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Fire up the wlroots backend and run the event loop

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This commit is contained in:
Drew DeVault 2017-10-22 10:37:30 -04:00
parent 6edc32848f
commit 7c448b4081
11 changed files with 160 additions and 904 deletions
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389
sway/ipc-server.c
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@ -10,7 +10,6 @@
#include <sys/socket.h>
#include <sys/un.h>
#include <stdbool.h>
#include <wlc/wlc-render.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.h>
@ -31,21 +30,22 @@ struct ucred {
#include "sway/config.h"
#include "sway/commands.h"
#include "sway/input.h"
#include "sway/server.h"
#include "stringop.h"
#include "log.h"
#include "list.h"
#include "util.h"
static int ipc_socket = -1;
static struct wlc_event_source *ipc_event_source = NULL;
static struct wl_event_source *ipc_event_source = NULL;
static struct sockaddr_un *ipc_sockaddr = NULL;
static list_t *ipc_client_list = NULL;
static const char ipc_magic[] = {'i', '3', '-', 'i', 'p', 'c'};
struct ipc_client {
struct wlc_event_source *event_source;
struct wlc_event_source *writable_event_source;
struct wl_event_source *event_source;
struct wl_event_source *writable_event_source;
int fd;
uint32_t payload_length;
uint32_t security_policy;
@ -58,25 +58,6 @@ struct ipc_client {
static list_t *ipc_get_pixel_requests = NULL;
struct get_pixels_request {
struct ipc_client *client;
wlc_handle output;
struct wlc_geometry geo;
};
struct get_clipboard_request {
struct ipc_client *client;
json_object *json;
int fd;
struct wlc_event_source *fd_event_source;
struct wlc_event_source *timer_event_source;
char *type;
unsigned int *pending;
char *buf;
size_t buf_size;
size_t buf_position;
};
struct sockaddr_un *ipc_user_sockaddr(void);
int ipc_handle_connection(int fd, uint32_t mask, void *data);
int ipc_client_handle_readable(int client_fd, uint32_t mask, void *data);
@ -118,12 +99,13 @@ void ipc_init(void) {
ipc_client_list = create_list();
ipc_get_pixel_requests = create_list();
ipc_event_source = wlc_event_loop_add_fd(ipc_socket, WLC_EVENT_READABLE, ipc_handle_connection, NULL);
ipc_event_source = wl_event_loop_add_fd(server.wl_event_loop, ipc_socket,
WL_EVENT_READABLE, ipc_handle_connection, NULL);
}
void ipc_terminate(void) {
if (ipc_event_source) {
wlc_event_source_remove(ipc_event_source);
wl_event_source_remove(ipc_event_source);
}
close(ipc_socket);
unlink(ipc_sockaddr->sun_path);
@ -176,7 +158,7 @@ static pid_t get_client_pid(int client_fd) {
int ipc_handle_connection(int fd, uint32_t mask, void *data) {
(void) fd; (void) data;
sway_log(L_DEBUG, "Event on IPC listening socket");
assert(mask == WLC_EVENT_READABLE);
assert(mask == WL_EVENT_READABLE);
int client_fd = accept(ipc_socket, NULL, NULL);
if (client_fd == -1) {
@ -207,7 +189,8 @@ int ipc_handle_connection(int fd, uint32_t mask, void *data) {
client->payload_length = 0;
client->fd = client_fd;
client->subscribed_events = 0;
client->event_source = wlc_event_loop_add_fd(client_fd, WLC_EVENT_READABLE, ipc_client_handle_readable, client);
client->event_source = wl_event_loop_add_fd(server.wl_event_loop, client_fd,
WL_EVENT_READABLE, ipc_client_handle_readable, client);
client->writable_event_source = NULL;
client->write_buffer_size = 128;
@ -234,13 +217,13 @@ static const int ipc_header_size = sizeof(ipc_magic)+8;
int ipc_client_handle_readable(int client_fd, uint32_t mask, void *data) {
struct ipc_client *client = data;
if (mask & WLC_EVENT_ERROR) {
if (mask & WL_EVENT_ERROR) {
sway_log(L_ERROR, "IPC Client socket error, removing client");
ipc_client_disconnect(client);
return 0;
}
if (mask & WLC_EVENT_HANGUP) {
if (mask & WL_EVENT_HANGUP) {
sway_log(L_DEBUG, "Client %d hung up", client->fd);
ipc_client_disconnect(client);
