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@ -25,16 +25,71 @@ import atexit
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import urllib2
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import argparse
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import yaml
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import time
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from hashlib import sha256
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from zipfile import ZipFile
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from distutils.version import LooseVersion
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"""downloader config sample:
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---
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name: foo
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urls:
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- url: https://foo.org/gitian/foo.zip
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version_url: https://foo.org/gitian/foo.ver
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rss:
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- url: https://foo.org/gitian/foo.rss
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xpath: //item/link/text()
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pattern: foo-(\d+.\d+.\d+)-linux.zip
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signers:
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0A82509767C7D4A5D14DA2301AE1D35043E08E54:
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weight: 40
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name: BlueMatt
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key: bluematt
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"""
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inject_config_string = "INJECT" + "CONFIG"
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injected_config = """INJECTCONFIG"""
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have_injected_config = injected_config != inject_config_string
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quiet = 0
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def check_name_and_version(out_manifest, old_manifest):
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if out_manifest['name'] != old_manifest['name']:
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print>>sys.stderr, "The old directory has a manifest for a different package"
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sys.exit(3)
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if LooseVersion(out_manifest['release']) < LooseVersion(old_manifest['release']):
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if quiet <= 1:
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print>>sys.stderr, "This is a downgrade from version %s to %s"%(old_manifest['release'],out_manifest['release'])
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if not args.force:
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print>>sys.stderr, "Use --force if you really want to downgrade"
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sys.exit(4)
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elif LooseVersion(out_manifest['release']) == LooseVersion(old_manifest['release']):
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if quiet <= 1:
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print>>sys.stderr, "This is a reinstall of version %s"%(old_manifest['release'])
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else:
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if quiet == 0:
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print>>sys.stderr, "Upgrading from version %s to %s"%(old_manifest['release'],out_manifest['release'])
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def copy_to_destination(from_path, to_path, out_manifest, old_manifest):
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for root, dirs, files in os.walk(from_path, topdown = True):
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rel = path.relpath(root, from_path)
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if not path.exists(path.join(to_path, rel)):
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os.mkdir(path.normpath(path.join(to_path, rel)))
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for f in files:
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shutil.copy2(path.join(root, f), path.join(to_path, rel, f))
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if old_manifest:
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removed = set(old_manifest['sums'].keys()).difference(out_manifest['sums'].keys())
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for f in removed:
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if path.exists(path.join(to_path, f)):
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os.unlink(path.join(to_path, f))
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f = file(path.join(to_path, '.gitian-manifest'), 'w')
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yaml.dump(out_manifest, f)
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f.close()
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def sha256sum(path):
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h = sha256()
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f = open(path)
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@ -159,7 +214,6 @@ def get_assertions(gpg_path, temp_dir, unpack_dir, file_names):
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print>>sys.stderr, " ", key
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else:
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print>>sys.stderr, 'No build assertions found'
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error = True
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manifest = { 'sums' : sums, 'release' : release, 'name': name, 'optionals': optionals }
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return (not error, assertions, manifest)
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@ -198,7 +252,7 @@ def check_assertions(config, assertions):
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total_weight += signers[key]['weight']
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if total_weight < config['minimum_weight']:
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print>>sys.stderr, "The total weight of signatures is %d, which is less than the minimum required %d"%(total_weight, config['minimum_weight'])
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return False
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return None
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return total_weight
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@ -234,7 +288,9 @@ parser.add_argument('-d', '--dest', metavar='DEST', type=str, required=False,
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help='the destination directory for unpacking')
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parser.add_argument('-q', '--quiet', action='append_const', const=1, default=[], help='be quiet')
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parser.add_argument('-f', '--force', action='store_true', help='force downgrades and such')
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parser.add_argument('-n', '--dryrun', action='store_true', help='do not actually copy to destination')
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parser.add_argument('-m', '--customize', metavar='OUTPUT', type=str, help='generate a customized version of the script with the given config')
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parser.add_argument('-w', '--wait', type=float, metavar='HOURS', help='observe a waiting period or use zero for no waiting')
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parser.add_argument('-g', '--gpg', metavar='GPG', type=str, help='path to GnuPG')
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parser.add_argument('-p', '--post', metavar='COMMAND', type=str, help='Run after a successful install')
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@ -266,6 +322,10 @@ dest_path = args.dest
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if not dest_path:
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parser.error('argument -d/--dest is required unless -m is specified')
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if args.wait is not None:
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config['waiting_period'] = args.wait
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gpg_path = args.gpg
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if not gpg_path:
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@ -274,13 +334,13 @@ if not gpg_path:
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rsses = []
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if args.url:
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urls = args.url
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urls = [{ 'url' : url, 'version_url' : None} for url in args.url]
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else:
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urls = config['urls']
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if config.has_key('rss'):
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rsses = config['rss']
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urls = config.get('urls')
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if not urls:
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parser.error('argument -u/--url is required since config does not specify it')
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if config.has_key('rss'):
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rsses = config['rss']
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# TODO: rss, atom, etc.
