1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
# Support for scanning init scripts for LSB info
import re, sys, os, cStringIO
import cPickle
try:
assert True
except:
True = 1
False = 0
class RFC822Parser(dict):
"A dictionary-like object."
__linere = re.compile(r'([^:]+):\s*(.*)$')
def __init__(self, fileob=None, strob=None, startcol=0, basedict=None):
if not fileob and not strob:
raise ValueError, 'need a file or string'
if not basedict:
basedict = {}
super(RFC822Parser, self).__init__(basedict)
if not fileob:
fileob = cStringIO.StringIO(strob)
key = None
for line in fileob:
if startcol:
line = line[startcol:]
if not line.strip():
continue
# Continuation line
if line[0].isspace():
if not key:
continue
self[key] += '\n' + line.strip()
continue
m = self.__linere.match(line)
if not m:
# Not a valid RFC822 header
continue
key, value = m.groups()
self[key] = value.strip()
# End of RFC882Parser
LSBLIB = '/var/lib/lsb'
FACILITIES = os.path.join(LSBLIB, 'facilities')
DEPENDS = os.path.join(LSBLIB, 'depends')
LSBINSTALL = os.path.join(LSBLIB, 'lsbinstall')
beginre = re.compile(re.escape('### BEGIN INIT INFO'))
endre = re.compile(re.escape('### END INIT INFO'))
#linere = re.compile(r'\#\s+([^:]+):\s*(.*)')
def scan_initfile(initfile):
headerlines = ''
scanning = False
for line in file(initfile):
line = line.rstrip()
if beginre.match(line):
scanning = True
continue
elif scanning and endre.match(line):
scanning = False
continue
elif not scanning:
continue
if line.startswith('# '):
headerlines += line[2:] + '\n'
elif line.startswith('#\t'):
headerlines += line[1:] + '\n'
inheaders = RFC822Parser(strob=headerlines)
headers = {}
for header, body in inheaders.iteritems():
# Ignore empty headers
if not body.strip():
continue
if header in ('Default-Start', 'Default-Stop'):
headers[header] = map(int, body.split())
elif header in ('Required-Start', 'Required-Stop', 'Provides',
'Should-Start', 'Should-Stop'):
headers[header] = body.split()
else:
headers[header] = body
return headers
def save_facilities(facilities):
if not facilities:
try:
os.unlink(FACILITIES)
except OSError:
pass
return
fh = file(FACILITIES, 'w')
for facility, entries in facilities.items():
# Ignore system facilities
if facility.startswith('$'): continue
for (scriptname, pri) in entries.items():
start, stop = pri
print >> fh, "%(scriptname)s %(facility)s %(start)d %(stop)d" % locals()
fh.close()
def load_facilities():
facilities = {}
if os.path.exists(FACILITIES):
for line in open(FACILITIES).xreadlines():
try:
scriptname, name, start, stop = line.strip().split()
facilities.setdefault(name, {})[scriptname] = (int(start),
int(stop))
except ValueError, x:
print >> sys.stderr, 'Invalid facility line', line
return facilities
def load_depends():
depends = {}
if os.path.exists(DEPENDS):
independs = RFC822Parser(fileob=file(DEPENDS))
for initfile, facilities in independs.iteritems():
depends[initfile] = facilities.split()
return depends
def save_depends(depends):
if not depends:
try:
os.unlink(DEPENDS)
except OSError:
pass
return
fh = file(DEPENDS, 'w')
for initfile, facilities in depends.iteritems():
print >> fh, '%s: %s' % (initfile, ' '.join(facilities))
fh.close()
# filemap entries are mappings, { (package, filename) : instloc }
def load_lsbinstall_info():
if not os.path.exists(LSBINSTALL):
return {}
fh = open(LSBINSTALL, 'rb')
filemap = cPickle.load(fh)
fh.close()
# Just in case it's corrupted somehow
if not isinstance(filemap, dict):
return {}
return filemap
def save_lsbinstall_info(filemap):
if not filemap:
try:
os.unlink(LSBINSTALL)
except OSError:
pass
return
fh = open(LSBINSTALL, 'wb')
cPickle.dump(fh, filemap)
fh.close()
if __name__ == '__main__':
print scan_initfile('init-fragment')
|
