor, trg.desktop, trg.node, dir);
 355                                                 if (!IS_RECEPTACLE(trg.node)) {
 356                                                         draw_presel_feedback(trg.monitor, trg.desktop, trg.node);
 357                                                 }
 358                                         }
 359                                 } else {
 360                                         fail(rsp, "node %s: Invalid argument: '%s%s'.\n", *(args - 1), alternate?"~":"", *args);
 361                                         break;
 362                                 }
 363                         }
 364                 } else if (streq("-o", *args) || streq("--presel-ratio", *args)) {
 365                         num--, args++;
 366                         if (num < 1) {
 367                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 368                                 break;
 369                         }
 370                         if (trg.node == NULL || trg.node->vacant) {
 371                                 fail(rsp, "");
 372                                 break;
 373                         }
 374                         double rat;
 375                         if (sscanf(*args, "%lf", &rat) != 1 || rat <= 0 || rat >= 1) {
 376                                 fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 377                                 break;
 378                         } else {
 379                                 presel_ratio(trg.monitor, trg.desktop, trg.node, rat);
 380                                 draw_presel_feedback(trg.monitor, trg.desktop, trg.node);
 381                         }
 382                 } else if (streq("-r", *args) || streq("--ratio", *args)) {
 383                         num--, args++;
 384                         if (num < 1) {
 385                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 386                                 break;
 387                         }
 388                         if (trg.node == NULL) {
 389                                 fail(rsp, "");
 390                                 break;
 391                         }
 392                         if ((*args)[0] == '+' || (*args)[0] == '-') {
 393                                 int pix;
 394                                 if (sscanf(*args, "%i", &pix) == 1) {
 395                                         int max = (trg.node->split_type == TYPE_HORIZONTAL ? trg.node->rectangle.height : trg.node->rectangle.width);
 396                                         double rat = ((max * trg.node->split_ratio) + pix) / max;
 397                                         if (rat > 0 && rat < 1) {
 398                                                 set_ratio(trg.node, rat);
 399                                         } else {
 400                                                 fail(rsp, "");
 401                                                 break;
 402                                         }
 403                                 } else {
 404                                         fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 405                                         break;
 406                                 }
 407                         } else {
 408                                 double rat;
 409                                 if (sscanf(*args, "%lf", &rat) == 1 && rat > 0 && rat < 1) {
 410                                         set_ratio(trg.node, rat);
 411                                 } else {
 412                                         fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 413                                         break;
 414                                 }
 415                         }
 416                         changed = true;
 417                 } else if (streq("-F", *args) || streq("--flip", *args)) {
 418                         num--, args++;
 419                         if (num < 1) {
 420                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 421                                 break;
 422                         }
 423                         if (trg.node == NULL) {
 424                                 fail(rsp, "");
 425                                 break;
 426                         }
 427                         flip_t flp;
 428                         if (parse_flip(*args, &flp)) {
 429                                 flip_tree(trg.node, flp);
 430                                 changed = true;
 431                         } else {
 432                                 fail(rsp, "");
 433                                 break;
 434                         }
 435                 } else if (streq("-R", *args) || streq("--rotate", *args)) {
 436                         num--, args++;
 437                         if (num < 1) {
 438                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 439                                 break;
 440                         }
 441                         if (trg.node == NULL) {
 442                                 fail(rsp, "");
 443                                 break;
 444                         }
 445                         int deg;
 446                         if (parse_degree(*args, &deg)) {
 447                                 rotate_tree(trg.node, deg);
 448                                 changed = true;
 449                         } else {
 450                                 fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 451                                 break;
 452                         }
 453                 } else if (streq("-E", *args) || streq("--equalize", *args)) {
 454                         if (trg.node == NULL) {
 455                                 fail(rsp, "");
 456                                 break;
 457                         }
 458                         equalize_tree(trg.node);
 459                         changed = true;
 460                 } else if (streq("-B", *args) || streq("--balance", *args)) {
 461                         if (trg.node == NULL) {
 462                                 fail(rsp, "");
 463                                 break;
 464                         }
 465                         balance_tree(trg.node);
 466                         changed = true;
 467                 } else if (streq("-C", *args) || streq("--circulate", *args)) {
 468                         num--, args++;
 469                         if (num < 1) {
 470                                 fail(rsp, "node %s: Not enough arguments.\n", *(args - 1));
 471                                 break;
 472                         }
 473                         if (trg.node == NULL) {
 474                                 fail(rsp, "");
 475                                 break;
 476                         }
 477                         circulate_dir_t cir;
 478                         if (parse_circulate_direction(*args, &cir)) {
 479                                 circulate_leaves(trg.monitor, trg.desktop, trg.node, cir);
 480                                 changed = true;
 481                         } else {
 482                                 fail(rsp, "node %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 483                                 break;
 484                         }
 485                 } else if (streq("-i", *args) || streq("--insert-receptacle", *args)) {
 486                         insert_receptacle(trg.monitor, trg.desktop, trg.node);
 487                         changed = true;
 488                 } else if (streq("-c", *args) || streq("--close", *args)) {
 489                         if (num > 1) {
