[英]How can I use Python to automate setting a password using the Unix pass command line program
I'm trying to automate setting new passwords using the Unix pass program. 我正在尝试使用Unix pass程序自动设置新密码。 I understand that there is a Python library, pexpect , that might help, but I would like to avoid using third-party libraries. 我知道有一个Python库pexpect可能会有所帮助,但我想避免使用第三方库。
When using a terminal, the flow looks like this: 使用终端时,流程如下所示:
$ pass insert --force gmail
>> Enter password for gmail: <type in password using masked prompt>
>> Retype password for gmail: <reenter password>
What I would like my function to do: 我想要我的功能做什么:
pass insert --force {entry_name}
运行命令pass insert --force {entry_name}
Issues: 问题:
I'm stuck on step 2. The subprocess either hangs indefinitely, times out with an error, or produces no output. 我被困在第2步。子进程无限期挂起,错误超时或不产生任何输出。
Attempts: 尝试次数:
Code : 代码 :
def set_pass_password(entry_name, password):
from subprocess import Popen, PIPE
command = ['pass', 'insert', '--force', entry_name]
sub = Popen(command, stdin=PIPE, stdout=PIPE, stderr=PIPE, universal_newlines=True)
# At this point I assume that the command has run, and that there is an "Enter password..." message
message = sub.stdout.read() # also tried readline() and readlines()
print(message) # never happens, because process hangs on stdout.read()
if 'password for {}'.format(entry_name) in message:
err, msg = sub.communicate(input='{p}\n{p}\n'.format(p=password))
print('errors: {}\nmessage: {}'.format(err, msg))
Edit: the original answer was about passwd
, which is what's used to set passwords. 编辑:最初的答案是关于passwd
,它是用来设置密码的。 I noticed late that you use pass
, which is a keystore (doesn't actually change the Unix password). 后来我注意到您使用pass
,这是一个密钥库(实际上并没有更改Unix密码)。 The pass
program works differently and will not print a prompt if stdin
is not a tty. 如果stdin
不是tty, 则 pass
程序的工作方式有所不同,并且不会显示提示。 Therefore the following very simple program works: 因此,以下非常简单的程序可以工作:
def set_pass_password(entry_name, password):
from subprocess import Popen, PIPE
command = ['pass', 'insert', '--force', entry_name]
sub = Popen(command, bufsize=0, stdin=PIPE, stdout=PIPE, stderr=PIPE)
err, msg = sub.communicate(input='{p}\n{p}\n'.format(p=password))
print('errors: {}\nmessage: {}'.format(err, msg))
if __name__ == "__main__":
set_pass_password("ttt", "ttt123asdqwe")
(you will see that both stderr and stdout are empty, if the command succeeded). (如果命令成功,您将看到stderr和stdout均为空)。
For the passwd
command: 对于passwd
命令:
FYI: the passwd
command outputs the prompt to stderr
, not stdout
. 仅供参考: passwd
命令将提示输出到stderr
,而不是stdout
。
NOTE: rather than sending the password twice in the same 'write', you might need to wait for the second prompt before sending the password again. 注意:您可能需要等待第二个提示,然后才能再次发送密码,而不是在同一“写”中两次发送密码。
For this simple case, code similar to yours should work, but in general you should use select
on all the pipes and send/receive data when the other side is ready, so you don't get deadlocks. 对于这种简单的情况,与您的代码相似的代码应该可以工作,但是通常您应该在所有管道上使用select
并在另一侧准备好时发送/接收数据,因此不会出现死锁。
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