#!/usr/bin/env python
# vim:set et ts=4 sw=4:
-# Utility functions
-# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 James Troup <james@nocrew.org>
+"""Utility functions
-################################################################################
+@contact: Debian FTP Master <ftpmaster@debian.org>
+@copyright: 2000, 2001, 2002, 2003, 2004, 2005, 2006 James Troup <james@nocrew.org>
+@license: GNU General Public License version 2 or later
+"""
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-################################################################################
-
-import codecs, commands, email.Header, os, pwd, re, select, socket, shutil, \
- sys, tempfile, traceback, stat
+import codecs
+import commands
+import email.Header
+import os
+import pwd
+import select
+import socket
+import shutil
+import sys
+import tempfile
+import traceback
+import stat
import apt_pkg
import database
import time
from dak_exceptions import *
+from regexes import re_html_escaping, html_escaping, re_single_line_field, \
+ re_multi_line_field, re_srchasver, re_verwithext, \
+ re_parse_maintainer, re_taint_free, re_gpg_uid
################################################################################
-re_comments = re.compile(r"\#.*")
-re_no_epoch = re.compile(r"^\d+\:")
-re_no_revision = re.compile(r"-[^-]+$")
-re_arch_from_filename = re.compile(r"/binary-[^/]+/")
-re_extract_src_version = re.compile (r"(\S+)\s*\((.*)\)")
-re_isadeb = re.compile (r"(.+?)_(.+?)_(.+)\.u?deb$")
-re_issource = re.compile (r"(.+)_(.+?)\.(orig\.tar\.gz|diff\.gz|tar\.gz|dsc)$")
-
-re_single_line_field = re.compile(r"^(\S*)\s*:\s*(.*)")
-re_multi_line_field = re.compile(r"^\s(.*)")
-re_taint_free = re.compile(r"^[-+~/\.\w]+$")
-
-re_parse_maintainer = re.compile(r"^\s*(\S.*\S)\s*\<([^\>]+)\>")
-re_gpg_uid = re.compile('^uid.*<([^>]*)>')
-
-re_srchasver = re.compile(r"^(\S+)\s+\((\S+)\)$")
-re_verwithext = re.compile(r"^(\d+)(?:\.(\d+))(?:\s+\((\S+)\))?$")
-
-re_srchasver = re.compile(r"^(\S+)\s+\((\S+)\)$")
-
-html_escaping = {'"':'"', '&':'&', '<':'<', '>':'>'}
-re_html_escaping = re.compile('|'.join(map(re.escape, html_escaping.keys())))
+default_config = "/etc/dak/dak.conf" #: default dak config, defines host properties
+default_apt_config = "/etc/dak/apt.conf" #: default apt config, not normally used
-default_config = "/etc/dak/dak.conf"
-default_apt_config = "/etc/dak/apt.conf"
-
-alias_cache = None
-key_uid_email_cache = {}
+alias_cache = None #: Cache for email alias checks
+key_uid_email_cache = {} #: Cache for email addresses from gpg key uids
# (hashname, function, earliest_changes_version)
known_hashes = [("sha1", apt_pkg.sha1sum, (1, 8)),
- ("sha256", apt_pkg.sha256sum, (1, 8))]
+ ("sha256", apt_pkg.sha256sum, (1, 8))] #: hashes we accept for entries in .changes/.dsc
################################################################################
def html_escape(s):
+ """ Escape html chars """
return re_html_escaping.sub(lambda x: html_escaping.get(x.group(0)), s)
################################################################################
def open_file(filename, mode='r'):
+ """
+ Open C{file}, return fileobject.
+
+ @type filename: string
+ @param filename: path/filename to open
+
+ @type mode: string
+ @param mode: open mode
+
+ @rtype: fileobject
+ @return: open fileobject
+
+ @raise CantOpenError: If IOError is raised by open, reraise it as CantOpenError.
+
+ """
try:
f = open(filename, mode)
except IOError:
################################################################################
def parse_changes(filename, signing_rules=0):
- """Parses a changes file and returns a dictionary where each field is a
-key. The mandatory first argument is the filename of the .changes
-file.
+ """
+ Parses a changes file and returns a dictionary where each field is a
+ key. The mandatory first argument is the filename of the .changes
+ file.
-signing_rules is an optional argument:
+ signing_rules is an optional argument:
- o If signing_rules == -1, no signature is required.
- o If signing_rules == 0 (the default), a signature is required.
- o If signing_rules == 1, it turns on the same strict format checking
- as dpkg-source.
+ - If signing_rules == -1, no signature is required.
+ - If signing_rules == 0 (the default), a signature is required.
+ - If signing_rules == 1, it turns on the same strict format checking
+ as dpkg-source.
