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268 lines
7.1 KiB
268 lines
7.1 KiB
#include <stdlib.h>
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#include <string.h>
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#include <wlr/types/wlr_xdg_activation_v1.h>
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#include "sway/input/seat.h"
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#include "sway/output.h"
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#include "sway/desktop/launcher.h"
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#include "sway/tree/node.h"
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#include "sway/tree/container.h"
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#include "sway/tree/workspace.h"
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#include "sway/tree/root.h"
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#include "log.h"
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/**
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* Get the pid of a parent process given the pid of a child process.
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*
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* Returns the parent pid or NULL if the parent pid cannot be determined.
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*/
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static pid_t get_parent_pid(pid_t child) {
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pid_t parent = -1;
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char file_name[100];
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char *buffer = NULL;
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const char *sep = " ";
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FILE *stat = NULL;
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size_t buf_size = 0;
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snprintf(file_name, sizeof(file_name), "/proc/%d/stat", child);
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if ((stat = fopen(file_name, "r"))) {
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if (getline(&buffer, &buf_size, stat) != -1) {
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strtok(buffer, sep); // pid
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strtok(NULL, sep); // executable name
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strtok(NULL, sep); // state
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char *token = strtok(NULL, sep); // parent pid
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parent = strtol(token, NULL, 10);
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}
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free(buffer);
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fclose(stat);
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}
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if (parent) {
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return (parent == child) ? -1 : parent;
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}
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return -1;
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}
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void launcher_ctx_consume(struct launcher_ctx *ctx) {
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// The view is now responsible for destroying this ctx
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wl_list_remove(&ctx->token_destroy.link);
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wl_list_init(&ctx->token_destroy.link);
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if (!ctx->activated) {
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// An unactivated token hasn't been destroyed yet
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wlr_xdg_activation_token_v1_destroy(ctx->token);
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}
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ctx->token = NULL;
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// Prevent additional matches
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wl_list_remove(&ctx->link);
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wl_list_init(&ctx->link);
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}
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void launcher_ctx_destroy(struct launcher_ctx *ctx) {
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if (ctx == NULL) {
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return;
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}
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wl_list_remove(&ctx->node_destroy.link);
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wl_list_remove(&ctx->token_destroy.link);
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if (ctx->seat) {
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wl_list_remove(&ctx->seat_destroy.link);
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}
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wl_list_remove(&ctx->link);
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wlr_xdg_activation_token_v1_destroy(ctx->token);
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free(ctx->fallback_name);
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free(ctx);
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}
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struct launcher_ctx *launcher_ctx_find_pid(pid_t pid) {
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if (wl_list_empty(&server.pending_launcher_ctxs)) {
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return NULL;
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}
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struct launcher_ctx *ctx = NULL;
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sway_log(SWAY_DEBUG, "Looking up workspace for pid %d", pid);
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do {
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struct launcher_ctx *_ctx = NULL;
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wl_list_for_each(_ctx, &server.pending_launcher_ctxs, link) {
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if (pid == _ctx->pid) {
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ctx = _ctx;
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sway_log(SWAY_DEBUG,
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"found %s match for pid %d: %s",
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node_type_to_str(ctx->node->type), pid, node_get_name(ctx->node));
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break;
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}
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}
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pid = get_parent_pid(pid);
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} while (pid > 1);
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return ctx;
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}
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struct sway_workspace *launcher_ctx_get_workspace(
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struct launcher_ctx *ctx) {
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struct sway_workspace *ws = NULL;
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struct sway_output *output = NULL;
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switch (ctx->node->type) {
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case N_CONTAINER:
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// Unimplemented
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// TODO: add container matching?
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ws = ctx->node->sway_container->pending.workspace;
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break;
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case N_WORKSPACE:
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ws = ctx->node->sway_workspace;
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break;
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case N_OUTPUT:
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output = ctx->node->sway_output;
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ws = workspace_by_name(ctx->fallback_name);
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if (!ws) {
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sway_log(SWAY_DEBUG,
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"Creating workspace %s for pid %d because it disappeared",
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ctx->fallback_name, ctx->pid);
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if (!output->enabled) {
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sway_log(SWAY_DEBUG,
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"Workspace output %s is disabled, trying another one",
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output->wlr_output->name);
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output = NULL;
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}
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ws = workspace_create(output, ctx->fallback_name);
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}
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break;
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case N_ROOT:
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ws = workspace_create(NULL, ctx->fallback_name);
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break;
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}
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return ws;
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}
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static void ctx_handle_node_destroy(struct wl_listener *listener, void *data) {
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struct launcher_ctx *ctx = wl_container_of(listener, ctx, node_destroy);
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switch (ctx->node->type) {
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case N_CONTAINER:
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// Unimplemented
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break;
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case N_WORKSPACE:;
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struct sway_workspace *ws = ctx->node->sway_workspace;
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wl_list_remove(&ctx->node_destroy.link);
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wl_list_init(&ctx->node_destroy.link);
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// We want to save this ws name to recreate later, hopefully on the
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// same output
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free(ctx->fallback_name);
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ctx->fallback_name = strdup(ws->name);
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if (!ws->output || ws->output->node.destroying) {
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// If the output is being destroyed it would be pointless to track
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// If the output is being disabled, we'll find out if it's still
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// disabled when we try to match it.
