summaryrefslogtreecommitdiff
path: root/src/logic.cpp
blob: 82059ac62845b202537c9e7c28b124fa5416871d (plain)
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
/*
 * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    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.
 */
/*
 * @file        logic.cpp
 * @author      Janusz Kozerski (j.kozerski@samsung.com)
 * @version     1.0
 * @brief       This file is the implementation of SQL queries
 */
#include <stdexcept>
#include <tzplatform_config.h>

#include <cchecker/logic.h>
#include <cchecker/log.h>
#include <cchecker/sql_query.h>

using namespace std;

namespace CCHECKER {

namespace {
const char *const DB_PATH = tzplatform_mkpath(TZ_SYS_DB, ".cert-checker.db");
const char *const TEPM_APP_ID = "temp#app_id";
}

Logic::~Logic(void)
{
    LogDebug("Cert-checker cleaning.");

    // wait and join processing thread
    if (m_thread.joinable()) {
        LogDebug("Waiting for join processing thread");
        set_should_exit();
        m_to_process.notify_one();
        m_thread.join();
        LogDebug("Processing thread joined");
    }
    else
        LogDebug("No thread to join");

    if (m_proxy_connman)
        g_object_unref(m_proxy_connman);
    if (m_proxy_pkgmgr_install)
        g_object_unref(m_proxy_pkgmgr_install);
    if (m_proxy_pkgmgr_uninstall)
        g_object_unref(m_proxy_pkgmgr_uninstall);
    delete m_sqlquery;
}

Logic::Logic(void) :
        m_sqlquery(NULL),
        m_was_setup_called(false),
        m_is_online(true),
        m_should_exit(false),
        m_proxy_connman(NULL),
        m_proxy_pkgmgr_install(NULL),
        m_proxy_pkgmgr_uninstall(NULL)
{}

bool Logic::get_online() const
{
    return m_is_online;
}

void Logic::set_online(bool online)
{
    m_is_online = online;
}

error_t Logic::setup_db()
{
    // TODO: If database doesn't exist -should we create a new one?
    Try {
        m_sqlquery = new DB::SqlQuery(DB_PATH);
    } Catch (runtime_error) {
        LogError("Error while creating SqlQuery object");
        return DATABASE_ERROR;
    }

    if(!m_sqlquery) {
        LogError("Cannot open database");
        return DATABASE_ERROR;
    }

    return NO_ERROR;
}

error_t  Logic::setup()
{
    // Check if setup was called
    if (m_was_setup_called) {
        LogError("You can call setup only once");
        return INTERNAL_ERROR;
    }
    m_was_setup_called = true;

    // Check if DB exists and create a new one if it doesn't
    error_t err = setup_db();
    if (err != NO_ERROR) {
        LogError("Database error");
        return err;
    }

    load_database_to_buffer();

    // run process thread - thread will be waiting on condition variable
    m_thread = std::thread(&Logic::process_all, this);

    // FIXME: pkgmanager API signal handling was temporarily replaced
    //        by dbus API

    // Add pkgmgr install callback
    LogDebug("register pkgmgr install event callback start");
    if (register_dbus_signal_handler(m_proxy_pkgmgr_install,
            "org.tizen.slp.pkgmgr_status",
            "/org/tizen/slp/pkgmgr/install",
            "org.tizen.slp.pkgmgr.install",
            pkgmgr_install_callback) != NO_ERROR) {
        LogError("Error in register_pkgmgr_install_signal_handler");
        return REGISTER_CALLBACK_ERROR;
    }
    LogDebug("register pkgmgr install event callback success");

    // Add pkgmgr uninstall callback
    LogDebug("register pkgmgr uninstall event callback start");
    if (register_dbus_signal_handler(m_proxy_pkgmgr_uninstall,
            "org.tizen.slp.pkgmgr_status",
            "/org/tizen/slp/pkgmgr/uninstall",
            "org.tizen.slp.pkgmgr.uninstall",
            pkgmgr_uninstall_callback) != NO_ERROR) {
        LogError("Error in register_pkgmgr_uninstall_signal_handler");
        return REGISTER_CALLBACK_ERROR;
    }
    LogDebug("register pkgmgr uninstall event callback success");

