summaryrefslogtreecommitdiffstats
path: root/twrp.cpp
blob: c6b9fda7f3a1568f53994fecd3592a0d580faf27 (plain) (blame)
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
/*
		TWRP is free software: you can redistribute it and/or modify
		it under the terms of the GNU General Public License as published by
		the Free Software Foundation, either version 3 of the License, or
		(at your option) any later version.

		TWRP is distributed in the hope that it will be useful,
		but WITHOUT ANY WARRANTY; without even the implied warranty of
		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
		GNU General Public License for more details.

		You should have received a copy of the GNU General Public License
		along with TWRP.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <signal.h>
#include "gui/twmsg.h"

#include "cutils/properties.h"
#include "bootloader_message_twrp/include/bootloader_message_twrp/bootloader_message.h"

#ifdef ANDROID_RB_RESTART
#include "cutils/android_reboot.h"
#else
#include <sys/reboot.h>
#endif

extern "C" {
#include "gui/gui.h"
}
#include "set_metadata.h"
#include "gui/gui.hpp"
#include "gui/pages.hpp"
#include "gui/objects.hpp"
#include "twcommon.h"
#include "twrp-functions.hpp"
#include "data.hpp"
#include "partitions.hpp"
#include "openrecoveryscript.hpp"
#include "variables.h"
#include "twrpAdbBuFifo.hpp"
#ifdef TW_USE_NEW_MINADBD
#include "minadbd/minadbd.h"
#else
extern "C" {
#include "minadbd21/adb.h"
}
#endif

#include <selinux/label.h>
struct selabel_handle *selinux_handle;

//extern int adb_server_main(int is_daemon, int server_port, int /* reply_fd */);

TWPartitionManager PartitionManager;
int Log_Offset;
bool datamedia;

static void Print_Prop(const char *key, const char *name, void *cookie) {
	printf("%s=%s\n", key, name);
}

int main(int argc, char **argv) {
	// Recovery needs to install world-readable files, so clear umask
	// set by init
	umask(0);

	Log_Offset = 0;

	// Set up temporary log file (/tmp/recovery.log)
	freopen(TMP_LOG_FILE, "a", stdout);
	setbuf(stdout, NULL);
	freopen(TMP_LOG_FILE, "a", stderr);
	setbuf(stderr, NULL);

	signal(SIGPIPE, SIG_IGN);

	// Handle ADB sideload
	if (argc == 3 && strcmp(argv[1], "--adbd") == 0) {
		property_set("ctl.stop", "adbd");
#ifdef TW_USE_NEW_MINADBD
		//adb_server_main(0, DEFAULT_ADB_PORT, -1); TODO fix this for android8
		minadbd_main();
#else
		adb_main(argv[2]);
#endif
		return 0;
	}

#ifdef RECOVERY_SDCARD_ON_DATA
	datamedia = true;
#endif

	char crash_prop_val[PROPERTY_VALUE_MAX];
	int crash_counter;
	property_get("twrp.crash_counter", crash_prop_val, "-1");
	crash_counter = atoi(crash_prop_val) + 1;
	snprintf(crash_prop_val, sizeof(crash_prop_val), "%d", crash_counter);
	property_set("twrp.crash_counter", crash_prop_val);
	property_set("ro.twrp.boot", "1");
	property_set("ro.twrp.version", TW_VERSION_STR);

	time_t StartupTime = time(NULL);
	printf("Starting TWRP %s-%s on %s (pid %d)\n", TW_VERSION_STR, TW_GIT_REVISION, ctime(&StartupTime), getpid());