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@ -298,6 +358,31 @@ if path.exists(dest_path):
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old_manifest = yaml.load(f, OrderedDictYAMLLoader)
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f.close()
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if config.get('waiting_period', 0) > 0:
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waiting_file = path.join(dest_path, '.gitian-waiting')
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if path.exists(waiting_file):
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f = file(waiting_file, 'r')
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waiting = yaml.load(f)
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f.close()
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wait_start = waiting['time']
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out_manifest = waiting['out_manifest']
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waiting_path = waiting['waiting_path']
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wait_time = wait_start + config['waiting_period'] * 3600 - time.time()
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if wait_time > 0:
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print>>sys.stderr, "Waiting another %.2f hours before applying update in %s"%(wait_time / 3600, waiting_path)
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sys.exit(100)
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os.remove(waiting_file)
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if args.dryrun:
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print>>sys.stderr, "Dry run, not copying"
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else:
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copy_to_destination(path.join(waiting_path, 'unpack'), dest_path, out_manifest, old_manifest)
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if args.post:
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os.system(args.post)
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if quiet == 0:
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print>>sys.stderr, "Copied from waiting area to destination"
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shutil.rmtree(waiting_path)
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sys.exit(0)
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temp_dir = tempfile.mkdtemp('', prog)
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atexit.register(remove_temp, temp_dir)
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@ -305,6 +390,7 @@ atexit.register(remove_temp, temp_dir)
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package_file = path.join(temp_dir, 'package')
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downloaded = False
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checked = False
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if rsses:
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import libxml2
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@ -312,17 +398,28 @@ if rsses:
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try:
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feed = libxml2.parseDoc(urllib2.urlopen(rss['url']).read())
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url = None
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release = None
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# Find the first matching node
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for node in feed.xpathEval(rss['xpath']):
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if re.search(rss['pattern'], str(node)):
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m = re.search(rss['pattern'], str(node))
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if m:
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if len(m.groups()) > 0:
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release = m.group(1)
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url = str(node)
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break
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try:
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download(url, package_file)
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downloaded = True
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break
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except:
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print>>sys.stderr, "could not download from %s, trying next rss"%(url)
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pass
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# Make sure it's a new release
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if old_manifest and release == old_manifest['release'] and not args.force:
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checked = True
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else:
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try:
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download(url, package_file)
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downloaded = True
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break
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except:
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print>>sys.stderr, "could not download from %s, trying next rss"%(url)
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pass
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except:
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print>>sys.stderr, "could read not from rss %s"%(rss)
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pass
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@ -330,15 +427,26 @@ if rsses:
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if not downloaded:
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for url in urls:
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try:
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download(url, package_file)
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downloaded = True
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break
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release = None
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if url['version_url']:
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f = urllib2.urlopen(url['version_url'])
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release = f.read(100).strip()
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f.close()
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if old_manifest and release == old_manifest['release'] and not args.force:
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checked = True
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else:
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download(url['url'], package_file)
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downloaded = True
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except:
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print>>sys.stderr, "could not download from %s, trying next url"%(url)
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pass
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raise
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if not downloaded:
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print>>sys.stderr, "out of places to download from, try later"
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if checked:
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if quiet == 0:
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print>>sys.stderr, "same release, not downloading"
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else:
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print>>sys.stderr, "out of places to try downloading from, try later"
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sys.exit(2)
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unpack_dir = path.join(temp_dir, 'unpack')
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@ -349,47 +457,33 @@ import_keys(gpg_path, temp_dir, config)
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(success, assertions, out_manifest) = get_assertions(gpg_path, temp_dir, unpack_dir, files)
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if old_manifest:
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if out_manifest['name'] != old_manifest['name']:
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print>>sys.stderr, "The old directory has a manifest for a different package"
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sys.exit(3)
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if LooseVersion(out_manifest['release']) < LooseVersion(old_manifest['release']) and not args.force:
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print>>sys.stderr, "This would downgrade from version %s to %s"%(old_manifest['release'],out_manifest['release'])
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sys.exit(4)
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elif LooseVersion(out_manifest['release']) == LooseVersion(old_manifest['release']):
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if quiet <= 1:
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print>>sys.stderr, "This is a reinstall of version %s"%(old_manifest['release'])
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else:
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if quiet == 0:
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print>>sys.stderr, "Upgrading from version %s to %s"%(old_manifest['release'],out_manifest['release'])
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check_name_and_version(out_manifest, old_manifest)
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if not success and quiet <= 1:
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print>>sys.stderr, "There were errors getting assertions"
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total_weight = check_assertions(config, assertions)
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if not total_weight:
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if total_weight is None:
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print>>sys.stderr, "There were errors checking assertions, build is untrusted, aborting"
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sys.exit(5)
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if quiet == 0:
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print>>sys.stderr, "Successful with signature weight %d"%(total_weight)
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if config.get('waiting_period', 0) > 0 and path.exists(dest_path):
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waiting_path = tempfile.mkdtemp('', prog)
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shutil.copytree(unpack_dir, path.join(waiting_path, 'unpack'))
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f = file(path.join(dest_path, '.gitian-waiting'), 'w')
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yaml.dump({'time': time.time(), 'out_manifest': out_manifest, 'waiting_path': waiting_path}, f)
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f.close()
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if quiet == 0:
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print>>sys.stderr, "Started waiting period"
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else:
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if args.dryrun:
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print>>sys.stderr, "Dry run, not copying"
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else:
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copy_to_destination(unpack_dir, dest_path, out_manifest, old_manifest)
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for root, dirs, files in os.walk(unpack_dir, topdown = True):
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rel = path.relpath(root, unpack_dir)
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if not path.exists(path.join(dest_path, rel)):
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os.mkdir(path.normpath(path.join(dest_path, rel)))
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for f in files:
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shutil.copy2(path.join(root, f), path.join(dest_path, rel, f))
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if old_manifest:
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removed = set(old_manifest['sums'].keys()).difference(out_manifest['sums'].keys())
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for f in removed:
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if path.exists(path.join(dest_path, f)):
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os.unlink(path.join(dest_path, f))
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f = file(path.join(dest_path, '.gitian-manifest'), 'w')
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yaml.dump(out_manifest, f)
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f.close()
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if args.post:
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os.system(args.post)
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