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a3a2667742
get_config(override_conffile = None,
override_http_debug = None,
override_apisrv = None)
Thus, it should be possible to use the osc module with one simple
conf.get_config() call. It is no longer required to set up the api url in the
config dict, and call conf.init_basicauth().
271 lines
9.2 KiB
Python
271 lines
9.2 KiB
Python
#!/usr/bin/python
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# Copyright (C) 2006 Peter Poeml / Novell Inc. All rights reserved.
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# This program is free software; it may be used, copied, modified
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# and distributed under the terms of the GNU General Public Licence,
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# either version 2, or (at your option) any later version.
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"""Read osc configuration and store it in a dictionary
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This module reads and parses ~/.oscrc. The resulting configuration is stored
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for later usage in a dictionary named 'config'.
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In the absence of .oscrc, it tries .netrc.
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If information is missing, it asks the user questions.
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After reading the config, urllib2 is initialized.
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The configuration dictionary could look like this:
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{'apisrv': 'https://api.opensuse.org/',
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'user': 'poeml',
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'auth_dict': {'api.opensuse.org': {'user': 'poeml', 'pass': 'secret'},
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'apitest.opensuse.org': {'user': 'poeml', 'pass': 'secret'},
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'foo.opensuse.org': {'user': 'foo', 'pass': 'foo'}},
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'build-cmd': '/usr/bin/build',
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'build-root': '/abuild/oscbuild-%(repo)s-%(arch)s',
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'packagecachedir': '/var/cache/osbuild',
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'su-wrapper': 'sudo',
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'urllist': ['http://download.opensuse.org/repositories/%(project)s/%(repository)s/%(arch)s/%(filename)s',
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'http://api.opensuse.org/rpm/%(project)s/%(repository)s/_repository/%(buildarch)s/%(name)s'],
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}
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"""
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import ConfigParser
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# being global to this module, this dict can be accessed from outside
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# it will hold the parsed configuration
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config = { }
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DEFAULTS = { 'apisrv': 'https://api.opensuse.org/',
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'scheme': 'https',
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'user': 'your_username',
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'packagecachedir': '/var/tmp/osbuild-packagecache',
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'su-wrapper': 'su -c',
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'build-cmd': '/usr/bin/build',
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'build-root': '/var/tmp/build-root',
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# default list of download URLs, which will be tried in order
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'urllist': [
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# the normal repo server, redirecting to mirrors
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'http://download.opensuse.org/repositories/%(project)s/%(repository)s/%(arch)s/%(filename)s',
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# direct access to "full" tree
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'%(scheme)s://%(apisrv)s/build/%(project)s/%(repository)s/%(buildarch)s/_repository/%(name)s',
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],
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'http_debug': '0',
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'cookiejar': '~/.osc_cookiejar',
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}
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boolean_opts = ['http_debug']
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new_conf_template = """
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[general]
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# URL to access API server, e.g. %(apisrv)s
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# you also need a section [%(apisrv)s] with the credentials
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#apisrv = %(apisrv)s
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# Downloaded packages are cached here. Must be writable by you.
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#packagecachedir = %(packagecachedir)s
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# Wrapper to call build as root (sudo, su -, ...)
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#su-wrapper = %(su-wrapper)s
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# rootdir to setup the chroot environment
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# can contain %%(repo)s and/or %%(arch)s for replacement, e.g.
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# /srv/oscbuild/%%(repo)s-%%(arch)s
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#build-root = %(build-root)s
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# show HTTP traffic useful for debugging
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#http_debug = 1
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[%(apisrv)s]
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user = %(user)s
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pass = %(pass)s
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"""
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account_not_configured_text ="""
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Your user account / password are not configured yet.
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You will be asked for them below, and they will be stored in
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%s for future use.
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"""
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config_incomplete_text = """
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Your configuration file %s is not complete.
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Make sure that it has a [general] section.
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(You can copy&paste the below. Some commented defaults are shown.)
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"""
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cookiejar = None
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def parse_apisrv_url(scheme, apisrv):
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import urlparse
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if apisrv.startswith('http://') or apisrv.startswith('https://'):
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return urlparse.urlsplit(apisrv)[0:2]
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else:
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return scheme, apisrv
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def init_basicauth(config):
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"""initialize urllib2 with the credentials for Basic Authentication"""
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from osc.core import __version__
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import os, urllib2
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import cookielib
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global cookiejar
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# HTTPS proxy is not supported by urllib2. It only leads to an error
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# or, at best, a warning.
