File Explorer

1# __init__.py2#3# Copyright (C) 2012-2016 Red Hat, Inc.4#5# This copyrighted material is made available to anyone wishing to use,6# modify, copy, or redistribute it subject to the terms and conditions of7# the GNU General Public License v.2, or (at your option) any later version.8# This program is distributed in the hope that it will be useful, but WITHOUT9# ANY WARRANTY expressed or implied, including the implied warranties of10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General11# Public License for more details.  You should have received a copy of the12# GNU General Public License along with this program; if not, write to the13# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA14# 02110-1301, USA.  Any Red Hat trademarks that are incorporated in the15# source code or documentation are not subject to the GNU General Public16# License and may only be used or replicated with the express permission of17# Red Hat, Inc.18#19 20from __future__ import absolute_import21from __future__ import unicode_literals22from . import transaction23from dnf.pycomp import is_py3bytes24import dnf.const25import dnf.exceptions26import rpm  # used by ansible (dnf.rpm.rpm.labelCompare in lib/ansible/modules/packaging/os/dnf.py)27 28 29def detect_releasever(installroot):30    # :api31    """Calculate the release version for the system."""32 33    ts = transaction.initReadOnlyTransaction(root=installroot)34    ts.pushVSFlags(~(rpm._RPMVSF_NOSIGNATURES | rpm._RPMVSF_NODIGESTS))35    for distroverpkg in dnf.const.DISTROVERPKG:36        if dnf.pycomp.PY3:37            distroverpkg = bytes(distroverpkg, 'utf-8')38        try:39            idx = ts.dbMatch('provides', distroverpkg)40        except (TypeError, rpm.error) as e:41            raise dnf.exceptions.Error('Error: %s' % str(e))42        if not len(idx):43            continue44        try:45            hdr = next(idx)46        except StopIteration:47            msg = 'Error: rpmdb failed to list provides. Try: rpm --rebuilddb'48            raise dnf.exceptions.Error(msg)49        releasever = hdr['version']50        try:51            try:52                # header returns bytes -> look for bytes53                # it may fail because rpm returns a decoded string since 10 Apr 201954                off = hdr[rpm.RPMTAG_PROVIDENAME].index(distroverpkg)55            except ValueError:56                # header returns a string -> look for a string57                off = hdr[rpm.RPMTAG_PROVIDENAME].index(distroverpkg.decode("utf8"))58            flag = hdr[rpm.RPMTAG_PROVIDEFLAGS][off]59            ver = hdr[rpm.RPMTAG_PROVIDEVERSION][off]60            if flag == rpm.RPMSENSE_EQUAL and ver:61                if hdr['name'] not in (distroverpkg, distroverpkg.decode("utf8")):62                    # override the package version63                    releasever = ver64        except (ValueError, KeyError, IndexError):65            pass66 67        if is_py3bytes(releasever):68            releasever = str(releasever, "utf-8")69        return releasever70    return None71 72 73def _header(path):74    """Return RPM header of the file."""75    ts = transaction.initReadOnlyTransaction()76    with open(path) as package:77        fdno = package.fileno()78        try:79            hdr = ts.hdrFromFdno(fdno)80        except rpm.error as e:81            raise dnf.exceptions.Error("{0}: '{1}'".format(e, path))82        return hdr83 84 85def _invert(dct):86    return {v: k for k in dct for v in dct[k]}87 88_BASEARCH_MAP = _invert({89    'aarch64': ('aarch64',),90    'alpha': ('alpha', 'alphaev4', 'alphaev45', 'alphaev5', 'alphaev56',91              'alphaev6', 'alphaev67', 'alphaev68', 'alphaev7', 'alphapca56'),92    'arm': ('armv5tejl', 'armv5tel', 'armv5tl', 'armv6l', 'armv7l', 'armv8l'),93    'armhfp': ('armv6hl', 'armv7hl', 'armv7hnl', 'armv8hl'),94    'i386': ('i386', 'athlon', 'geode', 'i386', 'i486', 'i586', 'i686'),95    'ia64': ('ia64',),96    'mips': ('mips',),97    'mipsel': ('mipsel',),98    'mips64': ('mips64',),99    'mips64el': ('mips64el',),100    'loongarch64': ('loongarch64',),101    'noarch': ('noarch',),102    'ppc': ('ppc',),103    'ppc64': ('ppc64', 'ppc64iseries', 'ppc64p7', 'ppc64pseries'),104    'ppc64le': ('ppc64le',),105    'riscv32' : ('riscv32',),106    'riscv64' : ('riscv64',),107    'riscv128' : ('riscv128',),108    's390': ('s390',),109    's390x': ('s390x',),110    'sh3': ('sh3',),111    'sh4': ('sh4', 'sh4a'),112    'sparc': ('sparc', 'sparc64', 'sparc64v', 'sparcv8', 'sparcv9',113              'sparcv9v'),114    'x86_64': ('x86_64', 'amd64', 'ia32e'),115})116 117 118def basearch(arch):119    # :api120    return _BASEARCH_MAP[arch]121 122 123def getheader(rpm_hdr, key):124    '''125    Returns value of rpm_hdr[key] as a string. Rpm has switched from bytes to str126    and we need to handle both properly.127    '''128    value = rpm_hdr[key]129    if is_py3bytes(value):130        value = str(value, "utf-8")131    return value132