	// Load default values to set DataManager constants and handle ifdefs
	DataManager::SetDefaultValues();
	printf("Starting the UI...\n");
	gui_init();
	printf("=> Linking mtab\n");
	symlink("/proc/mounts", "/etc/mtab");
	std::string fstab_filename = "/etc/twrp.fstab";
	if (!TWFunc::Path_Exists(fstab_filename)) {
		fstab_filename = "/etc/recovery.fstab";
	}
	printf("=> Processing %s\n", fstab_filename.c_str());
	if (!PartitionManager.Process_Fstab(fstab_filename, 1)) {
		LOGERR("Failing out of recovery due to problem with fstab.\n");
		return -1;
	}
	PartitionManager.Output_Partition_Logging();
	// Load up all the resources
	gui_loadResources();

	if (TWFunc::Path_Exists("/prebuilt_file_contexts")) {
		if (TWFunc::Path_Exists("/file_contexts")) {
			printf("Renaming regular /file_contexts -> /file_contexts.bak\n");
			rename("/file_contexts", "/file_contexts.bak");
		}
		printf("Moving /prebuilt_file_contexts -> /file_contexts\n");
		rename("/prebuilt_file_contexts", "/file_contexts");
	}
	struct selinux_opt selinux_options[] = {
		{ SELABEL_OPT_PATH, "/file_contexts" }
	};
	selinux_handle = selabel_open(SELABEL_CTX_FILE, selinux_options, 1);
	if (!selinux_handle)
		printf("No file contexts for SELinux\n");
	else
		printf("SELinux contexts loaded from /file_contexts\n");
	{ // Check to ensure SELinux can be supported by the kernel
		char *contexts = NULL;

		if (PartitionManager.Mount_By_Path("/cache", false) && TWFunc::Path_Exists("/cache/recovery")) {
			lgetfilecon("/cache/recovery", &contexts);
			if (!contexts) {
				lsetfilecon("/cache/recovery", "test");
				lgetfilecon("/cache/recovery", &contexts);
			}
		} else {
			LOGINFO("Could not check /cache/recovery SELinux contexts, using /sbin/teamwin instead which may be inaccurate.\n");
			lgetfilecon("/sbin/teamwin", &contexts);
		}
		if (!contexts) {
			gui_warn("no_kernel_selinux=Kernel does not have support for reading SELinux contexts.");
		} else {
			free(contexts);
			gui_msg("full_selinux=Full SELinux support is present.");
		}
	}

	PartitionManager.Mount_By_Path("/cache", false);

	bool Shutdown = false;
	bool SkipDecryption = false;
	string Send_Intent = "";
	{
		TWPartition* misc = PartitionManager.Find_Partition_By_Path("/misc");
		if (misc != NULL) {
			if (misc->Current_File_System == "emmc") {
				set_misc_device(misc->Actual_Block_Device.c_str());
			} else {
				LOGERR("Only emmc /misc is supported\n");
			}
		}
		get_args(&argc, &argv);

		int index, index2, len;
		char* argptr;
		char* ptr;
		printf("Startup Commands: ");
		for (index = 1; index < argc; index++) {
			argptr = argv[index];
			printf(" '%s'", argv[index]);
			len = strlen(argv[index]);
			if (*argptr == '-') {argptr++; len--;}
			if (*argptr == '-') {argptr++; len--;}
			if (*argptr == 'u') {
				ptr = argptr;
				index2 = 0;
				while (*ptr != '=' && *ptr != '\n')
					ptr++;
				// skip the = before grabbing Zip_File
				while (*ptr == '=')
					ptr++;
				if (*ptr) {
					string ORSCommand = "install ";
					ORSCommand.append(ptr);