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ctx->node = &root->node;
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break;
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}
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ctx->node = &ws->output->node;
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wl_signal_add(&ctx->node->events.destroy, &ctx->node_destroy);
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break;
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case N_OUTPUT:
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wl_list_remove(&ctx->node_destroy.link);
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wl_list_init(&ctx->node_destroy.link);
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// We'll make the ws ctx->name somewhere else
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ctx->node = &root->node;
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break;
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case N_ROOT:
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// Unreachable
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break;
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}
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}
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static void token_handle_destroy(struct wl_listener *listener, void *data) {
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struct launcher_ctx *ctx = wl_container_of(listener, ctx, token_destroy);
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ctx->token = NULL;
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launcher_ctx_destroy(ctx);
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}
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struct launcher_ctx *launcher_ctx_create(struct wlr_xdg_activation_token_v1 *token,
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struct sway_node *node) {
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struct launcher_ctx *ctx = calloc(1, sizeof(struct launcher_ctx));
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const char *fallback_name = NULL;
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struct sway_workspace *ws = NULL;
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switch (node->type) {
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case N_CONTAINER:
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// Unimplemented
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free(ctx);
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return NULL;
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case N_WORKSPACE:
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ws = node->sway_workspace;
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fallback_name = ws->name;
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break;
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case N_OUTPUT:;
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struct sway_output *output = node->sway_output;
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ws = output_get_active_workspace(output);
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fallback_name = ws ? ws->name : NULL;
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break;
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case N_ROOT:
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// Unimplemented
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free(ctx);
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return NULL;
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}
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if (!fallback_name) {
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// TODO: implement a better fallback.
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free(ctx);
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return NULL;
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}
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ctx->fallback_name = strdup(fallback_name);
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ctx->token = token;
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ctx->node = node;
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// Having surface set means that the focus check in wlroots has passed
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ctx->had_focused_surface = token->surface != NULL;
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ctx->node_destroy.notify = ctx_handle_node_destroy;
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wl_signal_add(&ctx->node->events.destroy, &ctx->node_destroy);
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ctx->token_destroy.notify = token_handle_destroy;
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wl_signal_add(&token->events.destroy, &ctx->token_destroy);
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wl_list_init(&ctx->link);
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wl_list_insert(&server.pending_launcher_ctxs, &ctx->link);
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token->data = ctx;
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return ctx;
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}
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static void launch_ctx_handle_seat_destroy(struct wl_listener *listener, void *data) {
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struct launcher_ctx *ctx = wl_container_of(listener, ctx, seat_destroy);
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ctx->seat = NULL;
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wl_list_remove(&ctx->seat_destroy.link);
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}
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// Creates a context with a new token for the internal launcher
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struct launcher_ctx *launcher_ctx_create_internal(void) {
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struct sway_seat *seat = input_manager_current_seat();
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struct sway_workspace *ws = seat_get_focused_workspace(seat);
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if (!ws) {
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sway_log(SWAY_DEBUG, "Failed to create launch context. No workspace.");
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return NULL;
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}
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struct wlr_xdg_activation_token_v1 *token =
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wlr_xdg_activation_token_v1_create(server.xdg_activation_v1);
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struct launcher_ctx *ctx = launcher_ctx_create(token, &ws->node);
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if (!ctx) {
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wlr_xdg_activation_token_v1_destroy(token);
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return NULL;
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}
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ctx->seat = seat;
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ctx->seat_destroy.notify = launch_ctx_handle_seat_destroy;
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wl_signal_add(&seat->wlr_seat->events.destroy, &ctx->seat_destroy);
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return ctx;
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}
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const char *launcher_ctx_get_token_name(struct launcher_ctx *ctx) {
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const char *token = wlr_xdg_activation_token_v1_get_name(ctx->token);
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return token;
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}
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