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e46fd3401e
ipa help topics will show all topics (equivalent to ipa help) ipa help commands will show list of all available commands
759 lines
23 KiB
Python
759 lines
23 KiB
Python
# Authors:
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# Jason Gerard DeRose <jderose@redhat.com>
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#
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# Copyright (C) 2008 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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Functionality for Command Line Interface.
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"""
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import re
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import textwrap
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import sys
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import getpass
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import code
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import optparse
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import socket
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import fcntl
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import termios
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import struct
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import frontend
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import backend
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import plugable
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import util
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from errors import PublicError, CommandError, HelpError, InternalError, NoSuchNamespaceError, ValidationError
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from constants import CLI_TAB
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from parameters import Password, Bytes
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from request import ugettext as _
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def to_cli(name):
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"""
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Takes a Python identifier and transforms it into form suitable for the
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Command Line Interface.
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"""
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assert isinstance(name, str)
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return name.replace('_', '-')
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def from_cli(cli_name):
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"""
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Takes a string from the Command Line Interface and transforms it into a
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Python identifier.
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"""
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return str(cli_name).replace('-', '_')
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class textui(backend.Backend):
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"""
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Backend plugin to nicely format output to stdout.
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"""
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def get_tty_width(self):
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"""
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Return the width (in characters) of output tty.
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If stdout is not a tty, this method will return ``None``.
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"""
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# /usr/include/asm/termios.h says that struct winsize has four
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# unsigned shorts, hence the HHHH
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if sys.stdout.isatty():
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try:
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winsize = fcntl.ioctl(sys.stdout, termios.TIOCGWINSZ,
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struct.pack('HHHH', 0, 0, 0, 0))
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return struct.unpack('HHHH', winsize)[1]
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except IOError:
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return None
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def max_col_width(self, rows, col=None):
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"""
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Return the max width (in characters) of a specified column.
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For example:
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>>> ui = textui()
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>>> rows = [
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... ('a', 'package'),
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... ('an', 'egg'),
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... ]
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>>> ui.max_col_width(rows, col=0) # len('an')
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2
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>>> ui.max_col_width(rows, col=1) # len('package')
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7
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>>> ui.max_col_width(['a', 'cherry', 'py']) # len('cherry')
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6
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"""
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if type(rows) not in (list, tuple):
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raise TypeError(
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'rows: need %r or %r; got %r' % (list, tuple, rows)
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)
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if len(rows) == 0:
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return 0
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if col is None:
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return max(len(row) for row in rows)
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return max(len(row[col]) for row in rows)
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def __get_encoding(self, stream):
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assert stream in (sys.stdin, sys.stdout)
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if stream.encoding is None:
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return 'UTF-8'
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return stream.encoding
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def decode(self, value):
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"""
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Decode text from stdin.
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"""
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if type(value) is str:
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encoding = self.__get_encoding(sys.stdin)
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return value.decode(encoding)
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elif type(value) in (list, tuple):
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return tuple(self.decode(v) for v in value)
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return value
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def encode(self, unicode_text):
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"""
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Encode text for output to stdout.
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"""
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assert type(unicode_text) is unicode
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encoding = self.__get_encoding(sys.stdout)
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return unicode_text.encode(encoding)
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def choose_number(self, n, singular, plural=None):
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if n == 1 or plural is None:
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return singular % n
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return plural % n
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def print_plain(self, string):
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"""
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Print exactly like ``print`` statement would.
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"""
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print string
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def print_line(self, text, width=None):
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"""
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Force printing on a single line, using ellipsis if needed.
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For example:
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>>> ui = textui()
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>>> ui.print_line('This line can fit!', width=18)
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This line can fit!
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>>> ui.print_line('This line wont quite fit!', width=18)
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This line wont ...
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The above example aside, you normally should not specify the
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``width``. When you don't, it is automatically determined by calling
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`textui.get_tty_width()`.
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"""
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if width is None:
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width = self.get_tty_width()
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if width is not None and width < len(text):
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text = text[:width - 3] + '...'
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print text
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def print_paragraph(self, text, width=None):
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"""
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Print a paragraph, automatically word-wrapping to tty width.
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For example:
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>>> text = '''
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... Python is a dynamic object-oriented programming language that can
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... be used for many kinds of software development.