 490                                 fail(rsp, "node %s: Trailing commands.\n", *args);
 491                                 break;
 492                         }
 493                         if (trg.node == NULL || locked_count(trg.node) > 0) {
 494                                 fail(rsp, "");
 495                                 break;
 496                         }
 497                         close_node(trg.node);
 498                         break;
 499                 } else if (streq("-k", *args) || streq("--kill", *args)) {
 500                         if (num > 1) {
 501                                 fail(rsp, "node %s: Trailing commands.\n", *args);
 502                                 break;
 503                         }
 504                         if (trg.node == NULL) {
 505                                 fail(rsp, "");
 506                                 break;
 507                         }
 508                         kill_node(trg.monitor, trg.desktop, trg.node);
 509                         changed = true;
 510                         break;
 511                 } else {
 512                         fail(rsp, "node: Unknown command: '%s'.\n", *args);
 513                         break;
 514                 }
 515
 516                 num--, args++;
 517         }
 518
 519         if (changed) {
 520                 arrange(trg.monitor, trg.desktop);
 521         }
 522 }
 523
 524 void cmd_desktop(char **args, int num, FILE *rsp)
 525 {
 526         if (num < 1) {
 527                 fail(rsp, "desktop: Missing commands.\n");
 528                 return;
 529         }
 530
 531         coordinates_t ref = {mon, mon->desk, NULL};
 532         coordinates_t trg = ref;
 533
 534         if ((*args)[0] != OPT_CHR) {
 535                 int ret;
 536                 if ((ret = desktop_from_desc(*args, &ref, &trg)) == SELECTOR_OK) {
 537                         num--, args++;
 538                 } else {
 539                         handle_failure(ret, "desktop", *args, rsp);
 540                         return;
 541                 }
 542         }
 543
 544         bool changed = false;
 545
 546         while (num > 0) {
 547                 if (streq("-f", *args) || streq("--focus", *args)) {
 548                         coordinates_t dst = trg;
 549                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 550                                 num--, args++;
 551                                 int ret;
 552                                 if ((ret = desktop_from_desc(*args, &trg, &dst)) != SELECTOR_OK) {
 553                                         handle_failure(ret, "desktop -f", *args, rsp);
 554                                         break;
 555                                 }
 556                         }
 557                         focus_node(dst.monitor, dst.desktop, dst.desktop->focus);
 558                 } else if (streq("-a", *args) || streq("--activate", *args)) {
 559                         coordinates_t dst = trg;
 560                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 561                                 num--, args++;
 562                                 int ret;
 563                                 if ((ret = desktop_from_desc(*args, &trg, &dst)) != SELECTOR_OK) {
 564                                         handle_failure(ret, "desktop -a", *args, rsp);
 565                                         break;
 566                                 }
 567                         }
 568                         activate_desktop(dst.monitor, dst.desktop);
 569                 } else if (streq("-m", *args) || streq("--to-monitor", *args)) {
 570                         num--, args++;
 571                         if (num < 1) {
 572                                 fail(rsp, "desktop %s: Not enough arguments.\n", *(args - 1));
 573                                 break;
 574                         }
 575                         if (trg.monitor->desk_head == trg.monitor->desk_tail) {
 576                                 fail(rsp, "");
 577                                 break;
 578                         }
 579                         coordinates_t dst;
 580                         int ret;
 581                         if ((ret = monitor_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 582                                 if (transfer_desktop(trg.monitor, dst.monitor, trg.desktop)) {
 583                                         trg.monitor = dst.monitor;
 584                                 } else {
 585                                         fail(rsp, "");
 586                                         break;
 587                                 }
 588                         } else {
 589                                 handle_failure(ret, "desktop -m", *args, rsp);
 590                                 break;
 591                         }
 592                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 593                         num--, args++;
 594                         if (num < 1) {
 595                                 fail(rsp, "desktop %s: Not enough arguments.\n", *(args - 1));
 596                                 break;
 597                         }
 598                         coordinates_t dst;
 599                         int ret;
 600                         if ((ret = desktop_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 601                                 if (swap_desktops(trg.monitor, trg.desktop, dst.monitor, dst.desktop)) {
 602                                         trg.monitor = dst.monitor;
 603                                 } else {
 604                                         fail(rsp, "");
 605                                         break;
 606                                 }
 607                         } else {
 608                                 handle_failure(ret, "desktop -s", *args, rsp);
 609                                 break;
 610                         }
 611                 } else if (streq("-b", *args) || streq("--bubble", *args)) {
 612                         num--, args++;
 613                         if (num < 1) {
 614                                 fail(rsp, "desktop %s: Not enough arguments.\n", *(args - 1));
 615                                 break;
 616                         }
 617                         cycle_dir_t cyc;
 618                         if (parse_cycle_direction(*args, &cyc)) {
 619                                 desktop_t *d = trg.desktop;
 620                                 if (cyc == CYCLE_PREV) {
 621                                         if (d->prev == NULL) {
 622                                                 while (d->next != NULL) {
 623                                                         swap_desktops(trg.monitor, d, trg.monitor, d->next);
 624                                                 }
 625                                         } else {
 626                                                 swap_desktops(trg.monitor, d, trg.monitor, d->prev);
 627                                         }
 628                                 } else {
 629                                         if (d->next == NULL) {
 630                                                 while (d->prev != NULL) {
 631                                                         swap_desktops(trg.monitor, d, trg.monitor, d->prev);
 632                                                 }
 633                                         } else {
 634                                                 swap_desktops(trg.monitor, d, trg.monitor, d->next);
 635                                         }
 636                                 }
 637                         } else {