-The rules for (signing_rules == 1)-mode are:
+ The rules for (signing_rules == 1)-mode are:
- o The PGP header consists of "-----BEGIN PGP SIGNED MESSAGE-----"
- followed by any PGP header data and must end with a blank line.
+ - The PGP header consists of "-----BEGIN PGP SIGNED MESSAGE-----"
+ followed by any PGP header data and must end with a blank line.
- o The data section must end with a blank line and must be followed by
- "-----BEGIN PGP SIGNATURE-----".
-"""
+ - The data section must end with a blank line and must be followed by
+ "-----BEGIN PGP SIGNATURE-----".
+ """
changes_in = open_file(filename)
content = changes_in.read()
################################################################################
def create_hash(where, files, hashname, hashfunc):
- """create_hash extends the passed files dict with the given hash by
+ """
+ create_hash extends the passed files dict with the given hash by
iterating over all files on disk and passing them to the hashing
- function given."""
+ function given.
+ """
rejmsg = []
for f in files.keys():
################################################################################
def check_hash(where, files, hashname, hashfunc):
- """check_hash checks the given hash in the files dict against the actual
+ """
+ check_hash checks the given hash in the files dict against the actual
files on disk. The hash values need to be present consistently in
- all file entries. It does not modify its input in any way."""
+ all file entries. It does not modify its input in any way.
+ """
rejmsg = []
for f in files.keys():
################################################################################
def check_size(where, files):
- """check_size checks the file sizes in the passed files dict against the
- files on disk."""
+ """
+ check_size checks the file sizes in the passed files dict against the
+ files on disk.
+ """
rejmsg = []
for f in files.keys():
################################################################################
def check_hash_fields(what, manifest):
- """check_hash_fields ensures that there are no checksum fields in the
- given dict that we do not know about."""
+ """
+ check_hash_fields ensures that there are no checksum fields in the
+ given dict that we do not know about.
+ """
rejmsg = []
hashes = map(lambda x: x[0], known_hashes)
# access the checksums easily.
def _ensure_dsc_hash(dsc, dsc_files, hashname, hashfunc):
- """ensure_dsc_hashes' task is to ensure that each and every *present* hash
+ """
+ ensure_dsc_hashes' task is to ensure that each and every *present* hash
in the dsc is correct, i.e. identical to the changes file and if necessary
- the pool. The latter task is delegated to check_hash."""
+ the pool. The latter task is delegated to check_hash.
+ """
rejmsg = []
if not dsc.has_key('Checksums-%s' % (hashname,)):
field = 'checksums-%s' % hashname
if not field in manifest:
return rejmsg
- input = manifest[field]
- for line in input.split('\n'):
+ for line in manifest[field].split('\n'):
if not line:
break
- hash, size, file = line.strip().split(' ')
- if not files.has_key(file):
+ checksum, size, checkfile = line.strip().split(' ')
+ if not files.has_key(checkfile):
# TODO: check for the file's entry in the original files dict, not
# the one modified by (auto)byhand and other weird stuff
# rejmsg.append("%s: not present in files but in checksums-%s in %s" %
# (file, hashname, where))
continue
- if not files[file]["size"] == size:
+ if not files[checkfile]["size"] == size:
rejmsg.append("%s: size differs for files and checksums-%s entry "\
- "in %s" % (file, hashname, where))
+ "in %s" % (checkfile, hashname, where))
continue
- files[file][hash_key(hashname)] = hash
+ files[checkfile][hash_key(hashname)] = checksum
for f in files.keys():
if not files[f].has_key(hash_key(hashname)):
- rejmsg.append("%s: no entry in checksums-%s in %s" % (file,
+ rejmsg.append("%s: no entry in checksums-%s in %s" % (checkfile,
hashname, where))
return rejmsg
################################################################################
def force_to_utf8(s):
- """Forces a string to UTF-8. If the string isn't already UTF-8,
-it's assumed to be ISO-8859-1."""
+ """
+ Forces a string to UTF-8. If the string isn't already UTF-8,
+ it's assumed to be ISO-8859-1.
+ """
try:
unicode(s, 'utf-8')
return s
return latin1_s.encode('utf-8')
def rfc2047_encode(s):
- """Encodes a (header) string per RFC2047 if necessary. If the
-string is neither ASCII nor UTF-8, it's assumed to be ISO-8859-1."""
+ """
+ Encodes a (header) string per RFC2047 if necessary. If the
+ string is neither ASCII nor UTF-8, it's assumed to be ISO-8859-1.
+ """
try:
codecs.lookup('ascii')[1](s)
return s
# incompatible!'
def fix_maintainer (maintainer):
- """Parses a Maintainer or Changed-By field and returns:
- (1) an RFC822 compatible version,
- (2) an RFC2047 compatible version,
- (3) the name
- (4) the email
-
-The name is forced to UTF-8 for both (1) and (3). If the name field
-contains '.' or ',' (as allowed by Debian policy), (1) and (2) are
-switched to 'email (name)' format."""