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... '''
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>>> ui = textui()
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>>> ui.print_paragraph(text, width=45)
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Python is a dynamic object-oriented
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programming language that can be used for
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many kinds of software development.
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The above example aside, you normally should not specify the
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``width``. When you don't, it is automatically determined by calling
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`textui.get_tty_width()`.
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The word-wrapping is done using the Python ``textwrap`` module. See:
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http://docs.python.org/library/textwrap.html
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"""
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if width is None:
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width = self.get_tty_width()
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for line in textwrap.wrap(text.strip(), width):
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print line
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def print_indented(self, text, indent=1):
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"""
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Print at specified indentation level.
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For example:
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>>> ui = textui()
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>>> ui.print_indented('One indentation level.')
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One indentation level.
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>>> ui.print_indented('Two indentation levels.', indent=2)
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Two indentation levels.
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>>> ui.print_indented('No indentation.', indent=0)
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No indentation.
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"""
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print (CLI_TAB * indent + text)
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def print_keyval(self, rows, indent=1):
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"""
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Print (key = value) pairs, one pair per line.
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For example:
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>>> items = [
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... ('in_server', True),
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... ('mode', 'production'),
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... ]
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>>> ui = textui()
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>>> ui.print_keyval(items)
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in_server = True
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mode = 'production'
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>>> ui.print_keyval(items, indent=0)
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in_server = True
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mode = 'production'
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Also see `textui.print_indented`.
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"""
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for (key, value) in rows:
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self.print_indented('%s = %r' % (key, value), indent)
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def print_attribute(self, attr, value, indent=1):
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"""
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Print an ldap attribute.
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For example:
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>>> attr = 'dn'
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>>> ui = textui()
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>>> ui.print_attribute(attr, u'dc=example,dc=com')
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dn: dc=example,dc=com
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>>> attr = 'objectClass'
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>>> ui.print_attribute(attr, [u'top', u'someClass'])
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objectClass: top
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objectClass: someClass
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"""
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assert isinstance(attr, basestring)
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if not isinstance(value, (list, tuple)):
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value = [value]
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for v in value:
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self.print_indented('%s: %s' % (attr, v), indent)
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def print_entry(self, entry, indent=1):
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"""
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Print an ldap entry dict.
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For example:
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>>> entry = dict(sn='Last', givenname='First', uid='flast')
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>>> ui = textui()
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>>> ui.print_entry(entry)
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givenname: First
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sn: Last
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uid: flast
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"""
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assert type(entry) is dict
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if entry.get('dn'):
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self.print_attribute('dn', entry['dn'], indent)
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del entry['dn']
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for key in sorted(entry):
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self.print_attribute(key, entry[key], indent)
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def print_dashed(self, string, above=True, below=True, indent=0, dash='-'):
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"""
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Print a string with a dashed line above and/or below.
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For example:
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>>> ui = textui()
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>>> ui.print_dashed('Dashed above and below.')
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-----------------------
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Dashed above and below.
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-----------------------
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>>> ui.print_dashed('Only dashed below.', above=False)
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Only dashed below.
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------------------
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>>> ui.print_dashed('Only dashed above.', below=False)
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------------------
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Only dashed above.
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"""
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assert isinstance(dash, basestring)
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assert len(dash) == 1
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dashes = dash * len(string)
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if above:
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self.print_indented(dashes, indent)
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self.print_indented(string, indent)
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if below:
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self.print_indented(dashes, indent)
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def print_h1(self, text):
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"""
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Print a primary header at indentation level 0.
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For example:
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>>> ui = textui()
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>>> ui.print_h1('A primary header')
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================
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A primary header
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================
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"""
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self.print_dashed(text, indent=0, dash='=')
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def print_h2(self, text):
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"""
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Print a secondary header at indentation level 1.
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For example:
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>>> ui = textui()
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>>> ui.print_h2('A secondary header')
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------------------
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A secondary header
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------------------
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"""
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self.print_dashed(text, indent=1, dash='-')
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def print_name(self, name):
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"""
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Print a command name.
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The typical use for this is to mark the start of output from a
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command. For example, a hypothetical ``show_status`` command would
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output something like this:
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>>> ui = textui()
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>>> ui.print_name('show_status')
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------------
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show-status:
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------------
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"""
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self.print_dashed('%s:' % to_cli(name))
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def print_count(self, count, singular, plural=None):
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"""
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Print a summary count.
