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genhomedircon: improve error messages for min uid search 

Only grep if the files exist.
grep returns 1 on no match, check against 1 instead of 256.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
This commit is contained in:
Christian Göttsche 2021-01-31 21:50:27 +01:00
parent 27e3099f40
commit 627a453910
1 changed files with 29 additions and 27 deletions
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56
support/genhomedircon.py
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@ -40,7 +40,7 @@
# are always "real" (including root, in the default configuration).
#
import sys, pwd, getopt, re
import sys, pwd, getopt, re, os
from subprocess import getstatusoutput
EXCLUDE_LOGINS=["/sbin/nologin", "/bin/false"]
@ -71,32 +71,34 @@ def getStartingUID():
def getDefaultHomeDir():
ret = []
rc=getstatusoutput("grep -h '^HOME' /etc/default/useradd")
if rc[0] == 0:
homedir = rc[1].split("=")[1]
homedir = homedir.split("#")[0]
homedir = homedir.strip()
if not homedir in ret:
ret.append(homedir)
else:
#rc[0] == 256 means the file was there, we read it, but the grep didn't match
if rc[0] != 256:
sys.stderr.write("%s\n" % rc[1])
sys.stderr.write("You do not have access to /etc/default/useradd HOME=\n")
sys.stderr.flush()
rc=getstatusoutput("grep -h '^LU_HOMEDIRECTORY' /etc/libuser.conf")
if rc[0] == 0:
homedir = rc[1].split("=")[1]
homedir = homedir.split("#")[0]
homedir = homedir.strip()
if not homedir in ret:
ret.append(homedir)
else:
#rc[0] == 256 means the file was there, we read it, but the grep didn't match
if rc[0] != 256:
sys.stderr.write("%s\n" % rc[1])
sys.stderr.write("You do not have access to /etc/libuser.conf LU_HOMEDIRECTORY=\n")
sys.stderr.flush()
if os.path.isfile('/etc/default/useradd'):
rc=getstatusoutput("grep -h '^HOME' /etc/default/useradd")
if rc[0] == 0:
homedir = rc[1].split("=")[1]
homedir = homedir.split("#")[0]
homedir = homedir.strip()
if not homedir in ret:
ret.append(homedir)
else:
#rc[0] == 1 means the file was there, we read it, but the grep didn't match
if rc[0] != 1:
sys.stderr.write("(%d): %s\n" % (rc[0], rc[1]))
sys.stderr.write("You do not have access to /etc/default/useradd HOME=\n")
sys.stderr.flush()
if os.path.isfile('/etc/libuser.conf'):
rc=getstatusoutput("grep -h '^LU_HOMEDIRECTORY' /etc/libuser.conf")
if rc[0] == 0:
homedir = rc[1].split("=")[1]
homedir = homedir.split("#")[0]
homedir = homedir.strip()
if not homedir in ret:
ret.append(homedir)
else:
#rc[0] == 1 means the file was there, we read it, but the grep didn't match
if rc[0] != 1:
sys.stderr.write("(%d): %s\n" % (rc[0], rc[1]))
sys.stderr.write("You do not have access to /etc/libuser.conf LU_HOMEDIRECTORY=\n")
sys.stderr.flush()
if ret == []:
ret.append("/home")
return ret