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|
/*
* Copyright 2015 Samsung Electronics Co., Ltd
*
* Licensed under the Flora License, Version 1.1 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://floralicense.org/license/
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "widget_instance.h"
#include <dlog.h>
#include "debug.h"
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <glib.h>
#include <sqlite3.h>
#include <tzplatform_config.h>
#include <aul.h>
#include <aul_app_com.h>
#include <widget_service.h>
#define USER_UID_MIN 5000
#define MAX_INSTANCE_ID_LEN 256
#define WIDGET_CLASS_DELIMITER "@"
#define QUERY_MAX_LEN 8192
enum {
WIDGET_INSTANCE_CREATED,
WIDGET_INSTANCE_RUNNING,
WIDGET_INSTANCE_TERMINATED,
WIDGET_INSTANCE_DELETED
};
struct _widget_instance {
char *id;
pid_t pid;
char *widget_id;
int w;
int h;
double period;
bundle *content_info;
int status;
int stored;
};
struct widget_app {
char *viewer_id;
char *widget_id;
int cnt;
GList *instances;
};
static char *wayland_display = NULL;
static char *xdg_runtime_dir = NULL;
static GList *_widget_instances = NULL;
static GList *_widget_apps = NULL;
static sqlite3 *_widget_db = NULL;
static char *viewer_appid = NULL;
static aul_app_com_connection_h conn = NULL;
#define QUERY_CREATE_TABLE_WIDGET "create table if not exists widget_instance" \
"(widget_id text, " \
"viewer_id text, " \
"content_info text, " \
"instance_id text, " \
"PRIMARY KEY(instance_id)) "
static const char *__get_widget_db(uid_t uid)
{
const char *widget_db = NULL;
if (uid >= USER_UID_MIN) {
tzplatform_set_user(uid);
widget_db = tzplatform_mkpath(TZ_USER_DB, ".widget_instance.db");
tzplatform_reset_user();
} else {
_E("Fail to get widget db. only regular user has widget db");
return NULL;
}
_E("%s", widget_db);
return widget_db;
}
static int __init(bool readonly)
{
int rc;
uid_t uid = getuid();
if (_widget_db) {
_D("already initialized");
return 0;
}
rc = sqlite3_open_v2(__get_widget_db(uid), &_widget_db,
readonly ? SQLITE_OPEN_READONLY : SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);
if (SQLITE_OK != rc) {
_E("Can't open database: %d, %s, extended: %d", rc, sqlite3_errmsg(_widget_db),
sqlite3_extended_errcode(_widget_db));
goto err;
}
rc = sqlite3_exec(_widget_db, "PRAGMA journal_mode = PERSIST", NULL, NULL, NULL);
if (SQLITE_OK != rc) {
_E("Fail to change journal mode\n");
goto err;
}
rc = sqlite3_exec(_widget_db, QUERY_CREATE_TABLE_WIDGET, NULL, NULL, NULL);
if (SQLITE_OK != rc) {
_E("Fail to create tables\n");
goto err;
}
return 0;
err:
if (_widget_db) {
sqlite3_close(_widget_db);
_widget_db = NULL;
}
return -1;
}
static int __fini(void)
{
if (_widget_db) {
sqlite3_close(_widget_db);
_widget_db = NULL;
}
return 0;
}
static struct _widget_instance *__pick_instance(const char *widget_id, const char *instance_id)
{
GList *apps = _widget_apps;
GList *instances = NULL;
struct widget_app *app = NULL;
struct _widget_instance *instance = NULL;
while (apps) {
app = apps->data;
if (app && g_strcmp0(widget_id, app->widget_id) == 0) {
instances = app->instances;
while (instances) {
instance = instances->data;
if (instance && g_strcmp0(instance_id, instance->id) == 0) {
return instance;
}
instances = instances->next;
}
}
apps = apps->next;
}
return NULL;
}
static struct widget_app *__pick_app(const char *widget_id)
{
GList *apps = _widget_apps;
struct widget_app *app = NULL;
while (apps) {
app = apps->data;
if (app && app->widget_id && g_strcmp0(widget_id, app->widget_id) == 0)
return app;
apps = apps->next;
}
