aboutsummaryrefslogtreecommitdiffstats
path: root/sway/commands.c
blob: b09a04c71dff82a2ff10fe0dd54f322cccc35eab (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
#define _POSIX_C_SOURCE 200809
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <stdio.h>
#include <json.h>
#include "sway/commands.h"
#include "sway/config.h"
#include "sway/criteria.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
#include "sway/tree/view.h"
#include "stringop.h"
#include "log.h"

// Returns error object, or NULL if check succeeds.
struct cmd_results *checkarg(int argc, const char *name, enum expected_args type, int val) {
	const char *error_name = NULL;
	switch (type) {
	case EXPECTED_AT_LEAST:
		if (argc < val) {
			error_name = "at least ";
		}
		break;
	case EXPECTED_AT_MOST:
		if (argc > val) {
			error_name = "at most ";
		}
		break;
	case EXPECTED_EQUAL_TO:
		if (argc != val) {
			error_name = "";
		}
	}
	return error_name ?
		cmd_results_new(CMD_INVALID, "Invalid %s command "
				"(expected %s%d argument%s, got %d)",
				name, error_name, val, val != 1 ? "s" : "", argc)
		: NULL;
}

/* Keep alphabetized */
static const struct cmd_handler handlers[] = {
	{ "assign", cmd_assign },
	{ "bar", cmd_bar },
	{ "bindcode", cmd_bindcode },
	{ "bindswitch", cmd_bindswitch },
	{ "bindsym", cmd_bindsym },
	{ "client.background", cmd_client_noop },
	{ "client.focused", cmd_client_focused },
	{ "client.focused_inactive", cmd_client_focused_inactive },
	{ "client.placeholder", cmd_client_noop },
	{ "client.unfocused", cmd_client_unfocused },
	{ "client.urgent", cmd_client_urgent },
	{ "default_border", cmd_default_border },
	{ "default_floating_border", cmd_default_floating_border },
	{ "exec", cmd_exec },
	{ "exec_always", cmd_exec_always },
	{ "floating_maximum_size", cmd_floating_maximum_size },
	{ "floating_minimum_size", cmd_floating_minimum_size },
	{ "floating_modifier", cmd_floating_modifier },
	{ "focus", cmd_focus },
	{ "focus_follows_mouse", cmd_focus_follows_mouse },
	{ "focus_on_window_activation", cmd_focus_on_window_activation },
	{ "focus_wrapping", cmd_focus_wrapping },
	{ "font", cmd_font },
	{ "for_window", cmd_for_window },
	{ "force_display_urgency_hint", cmd_force_display_urgency_hint },
	{ "force_focus_wrapping", cmd_force_focus_wrapping },
	{ "fullscreen", cmd_fullscreen },
	{ "gaps", cmd_gaps },
	{ "hide_edge_borders", cmd_hide_edge_borders },
	{ "input", cmd_input },
	{ "mode", cmd_mode },
	{ "mouse_warping", cmd_mouse_warping },
	{ "new_float", cmd_new_float },
	{ "new_window", cmd_new_window },
	{ "no_focus", cmd_no_focus },
	{ "output", cmd_output },
	{ "popup_during_fullscreen", cmd_popup_during_fullscreen },
	{ "seat", cmd_seat },
	{ "set", cmd_set },
	{ "show_marks", cmd_show_marks },
	{ "smart_borders", cmd_smart_borders },
	{ "smart_gaps", cmd_smart_gaps },
	{ "tiling_drag", cmd_tiling_drag },
	{ "tiling_drag_threshold", cmd_tiling_drag_threshold },
	{ "title_align", cmd_title_align },
	{ "titlebar_border_thickness", cmd_titlebar_border_thickness },
	{ "titlebar_padding", cmd_titlebar_padding },
	{ "unbindcode", cmd_unbindcode },
	{ "unbindswitch", cmd_unbindswitch },
	{ "unbindsym", cmd_unbindsym },
	{ "workspace", cmd_workspace },
	{ "workspace_auto_back_and_forth", cmd_ws_auto_back_and_forth },
};

/* Config-time only commands. Keep alphabetized */
static const struct cmd_handler config_handlers[] = {
	{ "default_orientation", cmd_default_orientation },
	{ "include", cmd_include },
	{ "swaybg_command", cmd_swaybg_command },
	{ "swaynag_command", cmd_swaynag_command },
	{ "workspace_layout", cmd_workspace_layout },
	{ "xwayland", cmd_xwayland },
};