return 0;
@ -296,13 +279,13 @@ int ipc_client_handle_readable(int client_fd, uint32_t mask, void *data) {
int ipc_client_handle_writable(int client_fd, uint32_t mask, void *data) {
struct ipc_client *client = data;
if (mask & WLC_EVENT_ERROR) {
if (mask & WL_EVENT_ERROR) {
sway_log(L_ERROR, "IPC Client socket error, removing client");
ipc_client_disconnect(client);
return 0;
}
if (mask & WLC_EVENT_HANGUP) {
if (mask & WL_EVENT_HANGUP) {
sway_log(L_DEBUG, "Client %d hung up", client->fd);
ipc_client_disconnect(client);
return 0;
@ -328,7 +311,7 @@ int ipc_client_handle_writable(int client_fd, uint32_t mask, void *data) {
client->write_buffer_len -= written;
if (client->write_buffer_len == 0 && client->writable_event_source) {
wlc_event_source_remove(client->writable_event_source);
wl_event_source_remove(client->writable_event_source);
client->writable_event_source = NULL;
}
@ -345,9 +328,9 @@ void ipc_client_disconnect(struct ipc_client *client) {
}
sway_log(L_INFO, "IPC Client %d disconnected", client->fd);
wlc_event_source_remove(client->event_source);
wl_event_source_remove(client->event_source);
if (client->writable_event_source) {
wlc_event_source_remove(client->writable_event_source);
wl_event_source_remove(client->writable_event_source);
}
int i = 0;
while (i < ipc_client_list->length && ipc_client_list->items[i] != client) i++;
@ -365,165 +348,6 @@ bool output_by_name_test(swayc_t *view, void *data) {
return !strcmp(name, view->name);
}
void ipc_get_pixels(wlc_handle output) {
if (ipc_get_pixel_requests->length == 0) {
return;
}
list_t *unhandled = create_list();
struct get_pixels_request *req;
int i;
for (i = 0; i < ipc_get_pixel_requests->length; ++i) {
req = ipc_get_pixel_requests->items[i];
if (req->output != output) {
list_add(unhandled, req);
continue;
}
const struct wlc_size *size = &req->geo.size;
struct wlc_geometry g_out;
char response_header[9];
memset(response_header, 0, sizeof(response_header));
char *data = malloc(sizeof(response_header) + size->w * size->h * 4);
if (!data) {
sway_log(L_ERROR, "Unable to allocate pixels for get_pixels");
ipc_client_disconnect(req->client);
free(req);
continue;
}
wlc_pixels_read(WLC_RGBA8888, &req->geo, &g_out, data + sizeof(response_header));
response_header[0] = 1;
uint32_t *_size = (uint32_t *)(response_header + 1);
_size[0] = g_out.size.w;
_size[1] = g_out.size.h;
size_t len = sizeof(response_header) + (g_out.size.w * g_out.size.h * 4);
memcpy(data, response_header, sizeof(response_header));
ipc_send_reply(req->client, data, len);
free(data);
// free the request since it has been handled
free(req);
}
// free old list of pixel requests and set new list to all unhandled
// requests (request for another output).
list_free(ipc_get_pixel_requests);
ipc_get_pixel_requests = unhandled;
}
static bool is_text_target(const char *target) {
return (strncmp(target, "text/", 5) == 0
|| strcmp(target, "UTF8_STRING") == 0
|| strcmp(target, "STRING") == 0
|| strcmp(target, "TEXT") == 0
|| strcmp(target, "COMPOUND_TEXT") == 0);
}
static void release_clipboard_request(struct get_clipboard_request *req) {
if (--(*req->pending) == 0) {
const char *str = json_object_to_json_string(req->json);
ipc_send_reply(req->client, str, (uint32_t)strlen(str));
json_object_put(req->json);
}
free(req->type);
free(req->buf);
wlc_event_source_remove(req->fd_event_source);
wlc_event_source_remove(req->timer_event_source);
close(req->fd);
free(req);
}
static int ipc_selection_data_cb(int fd, uint32_t mask, void *data) {
assert(data);
struct get_clipboard_request *req = (struct get_clipboard_request *)data;
if (mask & WLC_EVENT_ERROR) {
sway_log(L_ERROR, "Selection data fd error");
goto error;
}
if (mask & WLC_EVENT_READABLE) {
static const unsigned int max_size = 8192 * 1024;
int amt = 0;
do {
int size = req->buf_size - req->buf_position;