 638                                 fail(rsp, "desktop %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 639                                 break;
 640                         }
 641                 } else if (streq("-l", *args) || streq("--layout", *args)) {
 642                         num--, args++;
 643                         if (num < 1) {
 644                                 fail(rsp, "desktop %s: Not enough arguments.\n", *(args - 1));
 645                                 break;
 646                         }
 647                         layout_t lyt;
 648                         cycle_dir_t cyc;
 649                         if (parse_cycle_direction(*args, &cyc)) {
 650                                 change_layout(trg.monitor, trg.desktop, (trg.desktop->layout + 1) % 2);
 651                         } else if (parse_layout(*args, &lyt)) {
 652                                 change_layout(trg.monitor, trg.desktop, lyt);
 653                         } else {
 654                                 fail(rsp, "desktop %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 655                                 break;
 656                         }
 657                 } else if (streq("-n", *args) || streq("--rename", *args)) {
 658                         num--, args++;
 659                         if (num < 1) {
 660                                 fail(rsp, "desktop %s: Not enough arguments.\n", *(args - 1));
 661                                 break;
 662                         }
 663                         rename_desktop(trg.monitor, trg.desktop, *args);
 664                 } else if (streq("-r", *args) || streq("--remove", *args)) {
 665                         if (num > 1) {
 666                                 fail(rsp, "desktop %s: Trailing commands.\n", *args);
 667                                 break;
 668                         }
 669                         if (trg.desktop->root == NULL &&
 670                             trg.monitor->desk_head != trg.monitor->desk_tail) {
 671                                 remove_desktop(trg.monitor, trg.desktop);
 672                                 return;
 673                         } else {
 674                                 fail(rsp, "");
 675                                 break;
 676                         }
 677                 } else {
 678                         fail(rsp, "desktop: Unknown command: '%s'.\n", *args);
 679                         break;
 680                 }
 681                 num--, args++;
 682         }
 683
 684         if (changed) {
 685                 arrange(trg.monitor, trg.desktop);
 686         }
 687 }
 688
 689 void cmd_monitor(char **args, int num, FILE *rsp)
 690 {
 691         if (num < 1) {
 692                 fail(rsp, "monitor: Missing commands.\n");
 693                 return;
 694         }
 695
 696         coordinates_t ref = {mon, NULL, NULL};
 697         coordinates_t trg = ref;
 698
 699         if ((*args)[0] != OPT_CHR) {
 700                 int ret;
 701                 if ((ret = monitor_from_desc(*args, &ref, &trg)) == SELECTOR_OK) {
 702                         num--, args++;
 703                 } else {
 704                         handle_failure(ret, "monitor", *args, rsp);
 705                         return;
 706                 }
 707         }
 708
 709         while (num > 0) {
 710                 if (streq("-f", *args) || streq("--focus", *args)) {
 711                         coordinates_t dst = trg;
 712                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 713                                 num--, args++;
 714                                 int ret;
 715                                 if ((ret = monitor_from_desc(*args, &trg, &dst)) != SELECTOR_OK) {
 716                                         handle_failure(ret, "monitor -f", *args, rsp);
 717                                         fail(rsp, "");
 718                                         return;
 719                                 }
 720                         }
 721                         focus_node(dst.monitor, dst.monitor->desk, dst.monitor->desk->focus);
 722                 } else if (streq("-d", *args) || streq("--reset-desktops", *args)) {
 723                         num--, args++;
 724                         if (num < 1) {
 725                                 fail(rsp, "monitor %s: Not enough arguments.\n", *(args - 1));
 726                                 return;
 727                         }
 728                         desktop_t *d = trg.monitor->desk_head;
 729                         while (num > 0 && d != NULL) {
 730                                 rename_desktop(trg.monitor, d, *args);
 731                                 d = d->next;
 732                                 num--, args++;
 733                         }
 734                         put_status(SBSC_MASK_REPORT);
 735                         while (num > 0) {
 736                                 add_desktop(trg.monitor, make_desktop(*args, XCB_NONE));
 737                                 num--, args++;
 738                         }
 739                         while (d != NULL) {
 740                                 desktop_t *next = d->next;
 741                                 if (d == mon->desk) {
 742                                         focus_node(trg.monitor, d->prev, d->prev->focus);
 743                                 }
 744                                 merge_desktops(trg.monitor, d, mon, mon->desk);
 745                                 remove_desktop(trg.monitor, d);
 746                                 d = next;
 747                         }
 748                 } else if (streq("-a", *args) || streq("--add-desktops", *args)) {
 749                         num--, args++;
 750                         if (num < 1) {
 751                                 fail(rsp, "monitor %s: Not enough arguments.\n", *(args - 1));
 752                                 return;
 753                         }
 754                         while (num > 0) {
 755                                 add_desktop(trg.monitor, make_desktop(*args, XCB_NONE));
 756                                 num--, args++;
 757                         }
 758                 } else if (streq("-r", *args) || streq("--remove", *args)) {
 759                         if (num > 1) {
 760                                 fail(rsp, "monitor %s: Trailing commands.\n", *args);
 761                                 return;
 762                         }
 763                         if (mon_head == mon_tail) {
 764                                 fail(rsp, "");
 765                                 return;
 766                         }
 767                         remove_monitor(trg.monitor);
 768                         return;
 769                 } else if (streq("-o", *args) || streq("--order-desktops", *args)) {
 770                         num--, args++;
 771                         if (num < 1) {
 772                                 fail(rsp, "monitor %s: Not enough arguments.\n", *(args - 1));
 773                                 return;
 774                         }
 775                         desktop_t *d = trg.monitor->desk_head;
 776                         while (d != NULL && num > 0) {
 777                                 desktop_t *next = d->next;
 778                                 coordinates_t dst;
 779                                 if (locate_desktop(*args, &dst) && dst.monitor == trg.monitor) {
 780                                         swap_desktops(trg.monitor, d, dst.monitor, dst.desktop);
 781                                         if (next == dst.desktop) {
 782                                                 next = d;
