swayfx/sway/commands.c

605 lines
17 KiB
C
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#include <xkbcommon/xkbcommon.h>
#include <xkbcommon/xkbcommon-names.h>
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#include <wlc/wlc.h>
#include <wlc/wlc-render.h>
#include <stdio.h>
#include <stdlib.h>
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#include <errno.h>
#include <string.h>
#include <strings.h>
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#include <unistd.h>
#include <ctype.h>
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#include <wordexp.h>
#include <libgen.h>
#include <sys/types.h>
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#include <sys/wait.h>
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#include <limits.h>
#include <float.h>
#include <libinput.h>
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#include "sway/layout.h"
#include "sway/focus.h"
#include "sway/workspace.h"
#include "sway/commands.h"
#include "sway/container.h"
#include "sway/output.h"
#include "sway/handlers.h"
#include "sway/input_state.h"
#include "sway/criteria.h"
#include "sway/ipc-server.h"
#include "sway/security.h"
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#include "sway/input.h"
#include "sway/border.h"
#include "stringop.h"
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#include "sway.h"
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#include "util.h"
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#include "list.h"
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#include "log.h"
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struct cmd_handler {
char *command;
sway_cmd *handle;
};
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int sp_index = 0;
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// Returns error object, or NULL if check succeeds.
struct cmd_results *checkarg(int argc, const char *name, enum expected_args type, int val) {
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struct cmd_results *error = NULL;
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switch (type) {
case EXPECTED_MORE_THAN:
if (argc > val) {
return NULL;
}
error = cmd_results_new(CMD_INVALID, name, "Invalid %s command "
"(expected more than %d argument%s, got %d)",
name, val, (char*[2]){"s", ""}[argc==1], argc);
break;
case EXPECTED_AT_LEAST:
if (argc >= val) {
return NULL;
}
error = cmd_results_new(CMD_INVALID, name, "Invalid %s command "
"(expected at least %d argument%s, got %d)",
name, val, (char*[2]){"s", ""}[argc==1], argc);
break;
case EXPECTED_LESS_THAN:
if (argc < val) {
return NULL;
};
error = cmd_results_new(CMD_INVALID, name, "Invalid %s command "
"(expected less than %d argument%s, got %d)",
name, val, (char*[2]){"s", ""}[argc==1], argc);
break;
case EXPECTED_EQUAL_TO:
if (argc == val) {
return NULL;
};
error = cmd_results_new(CMD_INVALID, name, "Invalid %s command "
"(expected %d arguments, got %d)", name, val, argc);
break;
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}
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return error;
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}
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void hide_view_in_scratchpad(swayc_t *sp_view) {
if (sp_view == NULL) {
return;
}
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wlc_view_set_mask(sp_view->handle, 0);
sp_view->visible = false;
swayc_t *ws = sp_view->parent;
remove_child(sp_view);
if (swayc_active_workspace() != ws && ws->floating->length == 0 && ws->children->length == 0) {
destroy_workspace(ws);
} else {
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arrange_windows(ws, -1, -1);
}
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set_focused_container(container_under_pointer());
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}
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void input_cmd_apply(struct input_config *input) {
int i;
i = list_seq_find(config->input_configs, input_identifier_cmp, input->identifier);
if (i >= 0) {
// merge existing config
struct input_config *ic = config->input_configs->items[i];
merge_input_config(ic, input);
free_input_config(input);
input = ic;
} else {
list_add(config->input_configs, input);
}
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current_input_config = input;
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if (input->identifier) {
// Try to find the input device and apply configuration now. If
// this is during startup then there will be no container and config
// will be applied during normal "new input" event from wlc.