    // Add connman callback
    LogDebug("register connman event callback start");
    if (register_dbus_signal_handler(m_proxy_connman,
            "net.connman",
            "/",
            "net.connman.Manager",
            connman_callback) != NO_ERROR) {
        LogError("Error in register_connman_signal_handler");
        return REGISTER_CALLBACK_ERROR;
    }
    LogDebug("register connman event callback success");

    return NO_ERROR;
}

error_t Logic::register_dbus_signal_handler(GDBusProxy *proxy,
        const char *name,
        const char *object_path,
        const char *interface_name,
        void (*callback) (GDBusProxy *proxy,
                          gchar      *sender_name,
                          gchar      *signal_name,
                          GVariant   *parameters,
                          void *logic_ptr)
        )
{
    GError *error = NULL;
    GDBusProxyFlags flags = G_DBUS_PROXY_FLAGS_NONE;

    // Obtain a connection to the System Bus
    proxy = g_dbus_proxy_new_for_bus_sync(G_BUS_TYPE_SYSTEM,
            flags,
            NULL, /* GDBusInterfaceInfo */
            name,
            object_path,
            interface_name,
            NULL, /* GCancellable */
            &error);

    if (proxy == NULL) {
        if (error) {
            LogError("Error creating D-Bus proxy for /'" << interface_name <<"/': " << error->message);
            g_error_free(error);
        } else {
            LogError("Error creating D-Bus proxy for /'" << interface_name <<"/'. Unknown error");
        }
        return DBUS_ERROR;
    }

    // Connect to g-signal to receive signals from proxy
    if (g_signal_connect(proxy, "g-signal", G_CALLBACK(callback), this) < 1) {
        LogError("g_signal_connect error while connecting " << interface_name);
        return REGISTER_CALLBACK_ERROR;
    }

    return NO_ERROR;
}

// FIXME: pkgmgr callback doesn't receive signals with successful installation/uninstallation.
//        For now it will be replaced by low-level signal handling from DBUS.
void Logic::pkgmgr_install_callback(GDBusProxy */*proxy*/,
                                    gchar      */*sender_name*/,
                                    gchar      */*signal_name*/,
                                    GVariant   *parameters,
                                    void       *logic_ptr)
{
    LogDebug("----------------- pkgmgr_install_callback -----------------\n");

    Logic *logic = static_cast<Logic*> (logic_ptr);
    logic->pkgmgr_callback_internal(parameters, EVENT_INSTALL);
}

void Logic::pkgmgr_uninstall_callback(GDBusProxy */*proxy*/,
                                      gchar      */*sender_name*/,
                                      gchar      */*signal_name*/,
                                      GVariant   *parameters,
                                      void       *logic_ptr)
{
    LogDebug("----------------- pkgmgr_uninstall_callback -----------------\n");

    Logic *logic = static_cast<Logic*> (logic_ptr);
    logic->pkgmgr_callback_internal(parameters, EVENT_UNINSTALL);
}

void Logic::pkgmgr_callback_internal(GVariant       *parameters,
                                     pkgmgr_event_t event)
{
    gchar *parameters_g = g_variant_print(parameters, TRUE);
    std::string params_str = std::string(parameters_g);
    LogDebug("params: " << params_str);
    g_free (parameters_g);

    /* DBus message format from pkgmgr:
     * uint32 5001
     * string "/usr/share/widget_demo/mancala.wgt_-427832739"
     * string "wgt"
     * string "yKrWwxz1KX"
     * string "end"
     * string "ok"
     *
     * Check if numbers of children (vaules) fits - should be 6:
     */
    int num = g_variant_n_children(parameters);
    if (num != 6) {
        LogError("Wrong number of children in g_variant: " << num << ", but should be 6.");
        return;
    }

    guint32 uid;
    gchar *pkgid = NULL;
    gchar *state = NULL;
    gchar *status = NULL;

    uid = g_variant_get_uint32(g_variant_get_child_value(parameters, 0));
    pkgid = g_variant_dup_string(g_variant_get_child_value(parameters, 3), NULL);
    state = g_variant_dup_string(g_variant_get_child_value(parameters, 4), NULL);
    status = g_variant_dup_string(g_variant_get_child_value(parameters, 5), NULL);

