summaryrefslogtreecommitdiffstats
path: root/bin/emaint
blob: ea8eef4ee3164ec62503aa6ce66c333b152e1de0 (plain)
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
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
#!/usr/bin/python -O

import sys, os
from optparse import OptionParser, OptionValueError
if not hasattr(__builtins__, "set"):
	from sets import Set as set
import re
try:
	import portage
except ImportError:
	from os import path as osp
	sys.path.insert(0, osp.join(osp.dirname(osp.dirname(osp.realpath(__file__))), "pym"))
	import portage

import portage_const, portage_exception
class WorldHandler(object):

	def name():
		return "world"
	name = staticmethod(name)

	def __init__(self):
		self.invalid = []
		self.not_installed = []
		self.invalid_category = []
		self.okay = []
		self.world_file = os.path.join("/", portage_const.WORLD_FILE)
		self.found = os.access(self.world_file, os.R_OK)

		categories = set(portage.settings.categories)
		myroot = portage.settings["ROOT"]
		vardb = portage.db[myroot]["vartree"].dbapi

		for atom in open(self.world_file).read().split():
			if not portage.isvalidatom(atom):
				self.invalid.append(atom)
				continue
			cp = portage.dep_getkey(atom)
			okay = True
			if not vardb.match(atom):
				self.not_installed.append(atom)
				okay = False
			if portage.catsplit(cp)[0] not in categories:
				self.invalid_category.append(atom)
				okay = False
			if okay:
				self.okay.append(atom)

	def check(self):
		errors = []
		if self.found:
			errors += map(lambda x: "'%s' is not a valid atom" % x, self.invalid)
			errors += map(lambda x: "'%s' is not installed" % x, self.not_installed)
			errors += map(lambda x: "'%s' has a category that is not listed in /etc/portage/categories" % x, self.invalid_category)
		else:
			errors.append(self.world_file + " could not be opened for reading")
		return errors

	def fix(self):
		errors = []
		try:
			portage.write_atomic(self.world_file,
				"\n".join(sorted(self.okay)) + "\n")
		except portage_exception.PortageException:
			errors.append(self.world_file + " could not be opened for writing")
		return errors

class VdbKeyHandler(object):
	def name():
		return "vdbkeys"
	name = staticmethod(name)

	def __init__(self):
		self.list = portage.db["/"]["vartree"].dbapi.cpv_all()
		self.missing = []
		self.keys = ["HOMEPAGE", "SRC_URI", "KEYWORDS", "DESCRIPTION"]
		
		for p in self.list:
			mydir = os.path.join(os.sep, portage.settings["ROOT"], portage_const.VDB_PATH, p)+os.sep
			ismissing = True
			for k in self.keys:
				if os.path.exists(mydir+k):
					ismissing = False
					break
			if ismissing:
				self.missing.append(p)
		
	def check(self):
		return ["%s has missing keys" % x for x in self.missing]
	
	def fix(self):
	
		errors = []
	
		for p in self.missing:
			mydir = os.path.join(os.sep, portage.settings["ROOT"], portage_const.VDB_PATH, p)+os.sep
			if not os.access(mydir+"environment.bz2", os.R_OK):
				errors.append("Can't access %s" % (mydir+"environment.bz2"))
			elif not os.access(mydir, os.W_OK):
				errors.append("Can't create files in %s" % mydir)
			else:
				env = os.popen("bzip2 -dcq "+mydir+"environment.bz2", "r")
				envlines = env.read().split("\n")
				env.close()
				for k in self.keys:
					s = [l for l in envlines if l.startswith(k+"=")]
					if len(s) > 1:
						errors.append("multiple matches for %s found in %senvironment.bz2" % (k, mydir))
					elif len(s) == 0:
						s = ""
					else:
						s = s[0].split("=",1)[1]
						s = s.lstrip("$").strip("\'\"")
						s = re.sub("(\\\\[nrt])+", " ", s)
						s = " ".join(s.split()).strip()
						if s != "":
							try:
								keyfile = open(mydir+os.sep+k, "w")
								keyfile.write(s+"\n")
								keyfile.close()
							except (IOError, OSError), e:
								errors.append("Could not write %s, reason was: %s" % (mydir+k, e))
		
		return errors

def emaint_main(myargv):

	# Similar to emerge, emaint needs a default umask so that created
	# files (such as the world file) have sane permissions.
	os.umask(022)

	# TODO: Create a system that allows external modules to be added without
	#       the need for hard coding.
	modules = {"world" : WorldHandler}

	module_names = modules.keys()
	module_names.sort()
	module_names.insert(0, "all")

	def exclusive(option, *args, **kw):
		var = kw.get("var", None)
		if var is None:
			raise ValueError("var not specified to exclusive()")
		if getattr(parser, var, ""):
			raise OptionValueError("%s and %s are exclusive options" % (getattr(parser, var), option))
		setattr(parser, var, str(option))


	usage = "usage: emaint [options] " + " | ".join(module_names)

	usage+= "\n\nCurrently emaint can only check and fix problems with one's world\n"
	usage+= "file.  Future versions will integrate other portage check-and-fix\n"
	usage+= "tools and provide a single interface to system health checks."


	parser = OptionParser(usage=usage, version=portage.VERSION)
	parser.add_option("-c", "--check", help="check for problems",
		action="callback", callback=exclusive, callback_kwargs={"var":"action"})
	parser.add_option("-f", "--fix", help="attempt to fix problems",
		action="callback", callback=exclusive, callback_kwargs={"var":"action"})
	parser.action = None


	(options, args) = parser.parse_args(args=myargv)
	if len(args) != 1:
		parser.error("Incorrect number of arguments")
	if args[0] not in module_names:
		parser.error("%s target is not a known target" % args[0])

	if parser.action:
		action = parser.action
	else:
		print "Defaulting to --check"
		action = "-c/--check"

	if args[0] == "all":
		tasks = modules.values()
	else:
		tasks = [modules[args[0]]]


	if action == "-c/--check":
		status = "Checking %s for problems"
		func = "check"
	else:
		status = "Attempting to fix %s"
		func = "fix"


	for task in tasks:
		print status % task.name()
		inst = task()
		result = getattr(inst, func)()
		if result:
			print
			print "\n".join(result)
			print "\n"

	print "Finished"

if __name__ == "__main__":
	emaint_main(sys.argv[1:])