 783                                         }
 784                                 }
 785                                 d = next;
 786                                 num--, args++;
 787                         }
 788                 } else if (streq("-g", *args) || streq("--rectangle", *args)) {
 789                         num--, args++;
 790                         if (num < 1) {
 791                                 fail(rsp, "monitor %s: Not enough arguments.\n", *(args - 1));
 792                                 return;
 793                         }
 794                         xcb_rectangle_t r;
 795                         if (parse_rectangle(*args, &r)) {
 796                                 update_root(trg.monitor, &r);
 797                         } else {
 798                                 fail(rsp, "monitor %s: Invalid argument: '%s'.\n", *(args - 1), *args);
 799                                 return;
 800                         }
 801                 } else if (streq("-n", *args) || streq("--rename", *args)) {
 802                         num--, args++;
 803                         if (num < 1) {
 804                                 fail(rsp, "monitor %s: Not enough arguments.\n", *(args - 1));
 805                                 return;
 806                         }
 807                         rename_monitor(trg.monitor, *args);
 808                 } else if (streq("-s", *args) || streq("--swap", *args)) {
 809                         num--, args++;
 810                         if (num < 1) {
 811                                 fail(rsp, "monitor %s: Not enough arguments.\n", *(args - 1));
 812                                 return;
 813                         }
 814                         coordinates_t dst;
 815                         int ret;
 816                         if ((ret = monitor_from_desc(*args, &trg, &dst)) == SELECTOR_OK) {
 817                                 if (!swap_monitors(trg.monitor, dst.monitor)) {
 818                                         fail(rsp, "");
 819                                         return;
 820                                 }
 821                         } else {
 822                                 handle_failure(ret, "monitor -s", *args, rsp);
 823                                 return;
 824                         }
 825                 } else {
 826                         fail(rsp, "monitor: Unknown command: '%s'.\n", *args);
 827                         return;
 828                 }
 829                 num--, args++;
 830         }
 831 }
 832
 833 void cmd_query(char **args, int num, FILE *rsp)
 834 {
 835         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
 836         coordinates_t trg = {NULL, NULL, NULL};
 837         monitor_select_t *monitor_sel = NULL;
 838         desktop_select_t *desktop_sel = NULL;
 839         node_select_t *node_sel = NULL;
 840         domain_t dom = DOMAIN_TREE;
 841         int d = 0, t = 0;
 842
 843         while (num > 0) {
 844                 if (streq("-T", *args) || streq("--tree", *args)) {
 845                         dom = DOMAIN_TREE, d++;
 846                 } else if (streq("-M", *args) || streq("--monitors", *args)) {
 847                         dom = DOMAIN_MONITOR, d++;
 848                 } else if (streq("-D", *args) || streq("--desktops", *args)) {
 849                         dom = DOMAIN_DESKTOP, d++;
 850                 } else if (streq("-N", *args) || streq("--nodes", *args)) {
 851                         dom = DOMAIN_NODE, d++;
 852                 } else if (streq("-m", *args) || streq("--monitor", *args)) {
 853                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 854                                 num--, args++;
 855                                 int ret;
 856                                 if ((*args)[0] == '.') {
 857                                         free(monitor_sel);
 858                                         monitor_sel = malloc(sizeof(monitor_select_t));
 859                                         *monitor_sel = make_monitor_select();
 860                                         char *desc = copy_string(*args, strlen(*args));
 861                                         if (!parse_monitor_modifiers(desc, monitor_sel)) {
 862                                                 handle_failure(SELECTOR_BAD_MODIFIERS, "query -m", *args, rsp);
 863                                                 free(desc);
 864                                                 goto end;
 865                                         }
 866                                         free(desc);
 867                                 } else if ((ret = monitor_from_desc(*args, &ref, &trg)) != SELECTOR_OK) {
 868                                         handle_failure(ret, "query -m", *args, rsp);
 869                                         goto end;
 870                                 }
 871                         } else {
 872                                 trg.monitor = ref.monitor;
 873                         }
 874                         t++;
 875                 } else if (streq("-d", *args) || streq("--desktop", *args)) {
 876                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 877                                 num--, args++;
 878                                 int ret;
 879                                 if ((*args)[0] == '.') {
 880                                         free(desktop_sel);
 881                                         desktop_sel = malloc(sizeof(desktop_select_t));
 882                                         *desktop_sel = make_desktop_select();
 883                                         char *desc = copy_string(*args, strlen(*args));
 884                                         if (!parse_desktop_modifiers(desc, desktop_sel)) {
 885                                                 handle_failure(SELECTOR_BAD_MODIFIERS, "query -d", *args, rsp);
 886                                                 free(desc);
 887                                                 goto end;
 888                                         }
 889                                         free(desc);
 890                                 } else if ((ret = desktop_from_desc(*args, &ref, &trg)) != SELECTOR_OK) {
 891                                         handle_failure(ret, "query -d", *args, rsp);
 892                                         goto end;
 893                                 }
 894                         } else {
 895                                 trg.monitor = ref.monitor;
 896                                 trg.desktop = ref.desktop;
 897                         }
 898                         t++;
 899                 } else if (streq("-n", *args) || streq("--node", *args)) {
 900                         if (num > 1 && *(args + 1)[0] != OPT_CHR) {
 901                                 num--, args++;
 902                                 int ret;
 903                                 if ((*args)[0] == '.') {
 904                                         free(node_sel);
 905                                         node_sel = malloc(sizeof(node_select_t));
 906                                         *node_sel = make_node_select();
 907                                         char *desc = copy_string(*args, strlen(*args));
 908                                         if (!parse_node_modifiers(desc, node_sel)) {
 909                                                 handle_failure(SELECTOR_BAD_MODIFIERS, "query -n", *args, rsp);
 910                                                 free(desc);
 911                                                 goto end;
 912                                         }