struct libinput_device *device = NULL;
for (int i = 0; i < input_devices->length; ++i) {
device = input_devices->items[i];
char* dev_identifier = libinput_dev_unique_id(device);
int match = dev_identifier && strcmp(dev_identifier, input->identifier) == 0;
free(dev_identifier);
if (match) {
apply_input_config(input, device);
break;
}
}
}
}
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void remove_view_from_scratchpad(swayc_t *view) {
int i;
for (i = 0; i < scratchpad->length; i++) {
if (scratchpad->items[i] == view) {
if (sp_index == 0) {
sp_index = scratchpad->length - 1;
} else {
sp_index--;
}
list_del(scratchpad, sp_index);
sp_view = NULL;
}
}
}
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/* Keep alphabetized */
static struct cmd_handler handlers[] = {
{ "assign", cmd_assign },
{ "bar", cmd_bar },
{ "bindcode", cmd_bindcode },
{ "bindsym", cmd_bindsym },
{ "border", cmd_border },
{ "client.background", cmd_client_background },
{ "client.focused", cmd_client_focused },
{ "client.focused_inactive", cmd_client_focused_inactive },
{ "client.placeholder", cmd_client_placeholder },
{ "client.unfocused", cmd_client_unfocused },
{ "client.urgent", cmd_client_urgent },
{ "commands", cmd_commands },
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{ "debuglog", cmd_debuglog },
{ "default_orientation", cmd_orientation },
{ "exec", cmd_exec },
{ "exec_always", cmd_exec_always },
{ "exit", cmd_exit },
{ "floating", cmd_floating },
{ "floating_maximum_size", cmd_floating_maximum_size },
{ "floating_minimum_size", cmd_floating_minimum_size },
{ "floating_modifier", cmd_floating_mod },
{ "floating_scroll", cmd_floating_scroll },
{ "focus", cmd_focus },
{ "focus_follows_mouse", cmd_focus_follows_mouse },
{ "font", cmd_font },
{ "for_window", cmd_for_window },
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{ "force_focus_wrapping", cmd_force_focus_wrapping },
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{ "fullscreen", cmd_fullscreen },
{ "gaps", cmd_gaps },
{ "hide_edge_borders", cmd_hide_edge_borders },
{ "include", cmd_include },
{ "input", cmd_input },
{ "kill", cmd_kill },
{ "layout", cmd_layout },
{ "log_colors", cmd_log_colors },
{ "mode", cmd_mode },
{ "mouse_warping", cmd_mouse_warping },
{ "move", cmd_move },
{ "new_float", cmd_new_float },
{ "new_window", cmd_new_window },
{ "output", cmd_output },
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{ "permit", cmd_permit },
{ "reject", cmd_reject },
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{ "reload", cmd_reload },
{ "resize", cmd_resize },
{ "scratchpad", cmd_scratchpad },
{ "seamless_mouse", cmd_seamless_mouse },
{ "set", cmd_set },
{ "smart_gaps", cmd_smart_gaps },
{ "split", cmd_split },
{ "splith", cmd_splith },
{ "splitt", cmd_splitt },
{ "splitv", cmd_splitv },
{ "sticky", cmd_sticky },
{ "workspace", cmd_workspace },
{ "workspace_auto_back_and_forth", cmd_ws_auto_back_and_forth },
{ "workspace_layout", cmd_workspace_layout },
};
static struct cmd_handler bar_handlers[] = {
{ "binding_mode_indicator", bar_cmd_binding_mode_indicator },
{ "bindsym", bar_cmd_bindsym },
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{ "colors", bar_cmd_colors },
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{ "font", bar_cmd_font },
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{ "height", bar_cmd_height },
{ "hidden_state", bar_cmd_hidden_state },
{ "id", bar_cmd_id },
{ "mode", bar_cmd_mode },
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{ "modifier", bar_cmd_modifier },
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{ "output", bar_cmd_output },
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{ "pango_markup", bar_cmd_pango_markup },
{ "position", bar_cmd_position },
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{ "separator_symbol", bar_cmd_separator_symbol },
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{ "status_command", bar_cmd_status_command },
{ "strip_workspace_numbers", bar_cmd_strip_workspace_numbers },
{ "swaybar_command", bar_cmd_swaybar_command },
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{ "tray_output", bar_cmd_tray_output },
{ "tray_padding", bar_cmd_tray_padding },
{ "workspace_buttons", bar_cmd_workspace_buttons },
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{ "wrap_scroll", bar_cmd_wrap_scroll },
};
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/**
* Check and add color to buffer.
*
* return error object, or NULL if color is valid.