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The typical use for this is to print the number of items returned
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by a command, especially when this return count can vary. This
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preferably should be used as a summary and should be the final text
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a command outputs.
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For example:
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>>> ui = textui()
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>>> ui.print_count(1, '%d goose', '%d geese')
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-------
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1 goose
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-------
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>>> ui.print_count(['Don', 'Sue'], 'Found %d user', 'Found %d users')
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-------------
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Found 2 users
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-------------
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If ``count`` is not an integer, it must be a list or tuple, and then
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``len(count)`` is used as the count.
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"""
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if type(count) is not int:
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assert type(count) in (list, tuple)
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count = len(count)
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self.print_dashed(
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self.choose_number(count, singular, plural)
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)
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def print_error(self, text):
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print ' ** %s **' % text
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def prompt(self, label, default=None, get_values=None):
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"""
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Prompt user for input.
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"""
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# TODO: Add tab completion using readline
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if default is None:
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prompt = u'%s: ' % label
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else:
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prompt = u'%s [%s]: ' % (label, default)
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return self.decode(
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raw_input(self.encode(prompt))
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)
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def read_password(self, label):
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"""
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Read a password either by prompting the user or from stdin depending
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on whether there is a tty.
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This will let you do something like: echo -e "foo\nfoo\n" | ipa passwd
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"""
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if sys.stdin.isatty():
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return getpass.getpass(label)
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else:
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return sys.stdin.readline().strip()
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def prompt_password(self, label):
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"""
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Prompt user for a password.
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"""
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try:
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while True:
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pw1 = self.read_password('%s: ' % label)
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pw2 = self.read_password(
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_('Enter %(label)s again to verify: ') % dict(label=label)
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)
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if pw1 == pw2:
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return self.decode(pw1)
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self.print_error( _('Passwords do not match!'))
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except KeyboardInterrupt:
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print ''
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self.print_error(_('Cancelled.'))
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class help(frontend.Command):
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"""
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Display help for a command or topic.
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"""
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takes_args = (Bytes('command?'),)
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_PLUGIN_BASE_MODULE = 'ipalib.plugins'
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def _get_command_module(self, cmd_plugin_proxy):
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"""
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Return bare module name where command represented by PluginProxy
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instance is defined. Return None if command isn't defined in
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a plugin module (we consider these commands to be builtins).
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"""
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# get representation in the form of 'base_module.bare_module.command()'
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r = repr(cmd_plugin_proxy)
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# skip base module part and the following dot
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start = r.find(self._PLUGIN_BASE_MODULE)
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if start == -1:
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# command module isn't a plugin module, it's a builtin
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return None
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start += len(self._PLUGIN_BASE_MODULE) + 1
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# parse bare module name
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end = r.find('.', start)
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return r[start:end]
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def finalize(self):
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# {plugin_module: [mcl, commands]}
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self._topics = {}
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# [builtin_commands]
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self._builtins = []
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# build help topics
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for c in self.Command():
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topic = self._get_command_module(c)
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if topic:
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self._topics.setdefault(topic, [0]).append(c)
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# compute maximum length of command in topic
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mcl = max((self._topics[topic][0], len(c.name)))
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self._topics[topic][0] = mcl
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else:
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self._builtins.append(c)
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# compute maximum topic length
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self._mtl = max(
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len(s) for s in (self._topics.keys() + self._builtins)
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)
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super(help, self).finalize()
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def run(self, key):
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name = from_cli(key)
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if key is None or name == "topics":
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self.print_topics()
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return
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if name in self._topics:
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self.print_commands(name)
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elif name in self.Command:
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cmd = self.Command[name]
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print 'Purpose: %s' % cmd.doc
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self.Backend.cli.build_parser(cmd).print_help()
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elif name == "commands":
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mcl = max(len(s) for s in (self.Command))
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for cname in self.Command:
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cmd = self.Command[cname]
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print '%s %s' % (to_cli(cmd.name).ljust(mcl), cmd.doc)
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else:
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raise HelpError(topic=name)
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def print_topics(self):
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topics = sorted(self._topics.keys())
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print 'Usage: ipa [global-options] COMMAND ...'
