Solve 'stat' command not available on some devices

[finfou]

As 'stat' command might be not available, I tried to use 'ls -l's output instead.

I used bellow script to test the new method:

1. detect /data/local/tmp which is executable 2. detect /data/local/tmp which isn't executable 3. /data which is not executable, on some device it return "file or directory doesn't found" and on others returns empty from stdout.

from uiautomator2 import adbutils
import os

adb = adbutils.Adb('4840a1ba')
dirs = ['/data/local/tmp', '/data/data/com.android.shell', '/data', '/data/local']
for dirname in dirs:
testpath = "%s/%s" % (dirname, 'permtest')
adb.shell('touch', testpath, raise_error=False)
adb.shell('chmod', '+x', testpath, raise_error=False)
content = adb.shell('ls', '-l', testpath, raise_error=False)
print('ls output: "%s"' % content)
if -1 !=content.find('x'):
print(dirname, 'is executable')
else:
print(dirname, 'is not executable')

Result1 from Z2

ls output: "-rw-rw-rw- shell shell 0 2018-07-11 19:41 permtest

"

/data/local/tmp is not executable

ls output: "-rwxrwxrwx shell shell 0 2018-07-11 19:41 permtest

"

/data/data/com.android.shell is executable

ls output: "/data/permtest: No such file or directory

"

/data is not executable

ls output: "/data/local/permtest: No such file or directory

"

/data/local is not executable

Result2 from Samsung S7 edge

ls output: "-rwxrwxrwx 1 shell shell 0 2018-07-11 19:42 /data/local/tmp/permtest

"

/data/local/tmp is executable

ls output: "-rwxrwxrwx 1 shell shell 0 2018-07-11 19:42 /data/data/com.android.shell/permtest

"

/data/data/com.android.shell is executable

ls output: ""

/data is not executable

ls output: ""

/data/local is not executable

[finfou]

BTW, the default atx-agent version provided by atx-server is still 0.3.3, the one provided by uiautomator2 is now 0.3.5. So when connected to server, there will be a downgrade, not sure if it's intended, so can wait for 0.3.5 become stable before update atx-server