int amt = read(fd, req->buf + req->buf_position, size - 1);
if (amt < 0) {
if (errno == EAGAIN) {
return 0;
}
sway_log_errno(L_INFO, "Failed to read from clipboard data fd");
goto release;
}
req->buf_position += amt;
if (req->buf_position >= req->buf_size - 1) {
if (req->buf_size >= max_size) {
sway_log(L_ERROR, "get_clipbard: selection data too large");
goto error;
}
char *next = realloc(req->buf, req->buf_size *= 2);
if (!next) {
sway_log_errno(L_ERROR, "get_clipboard: realloc data buffer failed");
goto error;
}
req->buf = next;
}
} while(amt != 0);
req->buf[req->buf_position] = '\0';
json_object *obj = json_object_new_object();
json_object_object_add(obj, "success", json_object_new_boolean(true));
if (is_text_target(req->type)) {
json_object_object_add(obj, "content", json_object_new_string(req->buf));
json_object_object_add(req->json, req->type, obj);
} else {
size_t outlen;
char *b64 = b64_encode(req->buf, req->buf_position, &outlen);
json_object_object_add(obj, "content", json_object_new_string(b64));
free(b64);
char *type = malloc(strlen(req->type) + 8);
strcat(type, ";base64");
json_object_object_add(req->json, type, obj);
free(type);
}
}
goto release;
error:;
json_object *obj = json_object_new_object();
json_object_object_add(obj, "success", json_object_new_boolean(false));
json_object_object_add(obj, "error",
json_object_new_string("Failed to retrieve data"));
json_object_object_add(req->json, req->type, obj);
release:
release_clipboard_request(req);
return 0;
}
static int ipc_selection_timer_cb(void *data) {
assert(data);
struct get_clipboard_request *req = (struct get_clipboard_request *)data;
sway_log(L_INFO, "get_clipbard: timeout for type %s", req->type);
json_object *obj = json_object_new_object();
json_object_object_add(obj, "success", json_object_new_boolean(false));
json_object_object_add(obj, "error", json_object_new_string("Timeout"));
json_object_object_add(req->json, req->type, obj);
release_clipboard_request(req);
return 0;
}
// greedy wildcard (only "*") matching
bool mime_type_matches(const char *mime_type, const char *pattern) {
const char *wildcard = NULL;
@ -553,125 +377,6 @@ bool mime_type_matches(const char *mime_type, const char *pattern) {
return (*mime_type == *pattern);
}
void ipc_get_clipboard(struct ipc_client *client, char *buf) {
size_t size;
const char **types = wlc_get_selection_types(&size);
if (client->payload_length == 0) {
json_object *obj = json_object_new_array();
for (size_t i = 0; i < size; ++i) {
json_object_array_add(obj, json_object_new_string(types[i]));
}
const char *str = json_object_to_json_string(obj);
ipc_send_reply(client, str, strlen(str));
json_object_put(obj);
return;
}
unescape_string(buf);
strip_quotes(buf);
list_t *requested = split_string(buf, " ");
json_object *json = json_object_new_object();
unsigned int *pending = malloc(sizeof(unsigned int));
*pending = 0;
for (size_t l = 0; l < (size_t) requested->length; ++l) {
const char *pattern = requested->items[l];
bool found = false;
for (size_t i = 0; i < size; ++i) {
if (!mime_type_matches(types[i], pattern)) {
continue;
}
found = true;
struct get_clipboard_request *req = malloc(sizeof(*req));
if (!req) {
sway_log(L_ERROR, "get_clipboard: request malloc failed");
goto data_error;
}
int pipes[2];
if (pipe(pipes) == -1) {
sway_log_errno(L_ERROR, "get_clipboard: pipe call failed");
free(req);
goto data_error;
}
fcntl(pipes[0], F_SETFD, FD_CLOEXEC | O_NONBLOCK);
fcntl(pipes[1], F_SETFD, FD_CLOEXEC | O_NONBLOCK);
if (!wlc_get_selection_data(types[i], pipes[1])) {
close(pipes[0]);
close(pipes[1]);
free(req);
sway_log(L_ERROR, "get_clipboard: failed to retrieve "
"selection data");
goto data_error;
}
if (!(req->buf = malloc(512))) {
close(pipes[0]);
close(pipes[1]);
free(req);
sway_log_errno(L_ERROR, "get_clipboard: buf malloc failed");
goto data_error;
}
(*pending)++;