return NULL;
}
static struct widget_app *__add_app(const char *widget_id, const char *viewer_id)
{
struct widget_app *app = NULL;
app = (struct widget_app *)malloc(sizeof(struct widget_app));
if (app == NULL) {
_E("out of memory");
return NULL;
}
app->viewer_id = g_strdup(viewer_id);
app->widget_id = g_strdup(widget_id);
app->instances = NULL;
app->cnt = 0;
_widget_apps = g_list_append(_widget_apps, app);
return app;
}
static const char *__create_instance_id(const char *widget_id)
{
char instance_id[MAX_INSTANCE_ID_LEN];
int id = 0;
struct widget_app *app = NULL;
if (widget_id == NULL)
return NULL;
app = __pick_app(widget_id);
if (app == NULL) {
app = __add_app(widget_id, viewer_appid);
if (app == NULL)
return NULL;
}
id = app->cnt;
app->cnt++;
snprintf(instance_id, MAX_INSTANCE_ID_LEN, "%d:%s", id, widget_id);
_D("new instance: %s", instance_id);
return g_strdup(instance_id);
}
static struct _widget_instance *__add_instance(const char *id, const char *widget_id)
{
struct _widget_instance *instance = NULL;
struct widget_app *app = NULL;
instance = (struct _widget_instance *)malloc(sizeof(struct _widget_instance));
if (instance == NULL) {
_E("out of memory");
return NULL;
}
instance->status = WIDGET_INSTANCE_CREATED;
instance->id = (char *)id;
instance->pid = 0;
instance->stored = 0;
instance->widget_id = g_strdup(widget_id);
instance->content_info = NULL;
_widget_instances = g_list_append(_widget_instances, instance);
app = __pick_app(widget_id);
if (app)
app->instances = g_list_append(app->instances, instance);
else
_E("failed to find app: %s", widget_id);
return instance;
}
static void __remove_instance(struct _widget_instance *instance)
{
struct widget_app *app = NULL;
if (instance == NULL) {
_E("invalid argument");
return;
}
if (instance->widget_id)
app = __pick_app(instance->widget_id);
if (app) {
app->instances = g_list_remove(app->instances, instance);
if (app->instances == NULL) {
_widget_apps = g_list_remove(_widget_apps, app);
free(app);
app = NULL;
}
}
_widget_instances = g_list_remove(_widget_instances, instance);
if (instance->widget_id) {
free(instance->widget_id);
instance->widget_id = NULL;
}
if (instance->id) {
free(instance->id);
instance->id = NULL;
}
if (instance->content_info) {
bundle_free(instance->content_info);
instance->content_info = NULL;
}
free(instance);
}
static int __load_instance_list()
{
int rc;
char select_query[] = "SELECT widget_id, content_info, instance_id FROM widget_instance WHERE viewer_id=?";
char *widget_id;
char *content_info;
char *instance_id;
struct _widget_instance *instance = NULL;
struct widget_app *app = NULL;
sqlite3_stmt* p_statement;
if (_widget_db == NULL) {
_E("widget db is not initialized");
return -1;
}
rc = sqlite3_prepare_v2(_widget_db, select_query, strlen(select_query),
&p_statement, NULL);
if (rc != SQLITE_OK) {
_E("Sqlite3 error [%d] : <%s> executing statement\n", rc,
sqlite3_errmsg(_widget_db));
return -1;
}
sqlite3_bind_text(p_statement, 1, viewer_appid, -1, SQLITE_TRANSIENT);
while (sqlite3_step(p_statement) == SQLITE_ROW) {
widget_id = (char *)sqlite3_column_text(p_statement, 0);
content_info = (char *)sqlite3_column_text(p_statement, 1);
instance_id = (char *)sqlite3_column_text(p_statement, 2);
app = __pick_app(widget_id);
if (app == NULL) {
app = __add_app(widget_id, viewer_appid);
if (app == NULL) {
_E("failed to add app: %s", widget_id);
continue;
}
/* TODO set app->cnt to last instance number, or need to replace how to create id */
}
instance = __add_instance(instance_id, widget_id);