 913                                         free(desc);
 914                                 } else if ((ret = node_from_desc(*args, &ref, &trg)) != SELECTOR_OK) {
 915                                         handle_failure(ret, "query -n", *args, rsp);
 916                                         goto end;
 917                                 }
 918                         } else {
 919                                 trg = ref;
 920                                 if (ref.node == NULL) {
 921                                         fail(rsp, "");
 922                                         goto end;
 923                                 }
 924                         }
 925                         t++;
 926                 } else {
 927                         fail(rsp, "query: Unknown option: '%s'.\n", *args);
 928                         goto end;
 929                 }
 930                 num--, args++;
 931         }
 932
 933         if (d != 1 || t > 1) {
 934                 fail(rsp, "query: Exactly one domain and at most one constraint must be specified.\n");
 935                 goto end;
 936         }
 937
 938         if (dom == DOMAIN_NODE) {
 939                 if (query_node_ids(trg, node_sel, rsp) < 1) {
 940                         fail(rsp, "");
 941                 }
 942         } else if (dom == DOMAIN_DESKTOP) {
 943                 if (query_desktop_ids(trg, desktop_sel, rsp) < 1) {
 944                         fail(rsp, "");
 945                 }
 946         } else if (dom == DOMAIN_MONITOR) {
 947                 if (query_monitor_ids(trg, monitor_sel, rsp) < 1) {
 948                         fail(rsp, "");
 949                 }
 950         } else {
 951                 if (trg.node != NULL) {
 952                         query_node(trg.node, rsp);
 953                 } else if (trg.desktop != NULL) {
 954                         query_desktop(trg.desktop, rsp);
 955                 } else  if (trg.monitor != NULL) {
 956                         query_monitor(trg.monitor, rsp);
 957                 } else {
 958                         fail(rsp, "");
 959                         goto end;
 960                 }
 961                 fprintf(rsp, "\n");
 962         }
 963
 964 end:
 965         free(monitor_sel);
 966         free(desktop_sel);
 967         free(node_sel);
 968 }
 969
 970 void cmd_rule(char **args, int num, FILE *rsp)
 971 {
 972         if (num < 1) {
 973                 fail(rsp, "rule: Missing commands.\n");
 974                 return;
 975         }
 976
 977         while (num > 0) {
 978                 if (streq("-a", *args) || streq("--add", *args)) {
 979                         num--, args++;
 980                         if (num < 2) {
 981                                 fail(rsp, "rule %s: Not enough arguments.\n", *(args - 1));
 982                                 return;
 983                         }
 984                         rule_t *rule = make_rule();
 985                         char *class_name = strtok(*args, COL_TOK);
 986                         char *instance_name = strtok(NULL, COL_TOK);
 987                         snprintf(rule->class_name, sizeof(rule->class_name), "%s", class_name);
 988                         snprintf(rule->instance_name, sizeof(rule->instance_name), "%s", instance_name==NULL?MATCH_ANY:instance_name);
 989                         num--, args++;
 990                         size_t i = 0;
 991                         while (num > 0) {
 992                                 if (streq("-o", *args) || streq("--one-shot", *args)) {
 993                                         rule->one_shot = true;
 994                                 } else {
 995                                         for (size_t j = 0; i < sizeof(rule->effect) && j < strlen(*args); i++, j++) {
 996                                                 rule->effect[i] = (*args)[j];
 997                                         }
 998                                         if (num > 1 && i < sizeof(rule->effect)) {
 999                                                 rule->effect[i++] = ' ';
1000                                         }
1001                                 }
1002                                 num--, args++;
1003                         }
1004                         rule->effect[MIN(i, sizeof(rule->effect) - 1)] = '\0';
1005                         add_rule(rule);
1006                 } else if (streq("-r", *args) || streq("--remove", *args)) {
1007                         num--, args++;
1008                         if (num < 1) {
1009                                 fail(rsp, "rule %s: Not enough arguments.\n", *(args - 1));
1010                                 return;
1011                         }
1012                         uint16_t idx;
1013                         while (num > 0) {
1014                                 if (parse_index(*args, &idx)) {
1015                                         remove_rule_by_index(idx - 1);
1016                                 } else if (streq("tail", *args)) {
1017                                         remove_rule(rule_tail);
1018                                 } else if (streq("head", *args)) {
1019                                         remove_rule(rule_head);
1020                                 } else {
1021                                         remove_rule_by_cause(*args);
1022                                 }
1023                                 num--, args++;
1024                         }
1025                 } else if (streq("-l", *args) || streq("--list", *args)) {
1026                         list_rules(rsp);
1027                 } else {
1028                         fail(rsp, "rule: Unknown command: '%s'.\n", *args);
1029                         return;
1030                 }
1031                 num--, args++;
1032         }
1033 }
1034
1035 void cmd_pointer(char **args, int num, FILE *rsp)
1036 {
1037         if (num < 1) {
1038                 fail(rsp, "pointer: Missing commands.\n");
1039                 return;
1040         }
1041
1042         while (num > 0) {
1043                 if (streq("-t", *args) || streq("--track", *args)) {
1044                         num--, args++;
1045                         if (num < 2) {
1046                                 fail(rsp, "pointer %s: Not enough arguments.\n", *(args - 1));
1047                                 return;
1048                         }
1049                         int x, y;
1050                         if (sscanf(*args, "%i", &x) == 1 && sscanf(*(args + 1), "%i", &y) == 1) {
1051                                 track_pointer(x, y);
1052                         } else {
1053                                 fail(rsp, "");
1054                                 return;
1055                         }
1056                         num--, args++;
1057                 } else if (streq("-g", *args) || streq("--grab", *args)) {
1058                         num--, args++;
1059                         if (num < 1) {
1060                                 fail(rsp, "pointer %s: Not enough arguments.\n", *(args - 1));
1061                                 return;
1062                         }
1063                         pointer_action_t pac;
1064                         if (parse_pointer_action(*args, &pac)) {
1065                                 grab_pointer(pac);
1066                         } else {
1067                                 fail(rsp, "pointer %s: Invalid argument: '%s'.\n", *(args - 1), *args);
1068                                 return;
1069                         }
1070                 } else if (streq("-u", *args) || streq("--ungrab", *args)) {
1071                         ungrab_pointer();
