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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.
*/
#include <unistd.h>
#include <dirent.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include "ui.h"
#include "cutils/properties.h"
#include "install.h"
#include "common.h"
#include "adb_install.h"
#include "minadbd/fuse_adb_provider.h"
#include "fuse_sideload.h"
static RecoveryUI* ui = NULL;
static pthread_t sideload_thread;
static void
set_usb_driver(bool enabled) {
int fd = open("/sys/class/android_usb/android0/enable", O_WRONLY);
if (fd < 0) {
ui->Print("failed to open driver control: %s\n", strerror(errno));
return;
}
if (TEMP_FAILURE_RETRY(write(fd, enabled ? "1" : "0", 1)) == -1) {
ui->Print("failed to set driver control: %s\n", strerror(errno));
}
if (close(fd) < 0) {
ui->Print("failed to close driver control: %s\n", strerror(errno));
}
}
static void
stop_adbd() {
property_set("ctl.stop", "adbd");
set_usb_driver(false);
}
static void
maybe_restart_adbd() {
if (is_ro_debuggable()) {
ui->Print("Restarting adbd...\n");
set_usb_driver(true);
property_set("ctl.start", "adbd");
}
}
struct sideload_data {
bool* wipe_cache;
const char* install_file;
bool cancel;
int result;
};
static struct sideload_data sideload_data;
// How long (in seconds) we wait for the host to start sending us a
// package, before timing out.
#define ADB_INSTALL_TIMEOUT 300
void *adb_sideload_thread(void* v) {
pid_t child;
if ((child = fork()) == 0) {
execl("/sbin/recovery", "recovery", "--adbd", NULL);
_exit(-1);
}
time_t start_time = time(NULL);
time_t now = start_time;
// FUSE_SIDELOAD_HOST_PATHNAME will start to exist once the host
// connects and starts serving a package. Poll for its
// appearance. (Note that inotify doesn't work with FUSE.)
int result = INSTALL_NONE;
int status = -1;
struct stat st;
while (now - start_time < ADB_INSTALL_TIMEOUT) {
/*
* Exit if either:
* - The adb child process dies, or
* - The ui tells us to cancel
*/
if (kill(child, 0) != 0) {
result = INSTALL_ERROR;
break;
}
if (sideload_data.cancel) {
break;
}
status = stat(FUSE_SIDELOAD_HOST_PATHNAME, &st);
if (status == 0) {
break;
}
if (errno != ENOENT && errno != ENOTCONN) {
ui->Print("\nError %s waiting for package\n\n", strerror(errno));
result = INSTALL_ERROR;
break;
}
sleep(1);
now = time(NULL);
}
if (status == 0) {
// Signal UI thread that we can no longer cancel
ui->CancelWaitKey();
result = install_package(FUSE_SIDELOAD_HOST_PATHNAME,
sideload_data.wipe_cache,
sideload_data.install_file,
false);
sideload_data.result = result;
}
// Ensure adb exits
kill(child, SIGTERM);
waitpid(child, &status, 0);
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
if (WEXITSTATUS(status) == 3) {
ui->Print("\nYou need adb 1.0.32 or newer to sideload\nto this device.\n\n");
} else if (!WIFSIGNALED(status)) {
ui->Print("\n(adbd status %d)\n", WEXITSTATUS(status));
}
}
LOGI("sideload thread finished\n");
return NULL;
}
void
start_sideload(RecoveryUI* ui_, bool* wipe_cache, const char* install_file) {
modified_flash = true;
ui = ui_;
stop_adbd();
set_usb_driver(true);
ui->Print("\n\nNow send the package you want to apply\n"
"to the device with \"adb sideload <filename>\"...\n");
sideload_data.wipe_cache = wipe_cache;
sideload_data.install_file = install_file;
sideload_data.cancel = false;
sideload_data.result = INSTALL_NONE;
pthread_create(&sideload_thread, NULL, &adb_sideload_thread, NULL);
}
void stop_sideload() {
sideload_data.cancel = true;
}
int wait_sideload() {
pthread_join(sideload_thread, NULL);
ui->FlushKeys();
maybe_restart_adbd();
return sideload_data.result;
}
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