if (instance == NULL) {
_E("failed to add instance: %s", instance_id);
continue;
}
instance->content_info = bundle_decode((const bundle_raw *)content_info, strlen(content_info));
if (instance->content_info == NULL)
_E("failed to decode bundle: %s", instance_id);
instance->status = WIDGET_INSTANCE_CREATED;
instance->stored = 1;
}
rc = sqlite3_finalize(p_statement);
if (rc != SQLITE_OK) {
_E("Sqlite3 error [%d] : <%s> finalizing statement\n", rc,
sqlite3_errmsg(_widget_db));
}
return 0;
}
static int __update_instance_info(struct _widget_instance *instance)
{
int rc = 0;
const char insert_query[] = "INSERT INTO widget_instance(widget_id, viewer_id, content_info, instance_id) VALUES(?,?,?,?)";
const char update_query[] = "UPDATE widget_instance SET content_info=? WHERE instance_id=?";
const char delete_query[] = "DELETE FROM widget_instance WHERE instance_id=?";
sqlite3_stmt* p_statement;
struct widget_app *app = NULL;
char *content = NULL;
int content_len = 0;
if (_widget_db == NULL) {
_E("call widget_instance_init() first");
return -1;
}
if (instance == NULL) {
_E("wrong argument");
return -1;
}
if (instance->content_info) {
rc = bundle_encode(instance->content_info, (bundle_raw **)&content, &content_len);
if (rc != BUNDLE_ERROR_NONE)
_E("failed to get bundle data: %s", instance->id);
}
if (content == NULL) {
content = g_strdup("NULL");
content_len = strlen("NULL");
}
if (instance->stored) {
if (instance->status == WIDGET_INSTANCE_DELETED) {
rc = sqlite3_prepare_v2(_widget_db, delete_query, strlen(delete_query),
&p_statement, NULL);
if (rc != SQLITE_OK) {
_E("Sqlite3 error [%d] : <%s> executing statement\n", rc,
sqlite3_errmsg(_widget_db));
goto cleanup;
}
sqlite3_bind_text(p_statement, 1, instance->id, -1, SQLITE_TRANSIENT);
} else {
rc = sqlite3_prepare_v2(_widget_db, update_query, strlen(update_query),
&p_statement, NULL);
if (rc != SQLITE_OK) {
_E("Sqlite3 error [%d] : <%s> executing statement\n", rc,
sqlite3_errmsg(_widget_db));
goto cleanup;
}
sqlite3_bind_text(p_statement, 1, content, -1, SQLITE_TRANSIENT);
sqlite3_bind_text(p_statement, 2, instance->id, -1, SQLITE_TRANSIENT);
}
} else {
app = __pick_app(instance->widget_id);
if (app == NULL) {
_E("can not find app: %s", instance->id);
goto cleanup;
}
rc = sqlite3_prepare_v2(_widget_db, insert_query, strlen(insert_query),
&p_statement, NULL);
if (rc != SQLITE_OK) {
_E("Sqlite3 error [%d] : <%s> executing statement\n", rc,
sqlite3_errmsg(_widget_db));
goto cleanup;
}
sqlite3_bind_text(p_statement, 1, instance->widget_id, -1, SQLITE_TRANSIENT);
sqlite3_bind_text(p_statement, 2, app->viewer_id, -1, SQLITE_TRANSIENT);
sqlite3_bind_text(p_statement, 3, content, -1, SQLITE_TRANSIENT);
sqlite3_bind_text(p_statement, 4, instance->id, -1, SQLITE_TRANSIENT);
}
rc = sqlite3_step(p_statement);
if (rc == SQLITE_DONE) {
if (instance->status == WIDGET_INSTANCE_DELETED) {
__remove_instance(instance);
instance = NULL;
} else
instance->stored = 1;
}
if (rc != SQLITE_DONE) {
_E("Sqlite3 error [%d] : <%s> executing statement\n", rc,
sqlite3_errmsg(_widget_db));
}
cleanup:
if (p_statement) {
rc = sqlite3_finalize(p_statement);
if (rc != SQLITE_OK) {
_E("Sqlite3 error [%d] : <%s> finalizing statement\n", rc,
sqlite3_errmsg(_widget_db));
}
}
if (content) {
free(content);
content = NULL;
}
return rc;
}
EAPI int widget_instance_create(const char *widget_id, char **instance_id)
{
const char *id = NULL;
struct _widget_instance *instance = NULL;
_D("create: %s", widget_id);
id = __create_instance_id(widget_id);
if (!id) {