*/
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struct cmd_results *add_color(const char *name, char *buffer, const char *color) {
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int len = strlen(color);
if (len != 7 && len != 9 ) {
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return cmd_results_new(CMD_INVALID, name, "Invalid color definition %s", color);
}
if (color[0] != '#') {
return cmd_results_new(CMD_INVALID, name, "Invalid color definition %s", color);
}
int i;
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for (i = 1; i < len; ++i) {
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if (!isxdigit(color[i])) {
return cmd_results_new(CMD_INVALID, name, "Invalid color definition %s", color);
}
}
// copy color to buffer
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strncpy(buffer, color, len);
// add default alpha channel if color was defined without it
if (len == 7) {
buffer[7] = 'f';
buffer[8] = 'f';
}
buffer[9] = '\0';
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return NULL;
}
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static struct cmd_handler input_handlers[] = {
{ "accel_profile", input_cmd_accel_profile },
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{ "click_method", input_cmd_click_method },
{ "drag_lock", input_cmd_drag_lock },
{ "dwt", input_cmd_dwt },
{ "events", input_cmd_events },
{ "left_handed", input_cmd_left_handed },
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{ "middle_emulation", input_cmd_middle_emulation },
{ "natural_scroll", input_cmd_natural_scroll },
{ "pointer_accel", input_cmd_pointer_accel },
{ "scroll_method", input_cmd_scroll_method },
{ "tap", input_cmd_tap },
};
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static struct cmd_handler bar_colors_handlers[] = {
{ "active_workspace", bar_colors_cmd_active_workspace },
{ "background", bar_colors_cmd_background },
{ "binding_mode", bar_colors_cmd_binding_mode },
{ "focused_background", bar_colors_cmd_focused_background },
{ "focused_separator", bar_colors_cmd_focused_separator },
{ "focused_statusline", bar_colors_cmd_focused_statusline },
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{ "focused_workspace", bar_colors_cmd_focused_workspace },
{ "inactive_workspace", bar_colors_cmd_inactive_workspace },
{ "separator", bar_colors_cmd_separator },
{ "statusline", bar_colors_cmd_statusline },
{ "urgent_workspace", bar_colors_cmd_urgent_workspace },
};
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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);
}
static struct cmd_handler *find_handler(char *line, enum cmd_status block) {
struct cmd_handler d = { .command=line };
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struct cmd_handler *res = NULL;
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sway_log(L_DEBUG, "find_handler(%s) %d", line, block == CMD_BLOCK_INPUT);
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if (block == CMD_BLOCK_BAR) {
res = bsearch(&d, bar_handlers,
sizeof(bar_handlers) / sizeof(struct cmd_handler),
sizeof(struct cmd_handler), handler_compare);
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} else if (block == CMD_BLOCK_BAR_COLORS){
res = bsearch(&d, bar_colors_handlers,
sizeof(bar_colors_handlers) / sizeof(struct cmd_handler),
sizeof(struct cmd_handler), handler_compare);
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} else if (block == CMD_BLOCK_INPUT) {
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sway_log(L_DEBUG, "looking at input handlers");
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res = bsearch(&d, input_handlers,
sizeof(input_handlers) / sizeof(struct cmd_handler),
sizeof(struct cmd_handler), handler_compare);
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} else {
res = bsearch(&d, handlers,
sizeof(handlers) / sizeof(struct cmd_handler),
sizeof(struct cmd_handler), handler_compare);
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}
return res;
}
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struct cmd_results *handle_command(char *_exec, enum command_context context) {
// Even though this function will process multiple commands we will only
// return the last error, if any (for now). (Since we have access to an
// error string we could e.g. concatonate all errors there.)
struct cmd_results *results = NULL;
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char *exec = strdup(_exec);
char *head = exec;
char *cmdlist;
char *cmd;
char *criteria __attribute__((unused));
head = exec;
do {
// Extract criteria (valid for this command list only).
criteria = NULL;
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if (*head == '[') {
++head;
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criteria = argsep(&head, "]");
if (head) {
++head;
// TODO handle criteria
} else {
if (!results) {
results = cmd_results_new(CMD_INVALID, criteria, "Unmatched [");
}
goto cleanup;
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}
// Skip leading whitespace
head += strspn(head, whitespace);
// TODO: it will yield unexpected results to execute commands
// (on any view) that where meant for certain views only.
