def exec_pipe(args):
if not sys.stdin.isatty():
fd = fcntl.open(args.path, openfile.O_WRONLY)
if fd == -1:
fd = fcntl.creat(
args.path,
inodetable.S_IWGRP | inodetable.S_IRGRP | inodetable.S_IWUSR
| inodetable.S_IRUSR | inodetable.S_IROTH)
if fd == -1:
print("Can't open or create file.")
return
for l in sys.stdin:
buf = l.encode(encoding='utf-8')
fcntl.write(fd, buf, len(buf))
fcntl.close(fd)
fd = fcntl.open(args.path, openfile.O_RDONLY)
if fd == -1:
print("Can't open file.")
return
filesize = sys_stat.stat(args.path)[4]
if filesize > 0:
buf = fcntl.read(fd, filesize)
print(buf.decode(encoding='utf-8'))
fcntl.close(fd)
def useradd_exec(args):
passwd_fd = fcntl.open('/etc/passwd', openfile.O_RDWR)
group_fd = fcntl.open('/etc/group', openfile.O_RDWR)
if passwd_fd == -1:
print('Only root can add users.')
return
print('[useradd] password for ' + args.username + ':')
upass = getpass('Enter new ' + args.username + ' password:'******'Retype new ' + args.username + ' password:'******'You typed password incorrectly. Type again:')
upass = getpass('Enter new ' + args.username + ' password:'******'Retype new ' + args.username + ' password:'******'/etc/passwd')[4]
f = fcntl.read(passwd_fd, filesize).decode(encoding='ASCII')
users = tuple(tuple(l.split(':')) for l in f.splitlines() if l[0] != '#')
last_uid = int(users[-1][2])
filesize = sys_stat.stat('/etc/group')[4]
f = fcntl.read(group_fd, filesize).decode(encoding='ASCII')
groups = tuple(tuple(l.split(':')) for l in f.splitlines() if l[0] != '#')
last_gid = int(groups[-1][1])
userline = (':'.join([
args.username,
hashlib.sha224(upass.encode()).hexdigest(),
str(last_uid + 1),
str(last_gid + 1)
]) + ':\n').encode(encoding='ASCII')
fcntl.write(passwd_fd, userline, len(userline))
groupline = (':'.join([args.username, str(last_gid + 1)]) +
':\n').encode(encoding='ASCII')
fcntl.write(group_fd, groupline, len(groupline))
fcntl.close(passwd_fd)
fcntl.close(group_fd)
def show_dir_list(path):
fd = dcntl.opendir(path)
if fd == -1:
print('Unable to open directory ' + path)
return
users = None
groups = None
if verbose:
passwd_fd = fcntl.open('/etc/passwd')
buf = fcntl.read(passwd_fd, sys_stat.stat('/etc/passwd')[4])
users = tuple(
tuple(l.split(':'))
for l in buf.decode(encoding='ASCII').splitlines()
if l.lstrip()[0] != '#')
fcntl.close(passwd_fd)
group_fd = fcntl.open('/etc/group')
buf = fcntl.read(group_fd, sys_stat.stat('/etc/group')[4])
groups = tuple(
tuple(l.split(':'))
for l in buf.decode(encoding='ASCII').splitlines()
if l.lstrip()[0] != '#')
fcntl.close(group_fd)
r = dcntl.readdir(fd)
while r != -1:
ino, reclen, name = r
if verbose:
show_dir_record(name, path, users, groups)
else:
print(name, end='\t')
print()
r = dcntl.readdir(fd)
dcntl.closedir(fd)
def recursive_remove_dir(path):
fd = dcntl.opendir(path)
rec = dcntl.readdir(fd)
try:
while rec != -1:
rec_path = path + '/' + rec[2]
mode = sys_stat.stat(rec_path)[1]
if sys_stat.is_dir(mode):
recursive_remove_dir(rec_path)
else:
if fcntl.unlink(rec_path) == -1:
raise StopRecursiveRemove(rec_path)
rec = dcntl.readdir(fd)
finally:
dcntl.closedir(fd)
dcntl.rmdir(path)
def exec_rm(args):
if not args.recursive:
if fcntl.unlink(args.path) == -1:
print("Can't remove " + args.path)
else:
st = sys_stat.stat(args.path)
if st != -1:
if sys_stat.is_dir(st[1]):
try:
recursive_remove_dir(args.path)
except StopRecursiveRemove as e:
print("Can't remove " + str(e) + ' file.')
else:
fcntl.unlink(args.path)
else:
print("Can't remove " + args.path)
def show_dir_record(name, path, users, groups):
st = sys_stat.stat(path + '/' + name)
if st != -1:
print('d' if sys_stat.is_dir(st[1]) else '-', end='')
print('r' if st[1] & inodetable.S_IRUSR else '-', end='')
print('w' if st[1] & inodetable.S_IWUSR else '-', end='')
print('x' if st[1] & inodetable.S_IXUSR else '-', end='')
print('r' if st[1] & inodetable.S_IRGRP else '-', end='')
print('w' if st[1] & inodetable.S_IWGRP else '-', end='')
print('x' if st[1] & inodetable.S_IXGRP else '-', end='')
print('r' if st[1] & inodetable.S_IROTH else '-', end='')
print('w' if st[1] & inodetable.S_IWOTH else '-', end='')
print('x' if st[1] & inodetable.S_IXOTH else '-', end=' ')
print('{0:4} {1:4} {2:4} {3:12} {4}'.format(
next(u[0] for u in users if int(u[2]) == st[2]),
next(g[0] for g in groups if int(g[1]) == st[3]), st[4],
time.strftime('%b %d %H:%M', time.gmtime(st[6])).lower(), name))
def exec_cp(args):
src_fd = fcntl.open(args.source)
if src_fd == -1:
print("Can't open " + args.source)
return
fcntl.unlink(args.dest)
dst_fd = fcntl.creat(
args.dest, inodetable.S_IRUSR | inodetable.S_IWUSR | inodetable.S_IRGRP
| inodetable.S_IWGRP | inodetable.S_IROTH)
if dst_fd == -1:
print("Can't open or create " + args.dest)
return
buf = fcntl.read(src_fd, sys_stat.stat(args.source)[4])
fcntl.write(dst_fd, buf, len(buf))
fcntl.close(dst_fd)
fcntl.close(src_fd)
def userblock_exec(args):
passwd_fd = fcntl.open('/etc/passwd', openfile.O_RDWR)
if passwd_fd == -1:
print('Only root can block users.')
return
filesize = sys_stat.stat('/etc/passwd')[4]
f = fcntl.read(passwd_fd, filesize).decode(encoding='ASCII')
users = [l.split(':') for l in f.splitlines() if l[0] != '#']
for u in users:
if u[0] == args.username:
u[4] = 'nologin'
fcntl.seek(passwd_fd, 0)
userslines = [':'.join(u) + '\n' for u in users]
for l in userslines:
buf = l.encode(encoding='ASCII')
fcntl.write(passwd_fd, buf, len(buf))
fcntl.close(passwd_fd)