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print ''
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print 'Built-in commands:'
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for c in self._builtins:
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doc = (c.doc or '').strip().split('\n', 1)[0]
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print ' %s %s' % (to_cli(c.name).ljust(self._mtl), c.doc)
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print ''
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print 'Help topics:'
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for t in topics:
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m = '%s.%s' % (self._PLUGIN_BASE_MODULE, t)
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doc = (sys.modules[m].__doc__ or '').strip().split('\n', 1)[0]
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print ' %s %s' % (to_cli(t).ljust(self._mtl), doc)
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print ''
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print 'Try `ipa --help` for a list of global options.'
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def print_commands(self, topic):
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mcl = self._topics[topic][0]
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commands = self._topics[topic][1:]
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m = '%s.%s' % (self._PLUGIN_BASE_MODULE, topic)
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doc = (sys.modules[m].__doc__ or '').strip()
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print doc
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print ''
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print 'Related commands:'
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for c in commands:
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print ' %s %s' % (to_cli(c.name).ljust(mcl), c.doc)
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class console(frontend.Application):
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"""Start the IPA interactive Python console."""
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def run(self):
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code.interact(
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'(Custom IPA interactive Python console)',
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local=dict(api=self.api)
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)
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class show_api(frontend.Application):
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'Show attributes on dynamic API object'
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takes_args = ('namespaces*',)
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def run(self, namespaces):
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if namespaces is None:
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names = tuple(self.api)
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else:
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for name in namespaces:
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if name not in self.api:
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raise NoSuchNamespaceError(name=name)
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names = namespaces
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lines = self.__traverse(names)
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ml = max(len(l[1]) for l in lines)
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self.Backend.textui.print_name('run')
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first = True
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for line in lines:
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if line[0] == 0 and not first:
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print ''
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if first:
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first = False
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print '%s%s %r' % (
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|
' ' * line[0],
|
|
line[1].ljust(ml),
|
|
line[2],
|
|
)
|
|
if len(lines) == 1:
|
|
s = '1 attribute shown.'
|
|
else:
|
|
s = '%d attributes show.' % len(lines)
|
|
self.Backend.textui.print_dashed(s)
|
|
|
|
def __traverse(self, names):
|
|
lines = []
|
|
for name in names:
|
|
namespace = self.api[name]
|
|
self.__traverse_namespace('%s' % name, namespace, lines)
|
|
return lines
|
|
|
|
def __traverse_namespace(self, name, namespace, lines, tab=0):
|
|
lines.append((tab, name, namespace))
|
|
for member_name in namespace:
|
|
member = namespace[member_name]
|
|
lines.append((tab + 1, member_name, member))
|
|
if not hasattr(member, '__iter__'):
|
|
continue
|
|
for n in member:
|
|
attr = member[n]
|
|
if isinstance(attr, plugable.NameSpace) and len(attr) > 0:
|
|
self.__traverse_namespace(n, attr, lines, tab + 2)
|
|
|
|
|
|
cli_application_commands = (
|
|
help,
|
|
console,
|
|
show_api,
|
|
)
|
|
|
|
|
|
class Collector(object):
|
|
def __init__(self):
|
|
object.__setattr__(self, '_Collector__options', {})
|
|
|
|
def __setattr__(self, name, value):
|
|
if name in self.__options:
|
|
v = self.__options[name]
|
|
if type(v) is tuple:
|
|
value = v + (value,)
|
|
else:
|
|
value = (v, value)
|
|
self.__options[name] = value
|
|
object.__setattr__(self, name, value)
|
|
|
|
def __todict__(self):
|
|
return dict(self.__options)
|
|
|
|
|
|
class cli(backend.Executioner):
|
|
"""
|
|
Backend plugin for executing from command line interface.
|
|
"""
|
|
|
|
def run(self, argv):
|
|
if len(argv) == 0:
|
|
self.Command.help()
|
|
return
|
|
self.create_context()
|
|
(key, argv) = (argv[0], argv[1:])
|
|
name = from_cli(key)
|
|
if name not in self.Command:
|
|
raise CommandError(name=key)
|
|
cmd = self.Command[name]
|
|
kw = self.parse(cmd, argv)
|
|
if self.env.interactive:
|
|
self.prompt_interactively(cmd, kw)
|
|
result = self.execute(name, **kw)
|
|
if callable(cmd.output_for_cli):
|
|
for param in cmd.params():
|
|
if param.password and param.name in kw:
|
|
del kw[param.name]
|
|
(args, options) = cmd.params_2_args_options(**kw)
|
|
cmd.output_for_cli(self.api.Backend.textui, result, *args, **options)
|
|
|
|
def parse(self, cmd, argv):
|
|
parser = self.build_parser(cmd)
|
|
(collector, args) = parser.parse_args(argv, Collector())
|
|
options = collector.__todict__()
|
|
kw = cmd.args_options_2_params(*args, **options)
|
|
return dict(self.parse_iter(cmd, kw))
|
|
|
|
# FIXME: Probably move decoding to Command, use same method regardless of
|
|
# request source:
|
|
def parse_iter(self, cmd, kw):
|
|
"""
|
|
Decode param values if appropriate.
