def get_os_release(): """Get all key-value pairs from /etc/os-release as a dict""" from collections import OrderedDict data = OrderedDict() if os.path.exists('/etc/os-release'): with open('/etc/os-release') as f: for line in f: try: key, val = line.rstrip().split('=', 1) except ValueError: continue data[key.strip()] = val.strip('"') return data def release_dict_osr(): """ Populate a dict with pertinent values from /etc/os-release """ data = {} os_release = get_os_release() if 'ID' in os_release: data['DISTRIB_ID'] = os_release['ID'] if 'VERSION_ID' in os_release: data['DISTRIB_RELEASE'] = os_release['VERSION_ID'] return data def release_dict_lsb(): """ Return the output of lsb_release -ir as a dictionary """ from subprocess import PIPE try: output, err = bb.process.run(['lsb_release', '-ir'], stderr=PIPE) except bb.process.CmdError as exc: return {} lsb_map = { 'Distributor ID': 'DISTRIB_ID', 'Release': 'DISTRIB_RELEASE'} lsb_keys = lsb_map.keys() data = {} for line in output.splitlines(): if line.startswith("-e"): line = line[3:] try: key, value = line.split(":\t", 1) except ValueError: continue if key in lsb_keys: data[lsb_map[key]] = value if len(data.keys()) != 2: return None return data def release_dict_file(): """ Try to gather release information manually when other methods fail """ data = {} try: if os.path.exists('/etc/lsb-release'): data = {} with open('/etc/lsb-release') as f: for line in f: key, value = line.split("=", 1) data[key] = value.strip() elif os.path.exists('/etc/redhat-release'): data = {} with open('/etc/redhat-release') as f: distro = f.readline().strip() import re match = re.match(r'(.*) release (.*) \((.*)\)', distro) if match: data['DISTRIB_ID'] = match.group(1) data['DISTRIB_RELEASE'] = match.group(2) elif os.path.exists('/etc/SuSE-release'): data = {} data['DISTRIB_ID'] = 'SUSE LINUX' with open('/etc/SuSE-release') as f: for line in f: if line.startswith('VERSION = '): data['DISTRIB_RELEASE'] = line[10:].rstrip() break except IOError: return {} return data def distro_identifier(adjust_hook=None): """Return a distro identifier string based upon lsb_release -ri, with optional adjustment via a hook""" import re # Try /etc/os-release first, then the output of `lsb_release -ir` and # finally fall back on parsing various release files in order to determine # host distro name and version. distro_data = release_dict_osr() if not distro_data: distro_data = release_dict_lsb() if not distro_data: distro_data = release_dict_file() distro_id = distro_data.get('DISTRIB_ID', '') release = distro_data.get('DISTRIB_RELEASE', '') if adjust_hook: distro_id, release = adjust_hook(distro_id, release) if not distro_id: return "Unknown" # Filter out any non-alphanumerics distro_id = re.sub(r'\W', '', distro_id) if release: id_str = '{0}-{1}'.format(distro_id.lower(), release) else: id_str = distro_id return id_str.replace(' ','-').replace('/','-')