req->client = client;
req->type = strdup(types[i]);
req->json = json;
req->pending = pending;
req->buf_position = 0;
req->buf_size = 512;
req->fd = pipes[0];
req->timer_event_source = wlc_event_loop_add_timer(ipc_selection_timer_cb, req);
req->fd_event_source = wlc_event_loop_add_fd(pipes[0],
WLC_EVENT_READABLE | WLC_EVENT_ERROR | WLC_EVENT_HANGUP,
&ipc_selection_data_cb, req);
wlc_event_source_timer_update(req->timer_event_source, 30000);
// NOTE: remove this goto to enable retrieving multiple
// targets at once. The whole implementation is already
// made for it. The only reason it was disabled
// at the time of writing is that neither wlc's xselection
// implementation nor (apparently) gtk on wayland supports
// multiple send requests at the same time which makes
// every request except the last one fail (and therefore
// return empty data)
goto cleanup;
}
if (!found) {
sway_log(L_INFO, "Invalid clipboard type %s requested", pattern);
}
}
if (*pending == 0) {
static const char *error_empty = "{ \"success\": false, \"error\": "
"\"No matching types found\" }";
ipc_send_reply(client, error_empty, (uint32_t)strlen(error_empty));
free(json);
free(pending);
}
goto cleanup;
data_error:;
static const char *error_json = "{ \"success\": false, \"error\": "
"\"Failed to create clipboard data request\" }";
ipc_send_reply(client, error_json, (uint32_t)strlen(error_json));
free(json);
free(pending);
cleanup:
list_free(requested);
free(types);
}
void ipc_client_handle_command(struct ipc_client *client) {
if (!sway_assert(client != NULL, "client != NULL")) {
return;
@ -830,52 +535,6 @@ void ipc_client_handle_command(struct ipc_client *client) {
goto exit_cleanup;
}
case IPC_SWAY_GET_PIXELS:
{
char response_header[9];
memset(response_header, 0, sizeof(response_header));
json_object *obj = json_tokener_parse(buf);
json_object *o, *x, *y, *w, *h;
json_object_object_get_ex(obj, "output", &o);
json_object_object_get_ex(obj, "x", &x);
json_object_object_get_ex(obj, "y", &y);
json_object_object_get_ex(obj, "w", &w);
json_object_object_get_ex(obj, "h", &h);
struct wlc_geometry g = {
.origin = {
.x = json_object_get_int(x),
.y = json_object_get_int(y)
},
.size = {
.w = json_object_get_int(w),
.h = json_object_get_int(h)
}
};
swayc_t *output = swayc_by_test(&root_container, output_by_name_test, (void *)json_object_get_string(o));
json_object_put(obj);
if (!output) {
sway_log(L_ERROR, "IPC GET_PIXELS request with unknown output name");
ipc_send_reply(client, response_header, sizeof(response_header));
goto exit_cleanup;
}
struct get_pixels_request *req = malloc(sizeof(struct get_pixels_request));
if (!req) {
sway_log(L_ERROR, "Unable to allocate get_pixels request");
goto exit_cleanup;
}
req->client = client;
req->output = output->handle;
req->geo = g;
list_add(ipc_get_pixel_requests, req);
wlc_output_schedule_render(output->handle);
goto exit_cleanup;
}
case IPC_GET_BAR_CONFIG:
{
if (!(client->security_policy & IPC_FEATURE_GET_BAR_CONFIG)) {
@ -917,14 +576,8 @@ void ipc_client_handle_command(struct ipc_client *client) {
}
case IPC_GET_CLIPBOARD:
{
if (!(client->security_policy & IPC_FEATURE_GET_CLIPBOARD)) {
goto exit_denied;
}
ipc_get_clipboard(client, buf);
goto exit_cleanup;
}
// TODO WLR
break;
default:
sway_log(L_INFO, "Unknown IPC command type %i", client->current_command);
@ -977,7 +630,9 @@ bool ipc_send_reply(struct ipc_client *client, const char *payload, uint32_t pay
client->write_buffer_len += payload_length;
if (!client->writable_event_source) {
client->writable_event_source = wlc_event_loop_add_fd(client->fd, WLC_EVENT_WRITABLE, ipc_client_handle_writable, client);
client->writable_event_source = wl_event_loop_add_fd(
server.wl_event_loop, client->fd, WL_EVENT_WRITABLE,
ipc_client_handle_writable, client);
}
sway_log(L_DEBUG, "Added IPC reply to client %d queue: %s", client->fd, payload);