/* Runtime-only commands. Keep alphabetized */
static const struct cmd_handler command_handlers[] = {
	{ "border", cmd_border },
	{ "create_output", cmd_create_output },
	{ "exit", cmd_exit },
	{ "floating", cmd_floating },
	{ "fullscreen", cmd_fullscreen },
	{ "inhibit_idle", cmd_inhibit_idle },
	{ "kill", cmd_kill },
	{ "layout", cmd_layout },
	{ "mark", cmd_mark },
	{ "max_render_time", cmd_max_render_time },
	{ "move", cmd_move },
	{ "nop", cmd_nop },
	{ "opacity", cmd_opacity },
	{ "reload", cmd_reload },
	{ "rename", cmd_rename },
	{ "resize", cmd_resize },
	{ "scratchpad", cmd_scratchpad },
	{ "shortcuts_inhibitor", cmd_shortcuts_inhibitor },
	{ "split", cmd_split },
	{ "splith", cmd_splith },
	{ "splitt", cmd_splitt },
	{ "splitv", cmd_splitv },
	{ "sticky", cmd_sticky },
	{ "swap", cmd_swap },
	{ "title_format", cmd_title_format },
	{ "unmark", cmd_unmark },
	{ "urgent", cmd_urgent },
};

static int handler_compare(const void *_a, const void *_b) {
	const struct cmd_handler *a = _a;
	const struct cmd_handler *b = _b;
	return strcasecmp(a->command, b->command);
}

const struct cmd_handler *find_handler(char *line,
		const struct cmd_handler *handlers, size_t handlers_size) {
	if (!handlers || !handlers_size) {
		return NULL;
	}
	const struct cmd_handler query = { .command = line };
	return bsearch(&query, handlers,
			handlers_size / sizeof(struct cmd_handler),
			sizeof(struct cmd_handler), handler_compare);
}

static const struct cmd_handler *find_handler_ex(char *line,
		const struct cmd_handler *config_handlers, size_t config_handlers_size,
		const struct cmd_handler *command_handlers, size_t command_handlers_size,
		const struct cmd_handler *handlers, size_t handlers_size) {
	const struct cmd_handler *handler = NULL;
	if (config->reading) {
		handler = find_handler(line, config_handlers, config_handlers_size);
	} else if (config->active) {
		handler = find_handler(line, command_handlers, command_handlers_size);
	}
	return handler ? handler : find_handler(line, handlers, handlers_size);
}

static const struct cmd_handler *find_core_handler(char *line) {
	return find_handler_ex(line, config_handlers, sizeof(config_handlers),
			command_handlers, sizeof(command_handlers),
			handlers, sizeof(handlers));
}

static void set_config_node(struct sway_node *node, bool node_overridden) {
	config->handler_context.node = node;
	config->handler_context.container = NULL;
	config->handler_context.workspace = NULL;
	config->handler_context.node_overridden = node_overridden;

	if (node == NULL) {
		return;
	}

	switch (node->type) {
	case N_CONTAINER:
		config->handler_context.container = node->sway_container;
		config->handler_context.workspace = node->sway_container->pending.workspace;
		break;
	case N_WORKSPACE:
		config->handler_context.workspace = node->sway_workspace;
		break;
	case N_ROOT:
	case N_OUTPUT:
		break;
	}
}

list_t *execute_command(char *_exec, struct sway_seat *seat,
		struct sway_container *con) {
	char *cmd;
	char matched_delim = ';';
	list_t *containers = NULL;
	bool using_criteria = false;

	if (seat == NULL) {
		// passing a NULL seat means we just pick the default seat
		seat = input_manager_get_default_seat();
		if (!sway_assert(seat, "could not find a seat to run the command on")) {
			return NULL;
		}
	}

	char *exec = strdup(_exec);
	char *head = exec;
	list_t *res_list = create_list();

	if (!res_list || !exec) {
		return NULL;
	}

	config->handler_context.seat = seat;

	do {
		for (; isspace(*head); ++head) {}
		// Extract criteria (valid for this command list only).
		if (matched_delim == ';') {
			using_criteria = false;
			if (*head == '[') {
				char *error = NULL;
				struct criteria *criteria = criteria_parse(head, &error);
				if (!criteria) {
					list_add(res_list,
							cmd_results_new(CMD_INVALID, "%s", error));
					free(error);
					goto cleanup;
				}
				list_free(containers);
				containers = criteria_get_containers(criteria);
				head += strlen(criteria->raw);
				criteria_destroy(criteria);
				using_criteria = true;
				// Skip leading whitespace
				for (; isspace(*head); ++head) {}
			}
		}
		// Split command list
		cmd = argsep(&head, ";,", &matched_delim);
		for (; isspace(*cmd); ++cmd) {}

		if (strcmp(cmd, "") == 0) {
			sway_log(SWAY_INFO, "Ignoring empty command.");
			continue;
		}
		sway_log(SWAY_INFO, "Handling command '%s'", cmd);
		//TODO better handling of argv
		int argc;
		char **argv = split_args(cmd, &argc);
		if (strcmp(argv[0], "exec") != 0 &&
				strcmp(argv[0], "exec_always") != 0 &&
				strcmp(argv[0], "mode") != 0) {
			for (int i = 1; i < argc; ++i) {
				if (*argv[i] == '\"' || *argv[i] == '\'') {
					strip_quotes(argv[i]);
				}
			}
		}
		const struct cmd_handler *handler = find_core_handler(argv[0]);
		if (!handler) {
			list_add(res_list, cmd_results_new(CMD_INVALID,
					"Unknown/invalid command '%s'", argv[0]));
			free_argv(argc, argv);
			goto cleanup;
		}