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# https://bugzilla.novell.com/show_bug.cgi?id=214983
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# https://bugzilla.novell.com/show_bug.cgi?id=298378
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if 'https_proxy' in os.environ:
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del os.environ['https_proxy']
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if 'HTTPS_PROXY' in os.environ:
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del os.environ['HTTPS_PROXY']
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if config['http_debug']:
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# brute force
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def urllib2_debug_init(self, debuglevel=0):
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self._debuglevel = 1
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urllib2.AbstractHTTPHandler.__init__ = urllib2_debug_init
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authhandler = urllib2.HTTPBasicAuthHandler( \
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urllib2.HTTPPasswordMgrWithDefaultRealm())
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cookie_file = os.path.expanduser(config['cookiejar'])
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cookiejar = cookielib.LWPCookieJar(cookie_file)
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try:
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cookiejar.load(ignore_discard=True)
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except IOError:
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try:
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open(cookie_file, 'w').close()
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os.chmod(cookie_file, 0600)
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except:
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#print 'Unable to create cookiejar file: \'%s\'. Using RAM-based cookies.' % cookie_file
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cookiejar = cookielib.CookieJar()
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opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar), authhandler)
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urllib2.install_opener(opener)
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opener.addheaders = [('User-agent', 'osc/%s' % __version__)]
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# with None as first argument, it will always use this username/password
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# combination for urls for which arg2 (apisrv) is a super-url
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for host, auth in config['auth_dict'].iteritems():
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authhandler.add_password(None, host, auth['user'], auth['pass'])
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def get_config(override_conffile = None,
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override_http_debug = None,
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override_apisrv = None):
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"""do the actual work (see module documentation)"""
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import os
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import sys
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global config
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conffile = override_conffile or os.environ.get('OSC_CONFIG', '~/.oscrc')
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conffile = os.path.expanduser(conffile)
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if not os.path.exists(conffile):
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# okay, let's create a fresh config file
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# if credentials are found in .netrc, use those
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# otherwise ask
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config = DEFAULTS.copy()
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# try .netrc
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# the needed entry needs to look like this:
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# machine api.opensuse.org login your_login password your_pass
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# note that it is not suited for credentials containing spaces
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import netrc
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try:
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# XXX: apisrv is a URL now, thus requiring the "scheme" setting if https is to be used
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netrc_host = parse_apisrv_url(None, DEFAULTS['apisrv'])[1]
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config['user'], account, config['pass'] = \
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netrc.netrc().authenticators(netrc_host)
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print >>sys.stderr, 'Read credentials from %s.' % os.path.expanduser('~/.netrc')
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except (IOError, TypeError, netrc.NetrcParseError):
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#
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# last resort... ask the user
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#
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import getpass
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print >>sys.stderr, account_not_configured_text % conffile
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config['user'] = raw_input('Username: ')
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config['pass'] = getpass.getpass()
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print >>sys.stderr, 'Creating osc configuration file %s ...' % conffile
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fd = open(conffile, 'w')
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os.chmod(conffile, 0600)
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fd.write(new_conf_template % config)
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fd.close()
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print >>sys.stderr, 'done.'
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#print >>sys.stderr, ('Now re-run the command.')
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#sys.exit(0)
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# okay, we made sure that .oscrc exists
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cp = ConfigParser.SafeConfigParser(DEFAULTS)
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cp.read(conffile)
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if not cp.has_section('general'):
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# FIXME: it might be sufficient to just assume defaults?
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print >>sys.stderr, config_incomplete_text % conffile
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print >>sys.stderr, new_conf_template % DEFAULTS
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sys.exit(1)
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config = dict(cp.items('general', raw=1))
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config['scheme'], config['apisrv'] = \
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parse_apisrv_url(config['scheme'], config['apisrv'])
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for i in boolean_opts:
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try:
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if int(config.get(i)):
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config[i] = True
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else:
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config[i] = False
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except:
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sys.exit('option %s requires an integer value' % i)
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packagecachedir = os.path.expanduser(config['packagecachedir'])
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# transform 'url1, url2, url3' form into a list
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if type(config['urllist']) == str:
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config['urllist'] = [ i.strip() for i in config['urllist'].split(',') ]
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# holds multiple usernames and passwords
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auth_dict = { }
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for url in [ x for x in cp.sections() if x != 'general' ]:
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dummy, host = \
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parse_apisrv_url(config['scheme'], url)
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auth_dict[host] = { 'user': cp.get(url, 'user'),
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'pass': cp.get(url, 'pass') }
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# add the auth data we collected to the config dict
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config['auth_dict'] = auth_dict
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# override values which we were called with
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if override_http_debug:
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config['http_debug'] = override_http_debug
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if override_apisrv:
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config['scheme'], config['apisrv'] = \
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parse_apisrv_url(config['scheme'], override_apisrv)
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# to make the mess complete, set up the more convenient api url which we'll rather use
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config['apiurl'] = config['scheme'] + '://' + config['apisrv']
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# XXX unless config['user'] goes away (and is replaced with a handy function, or
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# config becomes an object, even better), set the global 'user' here as well:
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config['user'] = config['auth_dict'][config['apisrv']]['user']
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# finally, initialize urllib2 for to use the credentials for Basic Authentication
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init_basicauth(config)
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