# some primitives for checking stream contents == code # instruction effective address register displacement immediate # . op subop mod rm32 base index scale r32 # . 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes # compare all the data in a stream (ignoring the read pointer) stream-data-equal?: # f: (addr stream byte), s: (addr array byte) -> result/eax: boolean # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx 52/push-edx 56/push-esi 57/push-edi # esi = f 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi # eax = f->write 8b/copy 0/mod/indirect 6/rm32/esi . . . 0/r32/eax . . # copy *esi to eax # var maxf/edx: (addr byte) = &f->data[f->write] 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 0/index/eax . 2/r32/edx 0xc/disp8 . # copy esi+eax+12 to edx # var currf/esi: (addr byte) = f->data 81 0/subop/add 3/mod/direct 6/rm32/esi . . . . . 0xc/imm32 # add to esi # edi = s 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0xc/disp8 . # copy *(ebp+12) to edi $stream-data-equal?:compare-sizes: # if (f->write != s->size) return false 39/compare 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # compare *edi and eax 75/jump-if-!= $stream-data-equal?:false/disp8 # var currs/edi: (addr byte) = s->data 81 0/subop/add 3/mod/direct 7/rm32/edi . . . . . 4/imm32 # add to edi # var eax: byte = 0 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax # var ecx: byte = 0 31/xor 3/mod/direct 1/rm32/ecx . . . 1/r32/ecx . . # clear ecx $stream-data-equal?:loop: # if (currf >= maxf) return true 39/compare 3/mod/direct 6/rm32/esi . . . 2/r32/edx . . # compare esi with edx 73/jump-if-addr>= $stream-data-equal?:true/disp8 # AL = *currs 8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 0/r32/AL . . # copy byte at *esi to AL # CL = *curr 8a/copy-byte 0/mod/indirect 7/rm32/edi . . . 1/r32/CL . . # copy byte at *edi to CL # if (eax != ecx) return false 39/compare 3/mod/direct 0/rm32/eax . . . 1/r32/ecx . . # compare eax and ecx 75/jump-if-!= $stream-data-equal?:false/disp8 # ++f 46/increment-esi # ++curr 47/increment-edi eb/jump $stream-data-equal?:loop/disp8 $stream-data-equal?:false: b8/copy-to-eax 0/imm32 eb/jump $stream-data-equal?:end/disp8 $stream-data-equal?:true: b8/copy-to-eax 1/imm32 $stream-data-equal?:end: # . restore registers 5f/pop-to-edi 5e/pop-to-esi 5a/pop-to-edx 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-stream-data-equal: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # write(_test-stream, "Abc") # . . push args 68/push "Abc"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = stream-data-equal?(_test-stream, "Abc") # . . push args 68/push "Abc"/imm32 68/push _test-stream/imm32 # . . call e8/call stream-data-equal?/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # check-ints-equal(eax, 1, msg) # . . push args 68/push "F - test-stream-data-equal"/imm32 68/push 1/imm32 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return test-stream-data-equal-2: # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # write(_test-stream, "Abc") # . .
# Copyright (C) 2009, 2010 Roman Zimbelmann <romanz@lavabit.com>
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
if __name__ == '__main__': from __init__ import init; init()
from os.path import realpath, join, dirname
from ranger import fsobject
from ranger.fsobject.file import File
from ranger.fsobject.directory import Directory
from ranger.shared.settings import SettingsAware
SettingsAware._setup()
TESTDIR = realpath(join(dirname(__file__), 'testdir'))
TESTFILE = join(TESTDIR, 'testfile5234148')
NONEXISTANT_DIR = join(TESTDIR, 'nonexistant')
import unittest
class Test1(unittest.TestCase):
def test_initial_condition(self):
# Check for the expected initial condition
dir = Directory(TESTDIR)
self.assertEqual(dir.path, TESTDIR)
self.assertFalse(dir.content_loaded)
self.assertEqual(dir.filenames, None)
self.assertEqual(dir.files, None)
self.assertRaises(fsobject.NotLoadedYet, len, dir)
def test_after_content_loaded(self):
import os
# Check whether the directory has the correct list of filenames.
dir = Directory(TESTDIR)
dir.load_content()
self.assertTrue(dir.exists)
self.assertEqual(type(dir.filenames), list)
# Get the filenames you expect it to have and sort both before
# comparing. I don't expect any order after only loading the filenames.
assumed_filenames = os.listdir(TESTDIR)
assumed_filenames = list(map(lambda str: os.path.join(TESTDIR, str),
assumed_filenames))
assumed_filenames.sort()
dir.filenames.sort()
self.assertTrue(len(dir) > 0)
self.assertEqual(dir.filenames, assumed_filenames)
# build a file object for each file in the list assumed_filenames
# and find exactly one equivalent in dir.files
for name in assumed_filenames:
f = File(name)
f.load()
for dirfile in dir.files:
if (f.path == dirfile.path and f.stat == dirfile.stat):
break
else:
self.fail("couldn't find file {0}".format(name))
def test_nonexistant_dir(self):
dir = Directory(NONEXISTANT_DIR)
dir.load_content()
self.assertTrue(dir.content_loaded)
self.assertFalse(dir.exists)
self.assertFalse(dir.accessible)
self.assertEqual(dir.filenames, None)
self.assertRaises(fsobject.NotLoadedYet, len, dir)
def test_load_if_outdated(self):
import os
import time
# modify the directory. If the time between the last modification
# was within the filesystems resolution of mtime, we should have a reload
def modify_dir():
open(TESTFILE, 'w').close()
os.unlink(TESTFILE)
def mtime():
return os.stat(TESTDIR).st_mtime
dir = Directory(TESTDIR)
dir.load()
# If the modification happens to be in the same second as the
# last modification, it will result in mtime having the same
# integer value. So we wait until the resolution is exceeded
# and mtime differs.
old_mtime = mtime()
for i in range(50):
modify_dir()
if old_mtime != mtime(): break
time.sleep(0.1)
else:
# fail after 5 seconds of trying
self.fail(
"Cannot perform test: mtime of TESTDIR is not being updated.")
self.assertTrue(dir.load_if_outdated())
if __name__ == '__main__':
unittest.main()