_E("failed to get instance id for %s", widget_id);
return -1;
}
instance = __add_instance(id, widget_id);
if (instance) {
*instance_id = (char *)id;
_D("create done");
return 0;
}
*instance_id = NULL;
return -1;
}
static int __send_aul_cmd(const char *widget_id, const char *instance_id, bundle *extra)
{
int ret = 0;
const char *appid;
const char *classid = widget_id;
bundle *b = extra;
appid = g_strstr_len(widget_id, strlen(widget_id), WIDGET_CLASS_DELIMITER) + 1;
if (appid != (const char *)1) { /* move pointer next to delimiter */
if (appid > widget_id + (sizeof(char) * strlen(widget_id)))
return -1; /* bad ptr */
} else {
appid = widget_id;
}
if (b == NULL) {
b = bundle_create();
}
bundle_add_str(b, WIDGET_K_INSTANCE, instance_id);
bundle_add_str(b, WIDGET_K_CLASS, classid);
ret = aul_launch_app(appid, b);
if (!extra) {
bundle_free(b);
b = NULL;
}
return ret;
}
static int __set_width(bundle *content_info, int w)
{
char wbuf[6];
if (content_info == NULL || w < 0)
return -1;
snprintf(wbuf, 6, "%d", w);
bundle_add_str(content_info, WIDGET_K_WIDTH, wbuf);
return 0;
}
static int __set_height(bundle *content_info, int h)
{
char hbuf[6];
if (content_info == NULL || h < 0)
return -1;
snprintf(hbuf, 6, "%d", h);
bundle_add_str(content_info, WIDGET_K_HEIGHT, hbuf);
return 0;
}
EAPI int widget_instance_launch(const char *widget_id, const char *instance_id, bundle *content_info, int w, int h)
{
int ret = 0;
char pid_buf[6];
bundle *b = content_info;
char *instance = (char *)instance_id;
_D("launch: %s %s", widget_id, instance_id);
if (widget_id == NULL) {
_E("wrong arguments");
return -1;
}
if (xdg_runtime_dir == NULL) {
xdg_runtime_dir = getenv("XDG_RUNTIME_DIR");
if (xdg_runtime_dir == NULL) {
_E("failed to get XDG_RUNTIME_DIR");
return -1;
}
}
if (wayland_display == NULL) {
wayland_display = getenv("WAYLAND_DISPLAY");
if (wayland_display == NULL) {
_E("unable to get wayland display port");
return -1;
}
}
if (instance == NULL) {
ret = widget_instance_create(widget_id, &instance);
if (ret < 0 || instance == NULL) {
_E("failed to create instance for %s", widget_id);
return -1;
}
}
if (b == NULL) {
b = bundle_create();
if (b == NULL) {
_E("out of memory");
return -1;
}
}
snprintf(pid_buf, sizeof(pid_buf), "%d", getpid());
bundle_add_str(b, WIDGET_K_CALLER, pid_buf);
bundle_add_str(b, AUL_K_WAYLAND_DISPLAY, wayland_display);
bundle_add_str(b, AUL_K_WAYLAND_WORKING_DIR, xdg_runtime_dir);
bundle_add_str(b, WIDGET_K_OPERATION, "create");
__set_width(b, w);
__set_height(b, h);
ret = __send_aul_cmd(widget_id, instance, b);
if (ret) {
struct _widget_instance *i = __pick_instance(widget_id, instance);
if (i)
i->pid = ret;
}
if (content_info == NULL)
bundle_free(b);
return ret;
}
EAPI int widget_instance_terminate(const char *widget_id, const char *instance_id)
{
int ret = 0;
bundle *b = bundle_create();
if (widget_id == NULL || instance_id == NULL || b == NULL)
return -1;
bundle_add_str(b, WIDGET_K_OPERATION, "terminate");
ret = __send_aul_cmd(widget_id, instance_id, b);
bundle_free(b);
return ret;
}
EAPI int widget_instance_destroy(const char *widget_id, const char *instance_id)
{
int ret = 0;
bundle *b = bundle_create();
if (widget_id == NULL || instance_id == NULL || b == NULL)
return -1;
bundle_add_str(b, WIDGET_K_OPERATION, "destroy");
ret = __send_aul_cmd(widget_id, instance_id, b);
bundle_free(b);
return ret;
}
EAPI int widget_instance_foreach(const char *widget_id, widget_instance_foreach_cb cb, void *data)
{
GList *apps = _widget_apps;
GList *instances = NULL;