		// Var replacement, for all but first argument of set
		for (int i = handler->handle == cmd_set ? 2 : 1; i < argc; ++i) {
			argv[i] = do_var_replacement(argv[i]);
		}


		if (!using_criteria) {
			if (con) {
				set_config_node(&con->node, true);
			} else {
				set_config_node(seat_get_focus_inactive(seat, &root->node),
						false);
			}
			struct cmd_results *res = handler->handle(argc-1, argv+1);
			list_add(res_list, res);
			if (res->status == CMD_INVALID) {
				free_argv(argc, argv);
				goto cleanup;
			}
		} else if (containers->length == 0) {
			list_add(res_list,
					cmd_results_new(CMD_FAILURE, "No matching node."));
		} else {
			struct cmd_results *fail_res = NULL;
			for (int i = 0; i < containers->length; ++i) {
				struct sway_container *container = containers->items[i];
				set_config_node(&container->node, true);
				struct cmd_results *res = handler->handle(argc-1, argv+1);
				if (res->status == CMD_SUCCESS) {
					free_cmd_results(res);
				} else {
					// last failure will take precedence
					if (fail_res) {
						free_cmd_results(fail_res);
					}
					fail_res = res;
					if (res->status == CMD_INVALID) {
						list_add(res_list, fail_res);
						free_argv(argc, argv);
						goto cleanup;
					}
				}
			}
			list_add(res_list,
					fail_res ? fail_res : cmd_results_new(CMD_SUCCESS, NULL));
		}
		free_argv(argc, argv);
	} while(head);
cleanup:
	free(exec);
	list_free(containers);
	return res_list;
}

// this is like execute_command above, except:
// 1) it ignores empty commands (empty lines)
// 2) it does variable substitution
// 3) it doesn't split commands (because the multiple commands are supposed to
//	  be chained together)
// 4) execute_command handles all state internally while config_command has
// some state handled outside (notably the block mode, in read_config)
struct cmd_results *config_command(char *exec, char **new_block) {
	struct cmd_results *results = NULL;
	int argc;
	char **argv = split_args(exec, &argc);

	// Check for empty lines
	if (!argc) {
		results = cmd_results_new(CMD_SUCCESS, NULL);
		goto cleanup;
	}

	// Check for the start of a block
	if (argc > 1 && strcmp(argv[argc - 1], "{") == 0) {
		*new_block = join_args(argv, argc - 1);
		results = cmd_results_new(CMD_BLOCK, NULL);
		goto cleanup;
	}

	// Check for the end of a block
	if (strcmp(argv[argc - 1], "}") == 0) {
		results = cmd_results_new(CMD_BLOCK_END, NULL);
		goto cleanup;
	}

	// Make sure the command is not stored in a variable
	if (*argv[0] == '$') {
		argv[0] = do_var_replacement(argv[0]);
		char *temp = join_args(argv, argc);
		free_argv(argc, argv);
		argv = split_args(temp, &argc);
		free(temp);
		if (!argc) {
			results = cmd_results_new(CMD_SUCCESS, NULL);
			goto cleanup;
		}
	}

	// Determine the command handler
	sway_log(SWAY_INFO, "Config command: %s", exec);
	const struct cmd_handler *handler = find_core_handler(argv[0]);
	if (!handler || !handler->handle) {
		const char *error = handler
			? "Command '%s' is shimmed, but unimplemented"
			: "Unknown/invalid command '%s'";
		results = cmd_results_new(CMD_INVALID, error, argv[0]);
		goto cleanup;
	}

	// Do variable replacement
	if (handler->handle == cmd_set && argc > 1 && *argv[1] == '$') {
		// Escape the variable name so it does not get replaced by one shorter
		char *temp = calloc(1, strlen(argv[1]) + 2);
		temp[0] = '$';
		strcpy(&temp[1], argv[1]);
		free(argv[1]);
		argv[1] = temp;
	}
	char *command = do_var_replacement(join_args(argv, argc));
	sway_log(SWAY_INFO, "After replacement: %s", command);
	free_argv(argc, argv);
	argv = split_args(command, &argc);
	free(command);