1072                 } else {
1073                         fail(rsp, "pointer: Unknown command: '%s'.\n", *args);
1074                         return;
1075                 }
1076                 num--, args++;
1077         }
1078 }
1079
1080 void cmd_wm(char **args, int num, FILE *rsp)
1081 {
1082         if (num < 1) {
1083                 fail(rsp, "wm: Missing commands.\n");
1084                 return;
1085         }
1086
1087         while (num > 0) {
1088                 if (streq("-d", *args) || streq("--dump-state", *args)) {
1089                         query_tree(rsp);
1090                         fprintf(rsp, "\n");
1091                 } else if (streq("-l", *args) || streq("--load-state", *args)) {
1092                         num--, args++;
1093                         if (num < 1) {
1094                                 fail(rsp, "wm %s: Not enough arguments.\n", *(args - 1));
1095                                 break;
1096                         }
1097                         if (!restore_tree(*args)) {
1098                                 fail(rsp, "");
1099                                 break;
1100                         }
1101                 } else if (streq("-a", *args) || streq("--add-monitor", *args)) {
1102                         num--, args++;
1103                         if (num < 2) {
1104                                 fail(rsp, "wm %s: Not enough arguments.\n", *(args - 1));
1105                                 break;
1106                         }
1107                         char *name = *args;
1108                         num--, args++;
1109                         xcb_rectangle_t r;
1110                         if (parse_rectangle(*args, &r)) {
1111                                 monitor_t *m = make_monitor(&r, XCB_NONE);
1112                                 snprintf(m->name, sizeof(m->name), "%s", name);
1113                                 add_monitor(m);
1114                                 add_desktop(m, make_desktop(NULL, XCB_NONE));
1115                         } else {
1116                                 fail(rsp, "wm %s: Invalid argument: '%s'.\n", *(args - 1), *args);
1117                                 break;
1118                         }
1119                 } else if (streq("-o", *args) || streq("--adopt-orphans", *args)) {
1120                         adopt_orphans();
1121                 } else if (streq("-g", *args) || streq("--get-status", *args)) {
1122                         print_report(rsp);
1123                 } else if (streq("-h", *args) || streq("--record-history", *args)) {
1124                         num--, args++;
1125                         if (num < 1) {
1126                                 fail(rsp, "wm %s: Not enough arguments.\n", *(args - 1));
1127                                 break;
1128                         }
1129                         bool b;
1130                         if (parse_bool(*args, &b)) {
1131                                 record_history = b;
1132                         } else {
1133                                 fail(rsp, "wm %s: Invalid argument: '%s'.\n", *(args - 1), *args);
1134                                 break;
1135                         }
1136                 } else {
1137                         fail(rsp, "wm: Unkown command: '%s'.\n", *args);
1138                         break;
1139                 }
1140                 num--, args++;
1141         }
1142 }
1143
1144 int cmd_subscribe(char **args, int num, FILE *rsp)
1145 {
1146         int field = 0;
1147         if (num < 1) {
1148                 field = SBSC_MASK_REPORT;
1149         } else {
1150                 subscriber_mask_t mask;
1151                 while (num > 0) {
1152                         if (parse_subscriber_mask(*args, &mask)) {
1153                                 field |= mask;
1154                         } else {
1155                                 fail(rsp, "subscribe: Invalid argument: '%s'.\n", *args);
1156                                 return SUBSCRIBE_FAILURE;
1157                         }
1158                         num--, args++;
1159                 }
1160         }
1161
1162         add_subscriber(rsp, field);
1163         return SUBSCRIBE_SUCCESS;
1164 }
1165
1166 void cmd_quit(char **args, int num, FILE *rsp)
1167 {
1168         if (num > 0 && sscanf(*args, "%i", &exit_status) != 1) {
1169                 fail(rsp, "%s: Invalid argument: '%s'.\n", *(args - 1), *args);
1170                 return;
1171         }
1172         running = false;
1173 }
1174
1175 void cmd_config(char **args, int num, FILE *rsp)
1176 {
1177         if (num < 1) {
1178                 fail(rsp, "config: Missing arguments.\n");
1179                 return;
1180         }
1181
1182         coordinates_t ref = {mon, mon->desk, mon->desk->focus};
1183         coordinates_t trg = {NULL, NULL, NULL};
1184
1185         while (num > 0 && (*args)[0] == OPT_CHR) {
1186                 if (streq("-m", *args) || streq("--monitor", *args)) {
1187                         num--, args++;
1188                         if (num < 1) {
1189                                 fail(rsp, "config %s: Not enough arguments.\n", *(args - 1));
1190                                 return;
1191                         }
1192                         int ret;
1193                         if ((ret = monitor_from_desc(*args, &ref, &trg)) != SELECTOR_OK) {
1194                                 handle_failure(ret, "config -m", *args, rsp);
1195                                 return;
1196                         }
1197                 } else if (streq("-d", *args) || streq("--desktop", *args)) {
1198                         num--, args++;
1199                         if (num < 1) {
1200                                 fail(rsp, "config %s: Not enough arguments.\n", *(args - 1));
1201                                 return;
1202                         }
1203                         int ret;
1204                         if ((ret = desktop_from_desc(*args, &ref, &trg)) != SELECTOR_OK) {
1205                                 handle_failure(ret, "config -d", *args, rsp);
1206                                 return;
1207                         }
1208                 } else if (streq("-n", *args) || streq("--node", *args)) {
1209                         num--, args++;
1210                         if (num < 1) {
1211                                 fail(rsp, "config %s: Not enough arguments.\n", *(args - 1));
1212                                 return;
1213                         }
1214                         int ret;
1215                         if ((ret = node_from_desc(*args, &ref, &trg)) != SELECTOR_OK) {
1216                                 handle_failure(ret, "config -n", *args, rsp);
1217                                 return;
1218                         }
1219                 } else {
1220                         fail(rsp, "config: Unknown option: '%s'.\n", *args);
1221                         return;
1222                 }
1223                 num--, args++;
1224         }
1225         if (num == 2) {
1226                 set_setting(trg, *args, *(args + 1), rsp);
1227         } else if (num == 1) {
1228                 get_setting(trg, *args, rsp);
1229         } else {
1230                 fail(rsp, "config: Was expecting 1 or 2 arguments, received %i.\n", num);
1231         }
1232 }
1233
1234 void set_setting(coordinates_t loc, char *name, char *value, FILE *rsp)
1235 {
1236         bool colors_changed = false;
1237 #define SET_DEF_DEFMON_DEFDESK_WIN(k, v) \
1238                 if (loc.node != NULL) { \
1239                         loc.node->client->k = v; \
1240                 } else if (loc.desktop != NULL) { \