					// If we have a map of blocks we don't need to mount data.
					SkipDecryption = *ptr == '@';

					if (!OpenRecoveryScript::Insert_ORS_Command(ORSCommand))
						break;
				} else
					LOGERR("argument error specifying zip file\n");
			} else if (*argptr == 'w') {
				if (len == 9) {
					if (!OpenRecoveryScript::Insert_ORS_Command("wipe data\n"))
						break;
				} else if (len == 10) {
					if (!OpenRecoveryScript::Insert_ORS_Command("wipe cache\n"))
						break;
				}
				// Other 'w' items are wipe_ab and wipe_package_size which are related to bricking the device remotely. We will not bother to suppor these as having TWRP probably makes "bricking" the device in this manner useless
			} else if (*argptr == 'n') {
				DataManager::SetValue(TW_BACKUP_NAME, gui_parse_text("{@auto_generate}"));
				if (!OpenRecoveryScript::Insert_ORS_Command("backup BSDCAE\n"))
					break;
			} else if (*argptr == 'p') {
				Shutdown = true;
			} else if (*argptr == 's') {
				if (strncmp(argptr, "send_intent", strlen("send_intent")) == 0) {
					ptr = argptr + strlen("send_intent") + 1;
					Send_Intent = *ptr;
				} else if (strncmp(argptr, "security", strlen("security")) == 0) {
					LOGINFO("Security update\n");
				} else if (strncmp(argptr, "sideload", strlen("sideload")) == 0) {
					if (!OpenRecoveryScript::Insert_ORS_Command("sideload\n"))
						break;
				} else if (strncmp(argptr, "stages", strlen("stages")) == 0) {
					LOGINFO("ignoring stages command\n");
				}
			} else if (*argptr == 'r') {
				if (strncmp(argptr, "reason", strlen("reason")) == 0) {
					ptr = argptr + strlen("reason") + 1;
					gui_print("%s\n", ptr);
				}
			}
		}
		printf("\n");
	}

	if (crash_counter == 0) {
		property_list(Print_Prop, NULL);
		printf("\n");
	} else {
		printf("twrp.crash_counter=%d\n", crash_counter);
	}

	// Check for and run startup script if script exists
	TWFunc::check_and_run_script("/sbin/runatboot.sh", "boot");
	TWFunc::check_and_run_script("/sbin/postrecoveryboot.sh", "boot");

#ifdef TW_INCLUDE_INJECTTWRP
	// Back up TWRP Ramdisk if needed:
	TWPartition* Boot = PartitionManager.Find_Partition_By_Path("/boot");
	LOGINFO("Backing up TWRP ramdisk...\n");
	if (Boot == NULL || Boot->Current_File_System != "emmc")
		TWFunc::Exec_Cmd("injecttwrp --backup /tmp/backup_recovery_ramdisk.img");
	else {
		string injectcmd = "injecttwrp --backup /tmp/backup_recovery_ramdisk.img bd=" + Boot->Actual_Block_Device;
		TWFunc::Exec_Cmd(injectcmd);
	}
	LOGINFO("Backup of TWRP ramdisk done.\n");
#endif

	TWFunc::Update_Log_File();
	// Offer to decrypt if the device is encrypted
	if (DataManager::GetIntValue(TW_IS_ENCRYPTED) != 0) {
		if (SkipDecryption) {
			LOGINFO("Skipping decryption\n");
		} else {
			LOGINFO("Is encrypted, do decrypt page first\n");
			if (gui_startPage("decrypt", 1, 1) != 0) {
				LOGERR("Failed to start decrypt GUI page.\n");
			} else {
				// Check for and load custom theme if present
				gui_loadCustomResources();
			}
		}
	} else if (datamedia) {
		if (tw_get_default_metadata(DataManager::GetSettingsStoragePath().c_str()) != 0) {
			LOGINFO("Failed to get default contexts and file mode for storage files.\n");
		} else {
			LOGINFO("Got default contexts and file mode for storage files.\n");
		}
	}

	// Read the settings file
	DataManager::ReadSettingsFile();
	PageManager::LoadLanguage(DataManager::GetStrValue("tw_language"));
	GUIConsole::Translate_Now();

	// Fixup the RTC clock on devices which require it
	if (crash_counter == 0)
		TWFunc::Fixup_Time_On_Boot();