+ """
+ Parses a Maintainer or Changed-By field and returns:
+ 1. an RFC822 compatible version,
+ 2. an RFC2047 compatible version,
+ 3. the name
+ 4. the email
+
+ The name is forced to UTF-8 for both 1. and 3.. If the name field
+ contains '.' or ',' (as allowed by Debian policy), 1. and 2. are
+ switched to 'email (name)' format.
+
+ """
maintainer = maintainer.strip()
if not maintainer:
return ('', '', '', '')
################################################################################
-# sendmail wrapper, takes _either_ a message string or a file as arguments
def send_mail (message, filename=""):
- # If we've been passed a string dump it into a temporary file
+ """sendmail wrapper, takes _either_ a message string or a file as arguments"""
+
+ # If we've been passed a string dump it into a temporary file
if message:
- filename = tempfile.mktemp()
- fd = os.open(filename, os.O_RDWR|os.O_CREAT|os.O_EXCL, 0700)
+ (fd, filename) = tempfile.mkstemp()
os.write (fd, message)
os.close (fd)
################################################################################
-# Perform a substition of template
def TemplateSubst(map, filename):
- file = open_file(filename)
- template = file.read()
+ """ Perform a substition of template """
+ templatefile = open_file(filename)
+ template = templatefile.read()
for x in map.keys():
template = template.replace(x,map[x])
- file.close()
+ templatefile.close()
return template
################################################################################
for j in o.split():
changes["architecture"][j] = 1
-# Sort by source name, source version, 'have source', and then by filename
def changes_compare (a, b):
+ """ Sort by source name, source version, 'have source', and then by filename """
try:
a_changes = parse_changes(a)
except:
################################################################################
def result_join (original, sep = '\t'):
- list = []
+ resultlist = []
for i in xrange(len(original)):
if original[i] == None:
- list.append("")
+ resultlist.append("")
else:
- list.append(original[i])
- return sep.join(list)
+ resultlist.append(original[i])
+ return sep.join(resultlist)
################################################################################
################################################################################
def validate_changes_file_arg(filename, require_changes=1):
- """'filename' is either a .changes or .dak file. If 'filename' is a
-.dak file, it's changed to be the corresponding .changes file. The
-function then checks if the .changes file a) exists and b) is
-readable and returns the .changes filename if so. If there's a
-problem, the next action depends on the option 'require_changes'
-argument:
-
- o If 'require_changes' == -1, errors are ignored and the .changes
- filename is returned.
- o If 'require_changes' == 0, a warning is given and 'None' is returned.
- o If 'require_changes' == 1, a fatal error is raised.
-"""
+ """
+ 'filename' is either a .changes or .dak file. If 'filename' is a
+ .dak file, it's changed to be the corresponding .changes file. The
+ function then checks if the .changes file a) exists and b) is
+ readable and returns the .changes filename if so. If there's a
+ problem, the next action depends on the option 'require_changes'
+ argument:
+
+ - If 'require_changes' == -1, errors are ignored and the .changes
+ filename is returned.
+ - If 'require_changes' == 0, a warning is given and 'None' is returned.
+ - If 'require_changes' == 1, a fatal error is raised.
+
+ """
error = None
orig_filename = filename
################################################################################
-# Handle -a, -c and -s arguments; returns them as SQL constraints
def parse_args(Options):
+ """ Handle -a, -c and -s arguments; returns them as SQL constraints """
# Process suite
if Options["Suite"]:
suite_ids_list = []
################################################################################
-# Function for use in sorting lists of architectures.
-# Sorts normally except that 'source' dominates all others.
-
def arch_compare_sw (a, b):
+ """
+ Function for use in sorting lists of architectures.
+
+ Sorts normally except that 'source' dominates all others.
+ """
+
if a == "source" and b == "source":
return 0
elif a == "source":
################################################################################
-# Split command line arguments which can be separated by either commas
-# or whitespace. If dwim is set, it will complain about string ending
-# in comma since this usually means someone did 'dak ls -a i386, m68k
-# foo' or something and the inevitable confusion resulting from 'm68k'
-# being treated as an argument is undesirable.
-
def split_args (s, dwim=1):
+ """
+ Split command line arguments which can be separated by either commas
+ or whitespace. If dwim is set, it will complain about string ending
+ in comma since this usually means someone did 'dak ls -a i386, m68k
+ foo' or something and the inevitable confusion resulting from 'm68k'
+ being treated as an argument is undesirable.
