rpmlint/PostCheck.py

226 lines
8.0 KiB
Python

#############################################################################
# Project : Mandrakelinux
# Module : rpmlint
# File : PostCheck.py
# Version : $Id$
# Author : Frederic Lepied
# Created On : Wed Jul 5 13:30:17 2000
# Purpose : Check post/pre scripts
#############################################################################
from Filter import *
import AbstractCheck
import rpm
import re
import os
import commands
import string
import types
DEFAULT_VALID_SHELLS=('/bin/sh',
'/bin/bash',
'/sbin/sash',
'/usr/bin/perl',
)
extract_dir=Config.getOption('ExtractDir', '/tmp')
valid_shells=Config.getOption('ValidShells', DEFAULT_VALID_SHELLS)
braces_regex=re.compile('^[^#]*%', re.MULTILINE)
double_braces_regex=re.compile('%%', re.MULTILINE)
bracket_regex=re.compile('^[^#]*if.*[^ :\]]\]', re.MULTILINE)
home_regex=re.compile('[^a-zA-Z]+~/|\$HOME', re.MULTILINE)
dangerous_command_regex=re.compile("(^|\s|;|/bin/|\|)(cp|mv|ln|tar|rpm|chmod|chown|rm|cpio|install|perl)\s", re.MULTILINE)
single_command_regex=re.compile("^[ \n]*([^ \n]+)[ \n]*$")
update_menu_regex=re.compile('update-menus', re.MULTILINE)
tmp_regex=re.compile('\s(/var)?/tmp', re.MULTILINE)
menu_regex=re.compile('^/usr/lib/menu/|^/etc/menu-methods/')
bogus_var_regex=re.compile('(\${?RPM_BUILD_(ROOT|DIR)}?)')
prereq_assoc = (
# ['chkconfig', ('chkconfig', '/sbin/chkconfig')],
['chkfontpath', ('chkfontpath', '/usr/sbin/chkfontpath')],
['rpm-helper', ('rpm-helper',)],
)
for p in prereq_assoc:
p[0] = re.compile('^[^#]+' + p[0], re.MULTILINE)
def incorrect_shell_script(shellscript):
tmpfile = '%s/.bash-script.%d' % (extract_dir, os.getpid())
if not shellscript:
return 0
file=open(tmpfile, 'w')
file.write(shellscript)
file.close()
ret=commands.getstatusoutput('/bin/bash -n %s' % tmpfile)
os.remove(tmpfile)
return ret[0]
def incorrect_perl_script(perlscript):
tmpfile = '%s/.perl-script.%d' % (extract_dir, os.getpid())
if not perlscript:
return 0
file=open(tmpfile, 'w')
file.write(perlscript)
file.close()
ret=commands.getstatusoutput('/usr/bin/perl -wc %s' % tmpfile)
os.remove(tmpfile)
return ret[0]
class PostCheck(AbstractCheck.AbstractCheck):
def __init__(self):
AbstractCheck.AbstractCheck.__init__(self, 'PostCheck')
def check(self, pkg):
# Check only binary package
if pkg.isSource():
return
menu_error=0
prereq=map(lambda x: x[0], pkg.prereq())
files=pkg.files().keys()
for tag in ((rpm.RPMTAG_PREIN, rpm.RPMTAG_PREINPROG, '%pre'),
(rpm.RPMTAG_POSTIN, rpm.RPMTAG_POSTINPROG, '%post'),
(rpm.RPMTAG_PREUN, rpm.RPMTAG_PREUNPROG, '%preun'),
(rpm.RPMTAG_POSTUN, rpm.RPMTAG_POSTUNPROG, '%postun'),
(rpm.RPMTAG_TRIGGERSCRIPTS, rpm.RPMTAG_TRIGGERSCRIPTPROG, '%trigger'),
):
script = pkg[tag[0]]
prog = pkg[tag[1]]
if type(script) != types.ListType:
self.check_aux(pkg, files, prog, script, tag, prereq)
else:
for idx in range(0, len(prog)):
self.check_aux(pkg, files, prog[idx], script[idx], tag, prereq)
ghost_files=pkg.ghostFiles()
if ghost_files:
postin=pkg[rpm.RPMTAG_POSTIN]
prein=pkg[rpm.RPMTAG_PREIN]
if not postin and not prein:
printWarning(pkg, 'ghost-files-without-postin')
else:
for f in ghost_files:
if (not postin or string.find(postin, f) == -1) and \
(not prein or string.find(prein, f) == -1):