	// Strip quotes and unescape the string
	for (int i = handler->handle == cmd_set ? 2 : 1; i < argc; ++i) {
		if (handler->handle != cmd_exec && handler->handle != cmd_exec_always
				&& handler->handle != cmd_mode
				&& handler->handle != cmd_bindsym
				&& handler->handle != cmd_bindcode
				&& handler->handle != cmd_bindswitch
				&& handler->handle != cmd_set
				&& handler->handle != cmd_for_window
				&& (*argv[i] == '\"' || *argv[i] == '\'')) {
			strip_quotes(argv[i]);
		}
		unescape_string(argv[i]);
	}

	// Run command
	results = handler->handle(argc - 1, argv + 1);

cleanup:
	free_argv(argc, argv);
	return results;
}

struct cmd_results *config_subcommand(char **argv, int argc,
		const struct cmd_handler *handlers, size_t handlers_size) {
	char *command = join_args(argv, argc);
	sway_log(SWAY_DEBUG, "Subcommand: %s", command);
	free(command);

	const struct cmd_handler *handler = find_handler(argv[0], handlers,
			handlers_size);
	if (!handler) {
		return cmd_results_new(CMD_INVALID,
				"Unknown/invalid command '%s'", argv[0]);
	}
	if (handler->handle) {
		return handler->handle(argc - 1, argv + 1);
	}
	return cmd_results_new(CMD_INVALID,
			"The command '%s' is shimmed, but unimplemented", argv[0]);
}

struct cmd_results *config_commands_command(char *exec) {
	struct cmd_results *results = NULL;
	int argc;
	char **argv = split_args(exec, &argc);
	if (!argc) {
		results = cmd_results_new(CMD_SUCCESS, NULL);
		goto cleanup;
	}

	// Find handler for the command this is setting a policy for
	char *cmd = argv[0];

	if (strcmp(cmd, "}") == 0) {
		results = cmd_results_new(CMD_BLOCK_END, NULL);
		goto cleanup;
	}

	const struct cmd_handler *handler = find_handler(cmd, NULL, 0);
	if (!handler && strcmp(cmd, "*") != 0) {
		results = cmd_results_new(CMD_INVALID,
			"Unknown/invalid command '%s'", cmd);
		goto cleanup;
	}

	enum command_context context = 0;

	struct {
		char *name;
		enum command_context context;
	} context_names[] = {
		{ "config", CONTEXT_CONFIG },
		{ "binding", CONTEXT_BINDING },
		{ "ipc", CONTEXT_IPC },
		{ "criteria", CONTEXT_CRITERIA },
		{ "all", CONTEXT_ALL },
	};

	for (int i = 1; i < argc; ++i) {
		size_t j;
		for (j = 0; j < sizeof(context_names) / sizeof(context_names[0]); ++j) {
			if (strcmp(context_names[j].name, argv[i]) == 0) {
				break;
			}
		}
		if (j == sizeof(context_names) / sizeof(context_names[0])) {
			results = cmd_results_new(CMD_INVALID,
					"Invalid command context %s", argv[i]);
			goto cleanup;
		}
		context |= context_names[j].context;
	}

	results = cmd_results_new(CMD_SUCCESS, NULL);

cleanup:
	free_argv(argc, argv);
	return results;
}

struct cmd_results *cmd_results_new(enum cmd_status status,
		const char *format, ...) {
	struct cmd_results *results = malloc(sizeof(struct cmd_results));
	if (!results) {
		sway_log(SWAY_ERROR, "Unable to allocate command results");
		return NULL;
	}
	results->status = status;
	if (format) {
		char *error = malloc(256);
		va_list args;
		va_start(args, format);
		if (error) {
			vsnprintf(error, 256, format, args);
		}
		va_end(args);
		results->error = error;
	} else {
		results->error = NULL;
	}
	return results;
}

void free_cmd_results(struct cmd_results *results) {
	if (results->error) {
		free(results->error);
	}
	free(results);
}

char *cmd_results_to_json(list_t *res_list) {
	json_object *result_array = json_object_new_array();
	for (int i = 0; i < res_list->length; ++i) {
		struct cmd_results *results = res_list->items[i];
		json_object *root = json_object_new_object();
		json_object_object_add(root, "success",
				json_object_new_boolean(results->status == CMD_SUCCESS));
		if (results->error) {
			json_object_object_add(root, "parse_error",
					json_object_new_boolean(results->status == CMD_INVALID));
			json_object_object_add(
					root, "error", json_object_new_string(results->error));
		}
		json_object_array_add(result_array, root);
	}
	const char *json = json_object_to_json_string(result_array);
	char *res = strdup(json);
	json_object_put(result_array);
	return res;
}