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dsc filename support

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This commit is contained in:
Stefano Rivera 2010-12-30 17:16:21 +02:00
parent 51fe0a4db8
commit 6c118ef1fe
2 changed files with 95 additions and 30 deletions
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4
debian/changelog vendored
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@ -13,6 +13,8 @@ ubuntu-dev-tools (0.109) UNRELEASED; urgency=low
- Added ubuntu-dev-tools.5
- Support this in many u-d-t scripts, and update manpages.
- Deprecate old configuration environment variables.
* New source package downloading framework in ubuntutools.archive. Use in
many scripts.
* Support the combined "Name <email>" format in UBUMAIL, DEBFULLNAME, and
DEBEMAIL. (LP: #665202)
* Add the beginnings of a test suite. (LP: #690386)
@ -54,7 +56,7 @@ ubuntu-dev-tools (0.109) UNRELEASED; urgency=low
* add "add-patch" that provides the non-interactive version of
edit-patch
-- Stefano Rivera <stefanor@ubuntu.com> Thu, 30 Dec 2010 17:13:05 +0200
-- Stefano Rivera <stefanor@ubuntu.com> Thu, 30 Dec 2010 17:14:09 +0200
ubuntu-dev-tools (0.108) experimental; urgency=low

121
ubuntutools/archive.py
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@ -31,6 +31,7 @@ import hashlib
import os.path
import subprocess
import urllib2
import urlparse
import sys
import debian.deb822
@ -46,6 +47,8 @@ class DownloadError(Exception):
class Dsc(debian.deb822.Dsc):
"Extend deb822's Dsc with checksum verification abilities"
def get_strongest_checksum(self):
"Return alg, dict by filename of size, hash_ pairs"
if 'Checksums-Sha256' in self:
@ -74,22 +77,50 @@ class Dsc(debian.deb822.Dsc):
if buf == '':
break
hash_func.update(buf)
f.close()
return hash_func.hexdigest() == digest
return False
class SourcePackage(object):
distribution = ''
"""Base class for source package downloading.
Use DebianSourcePackage or UbuntuSourcePackage instead of using this
directly.
"""
distribution = 'unknown'
def __init__(self, package=None, version=None, component=None,
dscfile=None, lp=None, mirrors=(), workdir='.'):
"Can be initialised either using package, version or dscfile"
assert ((package is not None and version is not None)
or dscfile is not None)
def __init__(self, package, version, component=None, lp=None, mirrors=()):
self.source = package
self.version = debian.debian_support.Version(version)
self._component = component
self.version = version
self._lp = lp
self.workdir = workdir
# Cached values:
self._component = component
self._dsc = None
self._spph = None
# State:
self._dsc_fetched = False
# Mirrors
self._dsc_source = dscfile
self.mirrors = list(mirrors)
self.masters = []
self.workdir = '.'
self.masters = [UDTConfig.defaults['%s_MIRROR'
% self.distribution.upper()]]
if dscfile is not None:
d_source, d_version = os.path.basename(dscfile)[:-4].split('_')
if self.source is None:
self.source = d_source
if self.version is None:
self.version = d_version
self.version = debian.debian_support.Version(self.version)
@property
def lp_spph(self):
@ -130,6 +161,14 @@ class SourcePackage(object):
"Return the dsc_name, with the workdir path"
return os.path.join(self.workdir, self.dsc_name)
@property
def dsc(self):
"Return a the Dsc"
if not self._dsc:
if self._dsc_fetched:
self._dsc = Dsc(file(self.dsc_pathname, 'rb').read())
return self._dsc
def _mirror_url(self, mirror, filename):
"Build a source package URL on a mirror"
if self.source.startswith('lib'):
@ -144,15 +183,46 @@ class SourcePackage(object):
return os.path.join('https://launchpad.net', self.distribution,
'+archive', 'primary', '+files', filename)
def download_file(self, url, dsc=None):
"Download url to pathname"
def _source_urls(self, name):
"Generator of sources for name"
if self._dsc_source:
yield os.path.join(os.path.dirname(self._dsc_source), name)
for mirror in self.mirrors:
yield self._mirror_url(mirror, name)
yield self._lp_url(name)
def pull_dsc(self):
"Retrieve dscfile and parse"
if self._dsc_source:
parsed = urlparse.urlparse(self._dsc_source)
if parsed.scheme == '':
self._dsc_source = 'file://' + os.path.abspath(self._dsc_source)
parsed = urlparse.urlparse(self._dsc_source)
if (parsed.scheme != 'file'
or os.path.realpath(os.path.dirname(parsed.path))
!= os.path.realpath(self.workdir)):
self._download_file(self._dsc_source)
else:
self._download_file(self._lp_url(self.dsc_name))
self._dsc_fetched = True
assert self.source == self.dsc['Source']
version = debian.debian_support.Version(self.dsc['Version'])
assert self.version.upstream_version == version.upstream_version
assert self.version.debian_revision == version.debian_revision
self.version = version
def _download_file(self, url):
"Download url to workdir"
filename = os.path.basename(url)
pathname = os.path.join(self.workdir, filename)
if dsc:
if dsc.verify_file(pathname):
if self.dsc and not url.endswith('.dsc'):
if self.dsc.verify_file(pathname):
Logger.debug('Using existing %s', filename)
return True
size = [entry['size'] for entry in dsc['Files']
size = [entry['size'] for entry in self.dsc['Files']
if entry['name'] == filename]
assert len(size) == 1
size = int(size[0])
@ -174,46 +244,38 @@ class SourcePackage(object):
out.close()
sys.stdout.write(' done\n')
sys.stdout.flush()
if dsc:
if not dsc.verify_file(pathname):
if self.dsc and not url.endswith('.dsc'):
if not self.dsc.verify_file(pathname):
Logger.error('Checksum does not match.')
return False
return True
def pull(self):
"Pull into workdir"
self.download_file(self._lp_url(self.dsc_name))
dsc = Dsc(file(self.dsc_pathname, 'rb').read())
for entry in dsc['Files']:
name = entry['name']
for mirror in self.mirrors:
if self.dsc is None:
self.pull_dsc()
for entry in self.dsc['Files']:
for url in self._source_urls(entry['name']):
try:
if self.download_file(self._mirror_url(mirror, name), dsc):
if self._download_file(url):
break
except urllib2.HTTPError, e:
Logger.normal('HTTP Error %i: %s', e.code, str(e))
except urllib2.URLError, e:
Logger.normal('URL Error: %s', e.reason)
else:
try:
if not self.download_file(self._lp_url(name), dsc):
raise DownloadError('Could not find %s anywhere.'
% name)
except urllib2.HTTPError, e:
Logger.normal('HTTP Error %i: %s', e.code, str(e))
except urllib2.URLError, e:
Logger.normal('URL Error: %s', e.reason)
return False
return True
def unpack(self):
"Unpack in workdir"
cmd = ('dpkg-source', '-x', '--require-valid-signature',
self.dsc_name)
cmd = ('dpkg-source', '-x', self.dsc_name)
Logger.command(cmd)
subprocess.check_call(cmd, cwd=self.workdir)
class DebianSourcePackage(SourcePackage):
"Download / unpack a Debian source package"
distribution = 'debian'
# TODO: Security support
# TODO: snapshot support
@ -221,6 +283,7 @@ class DebianSourcePackage(SourcePackage):
# TODO: GPG verification fallback
class UbuntuSourcePackage(SourcePackage):
"Download / unpack an Ubuntu source package"
distribution = 'ubuntu'
# TODO: Delete everything after this point.