    // FIXME: No information about app_id in the signal. Use stub.
    app_t app(TEPM_APP_ID, pkgid, uid, {});

    if (std::string(state) == "end" && std::string(status) == "ok") {
        if (event == EVENT_INSTALL) {
            LogDebug("Install: uid : " << uid << ", pkgid: " << pkgid <<
                    ", state: " << state << ", status: " << status);
            m_queue.push_event(event_t(app, event_t::event_type_t::APP_INSTALL));
        }
        else if (event == EVENT_UNINSTALL) {
            LogDebug("Uninstall: uid : " << uid << ", pkgid: " << pkgid <<
                    ", state: " << state << ", status: " << status);
            m_queue.push_event(event_t(app, event_t::event_type_t::APP_UNINSTALL));
        }

        m_to_process.notify_one();
    }
    else
        LogDebug("Wrong state (" << std::string(state) << ") or status (" << std::string(status) << ")");

    g_free(pkgid);
    g_free(state);
    g_free(status);
}

void Logic::connman_callback(GDBusProxy */*proxy*/,
                             gchar      */*sender_name*/,
                             gchar      *signal_name,
                             GVariant   *parameters,
                             void *logic_ptr)
{
    string signal_name_str = string(signal_name);
    if (signal_name_str != "PropertyChanged") {
        // Invalid param. Nothing to do here.
        return;
    }

    gchar *parameters_g = g_variant_print(parameters, TRUE);
    string params_str = string(parameters_g);
    g_free (parameters_g);

    Logic *logic = static_cast<Logic*> (logic_ptr);

    if (params_str == "('State', <'online'>)") {
        LogDebug("Device online");
        logic->set_online(true);

        logic->m_to_process.notify_one();
    }
    else if (params_str == "('State', <'offline'>)") {
        LogDebug("Device offline");
        logic->set_online(false);
    }
}

void Logic::check_ocsp(app_t &app)
{
    (void)app;
}

void Logic::add_ocsp_url(const string &issuer, const string &url, int64_t date)
{
    m_sqlquery->set_url(issuer, url, date);
}

void Logic::pkgmanager_uninstall(const app_t &app)
{
    (void)app;
}

void Logic::get_certs_from_signature(const string &signature, vector<string> &cert)
{
    (void)signature;
    (void)cert;
}

void Logic::load_database_to_buffer()
{
    LogDebug("Loading database to the buffer");
    m_sqlquery->get_app_list(m_buffer);
}

/**
 * This function should move all event from queue to the buffer
 **/
void Logic::process_queue(void)
{
    event_t event;
    while(m_queue.pop_event(event)) {
        process_event(event);
    }
}

error_t Logic::process_buffer(void)
{
    // TODO: Implement
    return NO_ERROR;
}

void Logic::process_all()
{
    //Check if should't exit
    while (!get_should_exit()) {
        std::unique_lock<std::mutex> lock(m_mutex_cv);

        if (m_queue.empty()) {
            LogDebug("Processing thread: waiting on condition");
            m_to_process.wait(lock);
        }
        else
            LogDebug("Processing thread: More events in queue - processing again");

        LogDebug("Processing thread: running");

        process_queue();
        if (get_online())
            process_buffer();
        else
            LogDebug("No network. Buffer won't be processed");

        LogDebug("Processing done");
    }

    // should process queue just before exit
    process_queue();
}

void Logic::process_event(const event_t &event)
{
    if (event.event_type == event_t::event_type_t::APP_INSTALL) {
        // TODO: implement geting app signature, then getting certificates from app signature.
        // TODO: implement add app to buffer and database
        add_app_to_buffer(event.app);
    }
    else if (event.event_type == event_t::event_type_t::APP_UNINSTALL) {
        remove_app_from_buffer(event.app);
    }
    else
        LogError("Unknown event type");
}

void Logic::add_app_to_buffer(const app_t &app)
{
    // First add app to DB
    if(!m_sqlquery->add_app_to_check_list(app)) {
        LogError("Failed to add " << app.str() << "to database");
        // We can do nothing about it. We can only log the error.
    }

    // Then add app to buffer
    m_buffer.push_back(app);
}

void Logic::remove_app_from_buffer(const app_t &app)
{
    // First remove app from DB
    m_sqlquery->remove_app_from_check_list(app);

    // Then remove app from buffer
    for (auto iter = m_buffer.begin(); iter != m_buffer.end(); ++iter) {
        if (iter->app_id == app.app_id &&
                iter->pkg_id == app.pkg_id &&
                iter->uid == app.uid) {
            LogDebug(iter->str() << " found in buffer - will be removed");
            m_buffer.erase(iter);
            break;
        }
    }
}

bool Logic::get_should_exit(void) const
{
    return m_should_exit;
}

void Logic::set_should_exit(void)
{
    m_should_exit = true;

}

} //CCHECKER