printWarning(pkg, 'postin-without-ghost-file-creation', f)
def check_aux(self, pkg, files, prog, script, tag, prereq):
if script:
if prog:
if not prog in valid_shells:
printError(pkg, 'invalid-shell-in-' + tag[2], prog)
if prog == '/bin/sh' or prog == '/bin/bash' or prog == '/usr/bin/perl':
if braces_regex.search(script) and not double_braces_regex.search(script):
printWarning(pkg, 'percent-in-' + tag[2])
if bracket_regex.search(script):
printWarning(pkg, 'spurious-bracket-in-' + tag[2])
res=dangerous_command_regex.search(script)
if res:
printWarning(pkg, 'dangerous-command-in-' + tag[2], res.group(2))
if update_menu_regex.search(script):
menu_error=1
for f in files:
if menu_regex.search(f):
menu_error=0
break
if menu_error:
printError(pkg, 'update-menus-without-menu-file-in-' + tag[2])
if tmp_regex.search(script):
printError(pkg, 'use-tmp-in-' + tag[2])
for c in prereq_assoc:
if c[0].search(script):
found=0
for p in c[1]:
if p in prereq or p in files:
found=1
break
if not found:
printError(pkg, 'no-prereq-on', c[1][0])
if prog == '/bin/sh' or prog == '/bin/bash':
if incorrect_shell_script(script):
printError(pkg, 'shell-syntax-error-in-' + tag[2])
if home_regex.search(script):
printError(pkg, 'use-of-home-in-' + tag[2])
res=bogus_var_regex.search(script)
if res:
printWarning(pkg, 'bogus-variable-use-in-' + tag[2], res.group(1))
if prog == '/usr/bin/perl':
if incorrect_perl_script(script):
printError(pkg, 'perl-syntax-error-in-' + tag[2])
res=single_command_regex.search(script)
if res:
printWarning(pkg, 'one-line-command-in-' + tag[2], res.group(1))
else:
if prog in valid_shells:
printWarning(pkg, 'empty-' + tag[2])
# Create an object to enable the auto registration of the test
check=PostCheck()
# Add information about checks
if Config.info:
addDetails(
'one-line-command-in-%post',
'''You should use %post -p <command> instead of using:
%post
<command>
It will avoid the fork of a shell interpreter to execute your command as
well as allows rpm to automatically mark the dependency on your command.''',
'one-line-command-in-%postun',
'''You should use %postun -p <command> instead of using:
%postun
<command>
It will avoid the fork of a shell interpreter to execute your command as
well as allows rpm to automatically mark the dependency on your command.''',
'one-line-command-in-%pre',
'''You should use %pre -p <command> instead of using:
%pre
<command>
It will avoid the fork of a shell interpreter to execute your command as
well as allows rpm to automatically mark the dependency on your command.''',
'one-line-command-in-%preun',
'''You should use %preun -p <command> instead of using:
%preun
<command>
It will avoid the fork of a shell interpreter to execute your command as
well as allows rpm to automatically mark the dependency on your command.''',
'spurious-bracket-in-%pre',
'''The %pre scriptlet contains an if [] construction without a space before the
].''',
'spurious-bracket-in-%post',
'''The %post scriptlet contains an if [] construction without a space before the
].''',
'spurious-bracket-in-%preun',
'''The %preun scriptlet contains an if [] construction without a space before the
].''',
'spurious-bracket-in-%postun',
'''The %postun scriptlet contains an if [] construction without a space before the
].''',
)
# PostCheck.py ends here