+ """
+
if s.find(",") == -1:
return s.split()
else:
########################################
-# Our very own version of commands.getouputstatus(), hacked to support
-# gpgv's status fd.
def gpgv_get_status_output(cmd, status_read, status_write):
+ """
+ Our very own version of commands.getouputstatus(), hacked to support
+ gpgv's status fd.
+ """
+
cmd = ['/bin/sh', '-c', cmd]
p2cread, p2cwrite = os.pipe()
c2pread, c2pwrite = os.pipe()
################################################################################
def retrieve_key (filename, keyserver=None, keyring=None):
- """Retrieve the key that signed 'filename' from 'keyserver' and
-add it to 'keyring'. Returns nothing on success, or an error message
-on error."""
+ """
+ Retrieve the key that signed 'filename' from 'keyserver' and
+ add it to 'keyring'. Returns nothing on success, or an error message
+ on error.
+ """
# Defaults for keyserver and keyring
if not keyserver:
return "%s: tainted filename" % (filename)
# Invoke gpgv on the file
- status_read, status_write = os.pipe();
+ status_read, status_write = os.pipe()
cmd = "gpgv --status-fd %s --keyring /dev/null %s" % (status_write, filename)
(_, status, _) = gpgv_get_status_output(cmd, status_read, status_write)
################################################################################
def check_signature (sig_filename, reject, data_filename="", keyrings=None, autofetch=None):
- """Check the signature of a file and return the fingerprint if the
-signature is valid or 'None' if it's not. The first argument is the
-filename whose signature should be checked. The second argument is a
-reject function and is called when an error is found. The reject()
-function must allow for two arguments: the first is the error message,
-the second is an optional prefix string. It's possible for reject()
-to be called more than once during an invocation of check_signature().
-The third argument is optional and is the name of the files the
-detached signature applies to. The fourth argument is optional and is
-a *list* of keyrings to use. 'autofetch' can either be None, True or
-False. If None, the default behaviour specified in the config will be
-used."""
+ """
+ Check the signature of a file and return the fingerprint if the
+ signature is valid or 'None' if it's not. The first argument is the
+ filename whose signature should be checked. The second argument is a
+ reject function and is called when an error is found. The reject()
+ function must allow for two arguments: the first is the error message,
+ the second is an optional prefix string. It's possible for reject()
+ to be called more than once during an invocation of check_signature().
+ The third argument is optional and is the name of the files the
+ detached signature applies to. The fourth argument is optional and is
+ a *list* of keyrings to use. 'autofetch' can either be None, True or
+ False. If None, the default behaviour specified in the config will be
+ used.
+ """
# Ensure the filename contains no shell meta-characters or other badness
if not re_taint_free.match(sig_filename):
return None
# Build the command line
- status_read, status_write = os.pipe();
+ status_read, status_write = os.pipe()
cmd = "gpgv --status-fd %s %s %s %s" % (
status_write, gpg_keyring_args(keyrings), sig_filename, data_filename)
################################################################################
-# Relativize an absolute symlink from 'src' -> 'dest' relative to 'root'.
-# Returns fixed 'src'
def clean_symlink (src, dest, root):
+ """
+ Relativize an absolute symlink from 'src' -> 'dest' relative to 'root'.
+ Returns fixed 'src'
+ """
src = src.replace(root, '', 1)
dest = dest.replace(root, '', 1)
dest = os.path.dirname(dest)
################################################################################
-def temp_filename(directory=None, dotprefix=None, perms=0700):
- """Return a secure and unique filename by pre-creating it.
-If 'directory' is non-null, it will be the directory the file is pre-created in.
-If 'dotprefix' is non-null, the filename will be prefixed with a '.'."""
-
- if directory:
- old_tempdir = tempfile.tempdir
- tempfile.tempdir = directory
-
- filename = tempfile.mktemp()
-
- if dotprefix:
- filename = "%s/.%s" % (os.path.dirname(filename), os.path.basename(filename))
- fd = os.open(filename, os.O_RDWR|os.O_CREAT|os.O_EXCL, perms)
- os.close(fd)
+def temp_filename(directory=None, prefix="dak", suffix=""):
+ """
+ Return a secure and unique filename by pre-creating it.
+ If 'directory' is non-null, it will be the directory the file is pre-created in.
+ If 'prefix' is non-null, the filename will be prefixed with it, default is dak.
+ If 'suffix' is non-null, the filename will end with it.
- if directory:
- tempfile.tempdir = old_tempdir
+ Returns a pair (fd, name).
+ """
- return filename
+ return tempfile.mkstemp(suffix, prefix, directory)
################################################################################
-# checks if the user part of the email is listed in the alias file
-
def is_email_alias(email):
+ """ checks if the user part of the email is listed in the alias file """
global alias_cache
if alias_cache == None:
aliasfn = which_alias_file()
projects / dak.git / blobdiff