1241                         loc.desktop->k = v; \
1242                         for (node_t *n = first_extrema(loc.desktop->root); n != NULL; n = next_leaf(n, loc.desktop->root)) { \
1243                                 if (n->client != NULL) { \
1244                                         n->client->k = v; \
1245                                 } \
1246                         } \
1247                 } else if (loc.monitor != NULL) { \
1248                         loc.monitor->k = v; \
1249                         for (desktop_t *d = loc.monitor->desk_head; d != NULL; d = d->next) { \
1250                                 d->k = v; \
1251                                 for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) { \
1252                                         if (n->client != NULL) { \
1253                                                 n->client->k = v; \
1254                                         } \
1255                                 } \
1256                         } \
1257                 } else { \
1258                         k = v; \
1259                         for (monitor_t *m = mon_head; m != NULL; m = m->next) { \
1260                                 m->k = v; \
1261                                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next) { \
1262                                         d->k = v; \
1263                                         for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) { \
1264                                                 if (n->client != NULL) { \
1265                                                         n->client->k = v; \
1266                                                 } \
1267                                         } \
1268                                 } \
1269                         } \
1270                 }
1271         if (streq("border_width", name)) {
1272                 unsigned int bw;
1273                 if (sscanf(value, "%u", &bw) != 1) {
1274                         fail(rsp, "config: %s: Invalid value: '%s'.", name, value);
1275                         return;
1276                 }
1277                 SET_DEF_DEFMON_DEFDESK_WIN(border_width, bw)
1278 #undef SET_DEF_DEFMON_DEFDESK_WIN
1279 #define SET_DEF_DEFMON_DESK(k, v) \
1280                 if (loc.desktop != NULL) { \
1281                         loc.desktop->k = v; \
1282                 } else if (loc.monitor != NULL) { \
1283                         loc.monitor->k = v; \
1284                         for (desktop_t *d = loc.monitor->desk_head; d != NULL; d = d->next) { \
1285                                 d->k = v; \
1286                         } \
1287                 } else { \
1288                         k = v; \
1289                         for (monitor_t *m = mon_head; m != NULL; m = m->next) { \
1290                                 m->k = v; \
1291                                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next) { \
1292                                         d->k = v; \
1293                                 } \
1294                         } \
1295                 }
1296         } else if (streq("window_gap", name)) {
1297                 int wg;
1298                 if (sscanf(value, "%i", &wg) != 1) {
1299                         fail(rsp, "");
1300                         return;
1301                 }
1302                 SET_DEF_DEFMON_DESK(window_gap, wg)
1303 #undef SET_DEF_DEFMON_DESK
1304 #define SET_DEF_MON_DESK(k, v) \
1305                 if (loc.desktop != NULL) { \
1306                         loc.desktop->k = v; \
1307                 } else if (loc.monitor != NULL) { \
1308                         loc.monitor->k = v; \
1309                 } else { \
1310                         k = v; \
1311                         for (monitor_t *m = mon_head; m != NULL; m = m->next) { \
1312                                 m->k = v; \
1313                         } \
1314                 }
1315         } else if (streq("top_padding", name)) {
1316                 int tp;
1317                 if (sscanf(value, "%i", &tp) != 1) {
1318                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value);
1319                         return;
1320                 }
1321                 SET_DEF_MON_DESK(padding.top, tp)
1322         } else if (streq("right_padding", name)) {
1323                 int rp;
1324                 if (sscanf(value, "%i", &rp) != 1) {
1325                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value);
1326                         return;
1327                 }
1328                 SET_DEF_MON_DESK(padding.right, rp)
1329         } else if (streq("bottom_padding", name)) {
1330                 int bp;
1331                 if (sscanf(value, "%i", &bp) != 1) {
1332                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value);
1333                         return;
1334                 }
1335                 SET_DEF_MON_DESK(padding.bottom, bp)
1336         } else if (streq("left_padding", name)) {
1337                 int lp;
1338                 if (sscanf(value, "%i", &lp) != 1) {
1339                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value);
1340                         return;
1341                 }
1342                 SET_DEF_MON_DESK(padding.left, lp)
1343 #undef SET_DEF_MON_DESK
1344 #define SET_STR(s) \
1345         } else if (streq(#s, name)) { \
1346                 if (snprintf(s, sizeof(s), "%s", value) < 0) { \
1347                         fail(rsp, ""); \
1348                         return; \
1349                 }
1350         SET_STR(external_rules_command)
1351         SET_STR(status_prefix)
1352 #undef SET_STR
1353         } else if (streq("split_ratio", name)) {
1354                 double r;
1355                 if (sscanf(value, "%lf", &r) == 1 && r > 0 && r < 1) {
1356                         split_ratio = r;
1357                 } else {
1358                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value); \
1359                         return;
1360                 }
1361                 return;
1362 #define SET_COLOR(s) \
1363         } else if (streq(#s, name)) { \
1364                 if (!is_hex_color(value)) { \
1365                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value); \
1366                         return; \
1367                 } else { \
1368                         snprintf(s, sizeof(s), "%s", value); \
1369                         colors_changed = true; \
1370                 }
1371         SET_COLOR(normal_border_color)
1372         SET_COLOR(active_border_color)
1373         SET_COLOR(focused_border_color)
1374         SET_COLOR(presel_feedback_color)
1375 #undef SET_COLOR
1376         } else if (streq("initial_polarity", name)) {
1377                 child_polarity_t p;
1378                 if (parse_child_polarity(value, &p)) {
1379                         initial_polarity = p;
1380                 } else {
1381                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value);
1382                         return;
1383                 }
1384         } else if (streq("focus_follows_pointer", name)) {
1385                 bool b;
1386                 if (parse_bool(value, &b)) {
1387                         if (b == focus_follows_pointer) {
1388                                 return;
1389                         }
1390                         focus_follows_pointer = b;
1391                         uint32_t values[] = {CLIENT_EVENT_MASK | (focus_follows_pointer ? XCB_EVENT_MASK_ENTER_WINDOW : 0)};
1392                         for (monitor_t *m = mon_head; m != NULL; m = m->next) {
1393                                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
