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#!/usr/bin/python3
from MgaRepo import Error, config
import subprocess
import getpass
import sys
import os
import re
import select
from io import StringIO
import httplib2
# Our own version of commands' commands_exec(). We have a commands
# module directory, so we can't import Python's standard module
# Our own version of commands' getstatusoutput(). We have a commands
# module directory, so we can't import Python's standard module
def commands_getstatusoutput(cmd):
"""Return (status, output) of executing cmd in a shell."""
pipe = subprocess.Popen('{ ' + cmd + '; } 2>&1', stdin = subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines = True, shell = True)
of = pipe.stdout.fileno()
text = ''
pipe.stdin.close()
while True:
text += os.read(of,8192).decode('utf8')
status = pipe.poll()
if status is not None or text == '':
break
if text[-1:] == '\n': text = text[:-1]
return status, text
def execcmd(*cmd, **kwargs):
cmdstr = " ".join(cmd)
verbose = config.getbool("global", "verbose", 0)
if kwargs.get('info') :
prefix='LANGUAGE=C LC_TIME=C '
else:
prefix='LANG=C LANGUAGE=C LC_ALL=C '
if verbose:
print(prefix + cmdstr)
if kwargs.get("show"):
if kwargs.get("geterr"):
err = StringIO()
pstdin = kwargs.get("stdin") if kwargs.get("stdin") else None
p = subprocess.Popen(prefix + cmdstr, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
stdin=pstdin)
of = p.stdout.fileno()
ef = p.stderr.fileno()
while True:
r,w,x = select.select((of,ef), (), ())
odata = None
if of in r:
odata = (os.read(of, 8192)).decode('utf8')
sys.stdout.write(odata)
edata = None
if ef in r:
edata = (os.read(ef, 8192)).decode('utf8')
err.write(edata)
sys.stderr.write(edata)
status = p.poll()
if status is not None and odata == '' and edata == '':
break
output = err.getvalue()
else:
status = os.system(prefix + cmdstr)
output = ""
else:
status, output = commands_getstatusoutput(prefix + cmdstr)
if status != 0 and not kwargs.get("noerror"):
if kwargs.get("cleanerr") and not verbose:
raise Error(output)
else:
raise Error("command failed: %s\n%s\n" % (cmdstr, output))
if verbose:
print(output)
sys.stdout.write(output)
return status, output
def get_output_exec(cmdstr):
output = StringIO()
err = StringIO()
p = subprocess.Popen(cmdstr, shell=True,
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
of = p.stdout.fileno()
ef = p.stderr.fileno()
while True:
r,w,x = select.select((of,ef), (), ())
odata = None
if of in r:
odata = (os.read(of, 8192)).decode('utf8')
output.write(odata)
edata = None
if ef in r:
edata = (os.read(ef, 8192)).decode('utf8')
err.write(edata)
status = p.poll()
if status is not None and odata == '' and edata == '':
break
return output.getvalue()
def get_auth(username=None, password=None):
set_username = 1
set_password = 1
if not username:
username = config.get("auth", "username")
if not username:
username = input("username: ")
else:
set_username = 0
if not password:
password = config.get("auth", "password")
if not password:
password = getpass.getpass("password: ")
else:
set_password = 0
if set_username:
config.set("auth", "username", username)
if set_password:
config.set("auth", "password", password)
return username, password
def mapurl(url):
"""Maps a url following the regexp provided by the option url-map in
mgarepo.conf
"""
urlmap = config.get("global", "url-map")
newurl = url
if urlmap:
try:
expr_, replace = urlmap.split()[:2]
except ValueError:
sys.stderr.buffer.write("invalid url-map: %s" % urlmap)
else:
try:
newurl = re.sub(expr_, replace, url)
except re.error as errmsg:
sys.stderr.buffer.write("error in URL mapping regexp: %s" % errmsg)
return newurl
def get_helper(name):
"""Tries to find the path of a helper script
It first looks if the helper has been explicitly defined in
configuration, if not, falls back to the default helper path, which can
also be defined in configuration file(s).
"""
helperdir = config.get("helper", "prefix", "/usr/share/mgarepo")
hpath = config.get("helper", name, None) or \
os.path.join(helperdir, name)
return hpath
def rellink(src, dst):
"""Creates relative symlinks
It will find the common ancestor and append to the src path.
"""
asrc = os.path.abspath(src)
adst = os.path.abspath(dst)
csrc = asrc.split(os.path.sep)
cdst = adst.split(os.path.sep)
dstname = cdst.pop()
i = 0
l = min(len(csrc), len(cdst))
while i < l:
if csrc[i] != cdst[i]:
break
i += 1
dstextra = len(cdst[i:])
steps = [os.path.pardir] * dstextra
steps.extend(csrc[i:])
return os.path.sep.join(steps)
def maintdb_get(package):
dlurl = config.get("maintdb", "url",
"http://maintdb.mageia.org/")
dlurl = dlurl + "/" + package
h = httplib2.Http()
resp, content = h.request(dlurl, 'GET')
if resp.status != 200:
raise Exception('Package cannot be found in maintdb')
return content.rstrip('\n')
# vim:et:ts=4:sw=4
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