struct widget_app *app = NULL;
struct _widget_instance *instance = NULL;
if (widget_id == NULL || cb == NULL)
return -1;
while (apps) {
app = apps->data;
if (app && g_strcmp0(app->widget_id, widget_id) == 0) {
instances = app->instances;
while (instances) {
instance = instances->data;
if (instance && cb(instance, data) < 0) {
break;
}
instances = instances->next;
}
}
apps = apps->next;
}
return 0;
}
static int __widget_handler(const char *viewer_id, aul_app_com_result_e e, bundle *envelope, void *user_data)
{
char *widget_id = NULL;
char *instance_id = NULL;
int *status = NULL;
size_t status_sz = 0;
int cmd = 0;
struct _widget_instance *instance;
bundle_get_str(envelope, WIDGET_K_CLASS, &widget_id);
bundle_get_str(envelope, WIDGET_K_INSTANCE, &instance_id);
bundle_get_byte(envelope, WIDGET_K_STATUS, (void **)&status, &status_sz);
if (widget_id == NULL || instance_id == NULL || status == NULL) {
_E("undefined class or instance %s of %s", instance_id, widget_id);
if (status != NULL) {
_E("cmd: %d", *status);
}
return 0;
}
instance = __pick_instance(widget_id, instance_id);
if (instance == NULL) {
_E("undefined instance id: %s of %s", instance_id, widget_id);
return 0;
}
cmd = *status;
switch (cmd) {
case WIDGET_INSTANCE_EVENT_CREATE:
if (instance->content_info)
bundle_free(instance->content_info);
instance->content_info = bundle_dup(envelope);
__update_instance_info(instance);
break;
case WIDGET_INSTANCE_EVENT_TERMINATE:
if (instance->content_info)
bundle_free(instance->content_info);
instance->content_info = bundle_dup(envelope);
instance->status = WIDGET_INSTANCE_TERMINATED;
__update_instance_info(instance);
break;
case WIDGET_INSTANCE_EVENT_DESTROY:
instance->status = WIDGET_INSTANCE_DELETED;
__update_instance_info(instance);
break;
case WIDGET_INSTANCE_EVENT_PAUSE:
break;
case WIDGET_INSTANCE_EVENT_RESUME:
instance->status = WIDGET_INSTANCE_RUNNING;
break;
case WIDGET_INSTANCE_EVENT_UPDATE:
if (instance->content_info)
bundle_free(instance->content_info);
instance->content_info = bundle_dup(envelope);
__update_instance_info(instance);
break;
default:
_E("unknown command: %d", cmd);
break;
}
return 0;
}
EAPI int widget_instance_init(const char *viewer_id)
{
if (viewer_id == NULL)
return -1;
viewer_appid = g_strdup(viewer_id);
__init(false);
__load_instance_list();
if (aul_app_com_create(viewer_id, NULL, __widget_handler, NULL, &conn) < 0) {
_E("failed to create app com endpoint");
return -1;
}
return 0;
}
EAPI int widget_instance_fini()
{
if (conn) {
if (aul_app_com_leave(conn) < 0)
_E("failed to leave app com endpoint");
}
__fini();
if (viewer_appid) {
g_free(viewer_appid);
viewer_appid = NULL;
}
return 0;
}
EAPI int widget_instance_get_id(widget_instance_h instance, char **id)
{
if (instance == NULL || id == NULL)
return -1;
*id = (char *)instance->id;
return 0;
}
EAPI int widget_instance_get_content(widget_instance_h instance, bundle **content)
{
if (instance == NULL || content == NULL)
return -1;
*content = instance->content_info;
return 0;
}
EAPI int widget_instance_get_width(widget_instance_h instance, int *w)
{
if (instance == NULL || w == NULL)
return -1;
*w = instance->w;
return 0;
}
EAPI int widget_instance_get_height(widget_instance_h instance, int *h)
{
if (instance == NULL || h == NULL)
return -1;
*h = instance->h;
return 0;
}
EAPI int widget_instance_get_period(widget_instance_h instance, double *period)
{
if (instance == NULL || period == NULL)
return -1;
*period = instance->period;
return 0;
}
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