|
|
"""
|
|
for (key, value) in kw.iteritems():
|
|
param = cmd.params[key]
|
|
if isinstance(param, Bytes):
|
|
yield (key, value)
|
|
else:
|
|
yield (key, self.Backend.textui.decode(value))
|
|
|
|
def build_parser(self, cmd):
|
|
parser = optparse.OptionParser(
|
|
usage=' '.join(self.usage_iter(cmd))
|
|
)
|
|
for option in cmd.options():
|
|
kw = dict(
|
|
dest=option.name,
|
|
help=option.doc,
|
|
)
|
|
if option.password and self.env.interactive:
|
|
kw['action'] = 'store_true'
|
|
elif option.type is bool:
|
|
if option.default is True:
|
|
kw['action'] = 'store_false'
|
|
else:
|
|
kw['action'] = 'store_true'
|
|
else:
|
|
kw['metavar'] = metavar=option.__class__.__name__.upper()
|
|
o = optparse.make_option('--%s' % to_cli(option.cli_name), **kw)
|
|
parser.add_option(o)
|
|
return parser
|
|
|
|
def usage_iter(self, cmd):
|
|
yield 'Usage: %%prog [global-options] %s' % to_cli(cmd.name)
|
|
for arg in cmd.args():
|
|
if arg.password:
|
|
continue
|
|
name = to_cli(arg.cli_name).upper()
|
|
if arg.multivalue:
|
|
name = '%s...' % name
|
|
if arg.required:
|
|
yield name
|
|
else:
|
|
yield '[%s]' % name
|
|
|
|
def prompt_interactively(self, cmd, kw):
|
|
"""
|
|
Interactively prompt for missing or invalid values.
|
|
|
|
By default this method will only prompt for *required* Param that
|
|
have a missing or invalid value. However, if
|
|
``self.env.prompt_all`` is ``True``, this method will prompt for any
|
|
params that have a missing values, even if the param is optional.
|
|
"""
|
|
for param in cmd.params():
|
|
if param.password and (
|
|
kw.get(param.name, False) is True or param.name in cmd.args
|
|
):
|
|
kw[param.name] = \
|
|
self.Backend.textui.prompt_password(param.cli_name)
|
|
elif param.name not in kw:
|
|
if param.autofill:
|
|
kw[param.name] = param.get_default(**kw)
|
|
elif param.required or self.env.prompt_all:
|
|
default = param.get_default(**kw)
|
|
error = None
|
|
while True:
|
|
if error is not None:
|
|
print '>>> %s: %s' % (param.cli_name, error)
|
|
raw = self.Backend.textui.prompt(param.cli_name, default)
|
|
try:
|
|
value = param(raw, **kw)
|
|
if value is not None:
|
|
kw[param.name] = value
|
|
break
|
|
except ValidationError, e:
|
|
error = e.error
|
|
|
|
|
|
cli_plugins = (
|
|
cli,
|
|
textui,
|
|
console,
|
|
help,
|
|
)
|
|
|
|
|
|
def run(api):
|
|
error = None
|
|
try:
|
|
argv = api.bootstrap_with_global_options(context='cli')
|
|
for klass in cli_plugins:
|
|
api.register(klass)
|
|
api.load_plugins()
|
|
api.finalize()
|
|
api.Backend.cli.run(argv)
|
|
except KeyboardInterrupt:
|
|
print ''
|
|
api.log.info('operation aborted')
|
|
except PublicError, e:
|
|
error = e
|
|
except StandardError, e:
|
|
api.log.exception('%s: %s', e.__class__.__name__, str(e))
|
|
error = InternalError()
|
|
if error is not None:
|
|
assert isinstance(error, PublicError)
|
|
api.log.error(error.strerror)
|
|
sys.exit(error.errno)
|