if (!results) {
int len = strlen(criteria) + strlen(head) + 4;
char *tmp = malloc(len);
snprintf(tmp, len, "[%s] %s", criteria, head);
results = cmd_results_new(CMD_INVALID, tmp,
"Can't handle criteria string: Refusing to execute command");
free(tmp);
}
goto cleanup;
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}
// Split command list
cmdlist = argsep(&head, ";");
cmdlist += strspn(cmdlist, whitespace);
do {
// Split commands
cmd = argsep(&cmdlist, ",");
cmd += strspn(cmd, whitespace);
if (strcmp(cmd, "") == 0) {
sway_log(L_INFO, "Ignoring empty command.");
continue;
}
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sway_log(L_INFO, "Handling command '%s'", cmd);
//TODO better handling of argv
int argc;
char **argv = split_args(cmd, &argc);
if (strcmp(argv[0], "exec") != 0) {
int i;
for (i = 1; i < argc; ++i) {
if (*argv[i] == '\"' || *argv[i] == '\'') {
strip_quotes(argv[i]);
}
}
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}
struct cmd_handler *handler = find_handler(argv[0], CMD_BLOCK_END);
if (!handler) {
if (results) {
free_cmd_results(results);
}
results = cmd_results_new(CMD_INVALID, cmd, "Unknown/invalid command");
free_argv(argc, argv);
goto cleanup;
}
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if (!(get_command_policy(argv[0]) & context)) {
if (results) {
free_cmd_results(results);
}
results = cmd_results_new(CMD_INVALID, cmd,
"Permission denied for %s via %s", cmd,
command_policy_str(context));
free_argv(argc, argv);
goto cleanup;
}
struct cmd_results *res = handler->handle(argc-1, argv+1);
if (res->status != CMD_SUCCESS) {
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free_argv(argc, argv);
if (results) {
free_cmd_results(results);
}
results = res;
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goto cleanup;
}
free_argv(argc, argv);
free_cmd_results(res);
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} while(cmdlist);
} while(head);
cleanup:
free(exec);
if (!results) {
results = cmd_results_new(CMD_SUCCESS, NULL, NULL);
}
return results;
}
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// this is like handle_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) handle_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, enum cmd_status block) {
struct cmd_results *results = NULL;
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int argc;
char **argv = split_args(exec, &argc);
if (!argc) {
results = cmd_results_new(CMD_SUCCESS, NULL, NULL);
goto cleanup;
}
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sway_log(L_INFO, "handling config command '%s'", exec);
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// Endblock
if (**argv == '}') {
results = cmd_results_new(CMD_BLOCK_END, NULL, NULL);
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goto cleanup;
}
struct cmd_handler *handler = find_handler(argv[0], block);
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if (!handler) {
char *input = argv[0] ? argv[0] : "(empty)";
results = cmd_results_new(CMD_INVALID, input, "Unknown/invalid command");
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goto cleanup;
}
int i;
// Var replacement, for all but first argument of set
for (i = handler->handle == cmd_set ? 2 : 1; i < argc; ++i) {
argv[i] = do_var_replacement(argv[i]);
unescape_string(argv[i]);
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}
/* Strip quotes for first argument.
* TODO This part needs to be handled much better */
if (argc>1 && (*argv[1] == '\"' || *argv[1] == '\'')) {
strip_quotes(argv[1]);
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}
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if (handler->handle) {
results = handler->handle(argc-1, argv+1);
} else {
results = cmd_results_new(CMD_INVALID, argv[0], "This command is shimmed, but unimplemented");
}
cleanup:
free_argv(argc, argv);
return results;
}
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, 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, NULL);
goto cleanup;
}
struct cmd_handler *handler = find_handler(cmd, CMD_BLOCK_END);
if (!handler) {
char *input = cmd ? cmd : "(empty)";
results = cmd_results_new(CMD_INVALID, input, "Unknown/invalid command");
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 },
};
size_t names_len = 5;
for (int i = 1; i < argc; ++i) {
size_t j;
for (j = 0; j < names_len; ++j) {
if (strcmp(context_names[j].name, argv[i]) == 0) {
break;
}
}
if (j == names_len) {
results = cmd_results_new(CMD_INVALID, cmd,
"Invalid command context %s", argv[i]);
goto cleanup;
}
context |= context_names[j].context;
}
struct command_policy *policy = NULL;
for (int i = 0; i < config->command_policies->length; ++i) {
struct command_policy *p = config->command_policies->items[i];
if (strcmp(p->command, cmd) == 0) {
policy = p;
break;
}
}
if (!policy) {
policy = alloc_command_policy(cmd);
list_add(config->command_policies, policy);
}
policy->context = context;
sway_log(L_INFO, "Set command policy for %s to %d",
policy->command, policy->context);
results = cmd_results_new(CMD_SUCCESS, NULL, NULL);
cleanup:
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free_argv(argc, argv);
return results;
}
struct cmd_results *cmd_results_new(enum cmd_status status, const char* input, const char *format, ...) {
struct cmd_results *results = malloc(sizeof(struct cmd_results));
results->status = status;
if (input) {
results->input = strdup(input); // input is the command name
} else {
results->input = NULL;
}
if (format) {
char *error = malloc(256);
va_list args;
va_start(args, format);
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->input) {
free(results->input);
}
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if (results->error) {
free(results->error);
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}
free(results);
}
const char *cmd_results_to_json(struct cmd_results *results) {
json_object *result_array = json_object_new_array();
json_object *root = json_object_new_object();
json_object_object_add(root, "success", json_object_new_boolean(results->status == CMD_SUCCESS));
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if (results->input) {
json_object_object_add(root, "input", json_object_new_string(results->input));
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}
if (results->error) {
json_object_object_add(root, "error", json_object_new_string(results->error));
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}
json_object_array_add(result_array, root);
const char *json = json_object_to_json_string(result_array);
free(result_array);
free(root);
return json;
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}