	// Run any outstanding OpenRecoveryScript
	if (DataManager::GetIntValue(TW_IS_ENCRYPTED) == 0 && (TWFunc::Path_Exists(SCRIPT_FILE_TMP) || TWFunc::Path_Exists(SCRIPT_FILE_CACHE))) {
		OpenRecoveryScript::Run_OpenRecoveryScript();
	}

#ifdef TW_HAS_MTP
	char mtp_crash_check[PROPERTY_VALUE_MAX];
	property_get("mtp.crash_check", mtp_crash_check, "0");
	if (DataManager::GetIntValue("tw_mtp_enabled")
			&& !strcmp(mtp_crash_check, "0") && !crash_counter
			&& (!DataManager::GetIntValue(TW_IS_ENCRYPTED) || DataManager::GetIntValue(TW_IS_DECRYPTED))) {
		property_set("mtp.crash_check", "1");
		LOGINFO("Starting MTP\n");
		if (!PartitionManager.Enable_MTP())
			PartitionManager.Disable_MTP();
		else
			gui_msg("mtp_enabled=MTP Enabled");
		property_set("mtp.crash_check", "0");
	} else if (strcmp(mtp_crash_check, "0")) {
		gui_warn("mtp_crash=MTP Crashed, not starting MTP on boot.");
		DataManager::SetValue("tw_mtp_enabled", 0);
		PartitionManager.Disable_MTP();
	} else if (crash_counter == 1) {
		LOGINFO("TWRP crashed; disabling MTP as a precaution.\n");
		PartitionManager.Disable_MTP();
	}
#endif

#ifndef TW_OEM_BUILD
	// Check if system has never been changed
	TWPartition* sys = PartitionManager.Find_Partition_By_Path("/system");
	TWPartition* ven = PartitionManager.Find_Partition_By_Path("/vendor");

	if (sys) {
		if ((DataManager::GetIntValue("tw_mount_system_ro") == 0 && sys->Check_Lifetime_Writes() == 0) || DataManager::GetIntValue("tw_mount_system_ro") == 2) {
			if (DataManager::GetIntValue("tw_never_show_system_ro_page") == 0) {
				DataManager::SetValue("tw_back", "main");
				if (gui_startPage("system_readonly", 1, 1) != 0) {
					LOGERR("Failed to start system_readonly GUI page.\n");
				}
			} else if (DataManager::GetIntValue("tw_mount_system_ro") == 0) {
				sys->Change_Mount_Read_Only(false);
				if (ven)
					ven->Change_Mount_Read_Only(false);
			}
		} else if (DataManager::GetIntValue("tw_mount_system_ro") == 1) {
			// Do nothing, user selected to leave system read only
		} else {
			sys->Change_Mount_Read_Only(false);
			if (ven)
				ven->Change_Mount_Read_Only(false);
		}
	}
#endif
	twrpAdbBuFifo *adb_bu_fifo = new twrpAdbBuFifo();
	adb_bu_fifo->threadAdbBuFifo();

	// Launch the main GUI
	gui_start();

#ifndef TW_OEM_BUILD
	// Disable flashing of stock recovery
	TWFunc::Disable_Stock_Recovery_Replace();
#endif

	// Reboot
	TWFunc::Update_Intent_File(Send_Intent);
	delete adb_bu_fifo;
	TWFunc::Update_Log_File();
	gui_msg(Msg("rebooting=Rebooting..."));
	string Reboot_Arg;
	DataManager::GetValue("tw_reboot_arg", Reboot_Arg);
	if (Reboot_Arg == "recovery")
		TWFunc::tw_reboot(rb_recovery);
	else if (Reboot_Arg == "poweroff")
		TWFunc::tw_reboot(rb_poweroff);
	else if (Reboot_Arg == "bootloader")
		TWFunc::tw_reboot(rb_bootloader);
	else if (Reboot_Arg == "download")
		TWFunc::tw_reboot(rb_download);
	else
		TWFunc::tw_reboot(rb_system);

	return 0;
}