1394                                         for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
1395                                                 if (n->client == NULL) {
1396                                                         continue;
1397                                                 }
1398                                                 xcb_change_window_attributes(dpy, n->id, XCB_CW_EVENT_MASK, values);
1399                                         }
1400                                 }
1401                         }
1402                         if (focus_follows_pointer) {
1403                                 for (monitor_t *m = mon_head; m != NULL; m = m->next) {
1404                                         window_show(m->root);
1405                                 }
1406                         } else {
1407                                 for (monitor_t *m = mon_head; m != NULL; m = m->next) {
1408                                         window_hide(m->root);
1409                                 }
1410                                 disable_motion_recorder();
1411                         }
1412                         return;
1413                 } else {
1414                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value);
1415                         return;
1416                 }
1417 #define SET_BOOL(s) \
1418         } else if (streq(#s, name)) { \
1419                 if (!parse_bool(value, &s)) { \
1420                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value); \
1421                         return; \
1422                 }
1423                 SET_BOOL(borderless_monocle)
1424                 SET_BOOL(gapless_monocle)
1425                 SET_BOOL(paddingless_monocle)
1426                 SET_BOOL(single_monocle)
1427                 SET_BOOL(pointer_follows_focus)
1428                 SET_BOOL(pointer_follows_monitor)
1429                 SET_BOOL(history_aware_focus)
1430                 SET_BOOL(focus_by_distance)
1431                 SET_BOOL(ignore_ewmh_focus)
1432                 SET_BOOL(center_pseudo_tiled)
1433 #undef SET_BOOL
1434 #define SET_MON_BOOL(s) \
1435         } else if (streq(#s, name)) { \
1436                 if (!parse_bool(value, &s)) { \
1437                         fail(rsp, "config: %s: Invalid value: '%s'.\n", name, value); \
1438                         return; \
1439                 } \
1440                 if (s) { \
1441                         update_monitors(); \
1442                 }
1443                 SET_MON_BOOL(remove_disabled_monitors)
1444                 SET_MON_BOOL(remove_unplugged_monitors)
1445                 SET_MON_BOOL(merge_overlapping_monitors)
1446 #undef SET_MON_BOOL
1447         } else {
1448                 fail(rsp, "config: Unknown setting: '%s'.\n", name);
1449                 return;
1450         }
1451
1452         for (monitor_t *m = mon_head; m != NULL; m = m->next) {
1453                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
1454                         arrange(m, d);
1455                         if (colors_changed) {
1456                                 update_colors_in(d->root, d, m);
1457                         }
1458                 }
1459         }
1460 }
1461
1462 void get_setting(coordinates_t loc, char *name, FILE* rsp)
1463 {
1464         if (streq("split_ratio", name)) {
1465                 fprintf(rsp, "%lf", split_ratio);
1466         } else if (streq("border_width", name)) {
1467                 if (loc.node != NULL) {
1468                         fprintf(rsp, "%u", loc.node->client->border_width);
1469                 } else if (loc.desktop != NULL) {
1470                         fprintf(rsp, "%u", loc.desktop->border_width);
1471                 } else if (loc.monitor != NULL) {
1472                         fprintf(rsp, "%u", loc.monitor->border_width);
1473                 } else {
1474                         fprintf(rsp, "%u", border_width);
1475                 }
1476         } else if (streq("window_gap", name)) {
1477                 if (loc.desktop != NULL) {
1478                         fprintf(rsp, "%i", loc.desktop->window_gap);
1479                 } else if (loc.monitor != NULL) {
1480                         fprintf(rsp, "%i", loc.monitor->window_gap);
1481                 } else {
1482                         fprintf(rsp, "%i", window_gap);
1483                 }
1484 #define GET_DEF_MON_DESK(k) \
1485                 if (loc.desktop != NULL) { \
1486                         fprintf(rsp, "%i", loc.desktop->k); \
1487                 } else if (loc.monitor != NULL) { \
1488                         fprintf(rsp, "%i", loc.monitor->k); \
1489                 } else { \
1490                         fprintf(rsp, "%i", k); \
1491                 }
1492         } else if (streq("top_padding", name)) {
1493                 GET_DEF_MON_DESK(padding.top)
1494         } else if (streq("right_padding", name)) {
1495                 GET_DEF_MON_DESK(padding.right)
1496         } else if (streq("bottom_padding", name)) {
1497                 GET_DEF_MON_DESK(padding.bottom)
1498         } else if (streq("left_padding", name)) {
1499                 GET_DEF_MON_DESK(padding.left)
1500 #undef GET_DEF_MON_DESK
1501         } else if (streq("external_rules_command", name)) {
1502                 fprintf(rsp, "%s", external_rules_command);
1503         } else if (streq("status_prefix", name)) {
1504                 fprintf(rsp, "%s", status_prefix);
1505         } else if (streq("initial_polarity", name)) {
1506                 fprintf(rsp, "%s", CHILD_POL_STR(initial_polarity));
1507 #define GET_COLOR(s) \
1508         } else if (streq(#s, name)) { \
1509                 fprintf(rsp, "%s", s);
1510         GET_COLOR(normal_border_color)
1511         GET_COLOR(active_border_color)
1512         GET_COLOR(focused_border_color)
1513         GET_COLOR(presel_feedback_color)
1514 #undef GET_COLOR
1515 #define GET_BOOL(s) \
1516         } else if (streq(#s, name)) { \
1517                 fprintf(rsp, "%s", BOOL_STR(s));
1518         GET_BOOL(borderless_monocle)
1519         GET_BOOL(gapless_monocle)
1520         GET_BOOL(paddingless_monocle)
1521         GET_BOOL(single_monocle)
1522         GET_BOOL(focus_follows_pointer)
1523         GET_BOOL(pointer_follows_focus)
1524         GET_BOOL(pointer_follows_monitor)
1525         GET_BOOL(history_aware_focus)
1526         GET_BOOL(focus_by_distance)
1527         GET_BOOL(ignore_ewmh_focus)
1528         GET_BOOL(center_pseudo_tiled)
1529         GET_BOOL(remove_disabled_monitors)
1530         GET_BOOL(remove_unplugged_monitors)
1531         GET_BOOL(merge_overlapping_monitors)
1532 #undef GET_BOOL
1533         } else {
1534                 fail(rsp, "config: Unknown setting: '%s'.\n", name);
1535                 return;
1536         }
1537         fprintf(rsp, "\n");
1538 }
1539
1540 void handle_failure(int code, char *src, char *val, FILE *rsp)
1541 {
1542         switch (code) {
1543                 case SELECTOR_BAD_DESCRIPTOR:
1544                         fail(rsp, "%s: Invalid descriptor found in '%s'.\n", src, val);
1545                         break;
1546                 case SELECTOR_BAD_MODIFIERS:
1547                         fail(rsp, "%s: Invalid modifier found in '%s'.\n", src, val);
1548                         break;
1549                 case SELECTOR_INVALID:
1550                         fail(rsp, "");
1551                         break;
1552         }
1553 }
1554
1555 void fail(FILE *rsp, char *fmt, ...)
1556 {
1557         fprintf(rsp, FAILURE_MESSAGE);
1558         va_list ap;
1559         va_start(ap, fmt);
1560         vfprintf(rsp, fmt, ap);
1561         va_end(ap);
1562 }