+#!/usr/bin/env python
+
# Utility functions
-# Copyright (C) 2000 James Troup <james@nocrew.org>
-# $Id: utils.py,v 1.12 2001-01-25 06:00:07 troup Exp $
+# Copyright (C) 2000, 2001, 2002, 2003 James Troup <james@nocrew.org>
+# $Id: utils.py,v 1.57 2003-03-14 19:05:13 troup Exp $
# 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 commands, os, re, socket, shutil, stat, string, sys, tempfile
+################################################################################
+
+import commands, os, pwd, re, select, socket, shutil, string, sys, tempfile, traceback;
+import apt_pkg;
+import db_access;
+
+################################################################################
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*\<([^\> \t]+)\>");
changes_parse_error_exc = "Can't parse line in .changes file";
+invalid_dsc_format_exc = "Invalid .dsc file";
nk_format_exc = "Unknown Format: in .changes file";
no_files_exc = "No Files: field in .dsc file.";
cant_open_exc = "Can't read file.";
unknown_hostname_exc = "Unknown hostname";
cant_overwrite_exc = "Permission denied; can't overwrite existent file."
-
+file_exists_exc = "Destination file exists";
+send_mail_invalid_args_exc = "Both arguments are non-null.";
+sendmail_failed_exc = "Sendmail invocation failed";
+tried_too_hard_exc = "Tried too hard to find a free filename.";
+
+default_config = "/etc/katie/katie.conf";
+default_apt_config = "/etc/katie/apt.conf";
+
######################################################################################
-def open_file(filename, mode):
+def open_file(filename, mode='r'):
try:
f = open(filename, mode);
except IOError:
######################################################################################
-# From reportbug
-def our_raw_input():
- sys.stdout.flush()
+def our_raw_input(prompt=""):
+ if prompt:
+ sys.stdout.write(prompt);
+ sys.stdout.flush();
try:
- ret = raw_input()
+ ret = raw_input();
return ret
except EOFError:
- sys.stderr.write('\nUser interrupt (^D).\n')
- raise SystemExit
+ sys.stderr.write('\nUser interrupt (^D).\n');
+ raise SystemExit;
+
+######################################################################################
+
+def str_isnum (s):
+ for c in s:
+ if c not in string.digits:
+ return 0;
+ return 1;
######################################################################################
-# What a mess. FIXME
def extract_component_from_section(section):
component = "";
-
- if string.find(section, '/') != -1:
- component = string.split(section, '/')[0];
- if string.lower(component) == "non-us" and string.count(section, '/') > 0:
- s = string.split(section, '/')[1];
- if s == "main" or s == "non-free" or s == "contrib": # Avoid e.g. non-US/libs
- component = string.split(section, '/')[0]+ '/' + string.split(section, '/')[1];
-
- if string.lower(section) == "non-us":
+
+ if section.find('/') != -1:
+ component = section.split('/')[0];
+ if component.lower() == "non-us" and section.count('/') > 0:
+ s = component + '/' + section.split('/')[1];
+ if Cnf.has_key("Component::%s" % s): # Avoid e.g. non-US/libs
+ component = s;
+
+ if section.lower() == "non-us":
component = "non-US/main";
-
+
+ # non-US prefix is case insensitive
+ if component.lower()[:6] == "non-us":
+ component = "non-US"+component[6:];
+
+ # Expand default component
if component == "":
- component = "main";
- elif string.lower(component) == "non-us":
+ if Cnf.has_key("Component::%s" % section):
+ component = section;
+ else:
+ component = "main";
+ elif component == "non-US":
component = "non-US/main";
return (section, component);
######################################################################################
-def parse_changes(filename):
- changes_in = open_file(filename,'r');
- error = ""
+# dsc_whitespace_rules turns on strict format checking to avoid
+# allowing in source packages which are unextracable by the
+# inappropriately fragile dpkg-source.
+#
+# The rules are:
+#
+#
+# o 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-----".
+
+def parse_changes(filename, dsc_whitespace_rules=0):
+ changes_in = open_file(filename);
+ error = "";
changes = {};
lines = changes_in.readlines();
+
+ if not lines:
+ raise changes_parse_error_exc, "[Empty changes file]";
+
+ # Reindex by line number so we can easily verify the format of
+ # .dsc files...
+ index = 0;
+ indexed_lines = {};
for line in lines:
- if re.match('^-----BEGIN PGP SIGNATURE', line):
+ index += 1;
+ indexed_lines[index] = line[:-1];
+
+ inside_signature = 0;
+
+ indices = indexed_lines.keys()
+ index = 0;
+ first = -1;
+ while index < max(indices):
+ index += 1;
+ line = indexed_lines[index];
+ if line == "":
+ if dsc_whitespace_rules:
+ index += 1;
+ if index > max(indices):
+ raise invalid_dsc_format_exc, index;
+ line = indexed_lines[index];
+ if not line.startswith("-----BEGIN PGP SIGNATURE"):
+ raise invalid_dsc_format_exc, index;
+ inside_signature = 0;
+ break;
+ if line.startswith("-----BEGIN PGP SIGNATURE"):
break;
- if re.match(r'^\s*$|^-----BEGIN PGP SIGNED MESSAGE', line):
+ if line.startswith("-----BEGIN PGP SIGNED MESSAGE"):
+ if dsc_whitespace_rules:
+ inside_signature = 1;
+ while index < max(indices) and line != "":
+ index += 1;
+ line = indexed_lines[index];
continue;
- slf = re.match(r'^(\S*)\s*:\s*(.*)', line);
+ slf = re_single_line_field.match(line);
if slf:
- field = string.lower(slf.groups()[0]);
+ field = slf.groups()[0].lower();
changes[field] = slf.groups()[1];
+ first = 1;
continue;
- mld = re.match(r'^ \.$', line);
- if mld:
- changes[field] = changes[field] + '\n';
+ if line == " .":
+ changes[field] += '\n';
continue;
- mlf = re.match(r'^\s(.*)', line);
+ mlf = re_multi_line_field.match(line);
if mlf:
- changes[field] = changes[field] + mlf.groups()[0] + '\n';
+ if first == -1:
+ raise changes_parse_error_exc, "'%s'\n [Multi-line field continuing on from nothing?]" % (line);
+ if first == 1 and changes[field] != "":
+ changes[field] += '\n';
+ first = 0;
+ changes[field] += mlf.groups()[0] + '\n';
continue;
- error = error + line;
+ error += line;
+
+ if dsc_whitespace_rules and inside_signature:
+ raise invalid_dsc_format_exc, index;
+
changes_in.close();
- changes["filecontents"] = string.join (lines, "");
+ changes["filecontents"] = "".join(lines);
+
if error != "":
raise changes_parse_error_exc, error;
+
return changes;
######################################################################################
# Dropped support for 1.4 and ``buggy dchanges 3.4'' (?!) compared to di.pl
-def build_file_list(changes, dsc):
+def build_file_list(changes, is_a_dsc=0):
files = {}
format = changes.get("format", "")
if format != "":
format = float(format)
- if dsc == "" and (format < 1.5 or format > 2.0):
- raise nk_format_exc, changes["format"];
+ if not is_a_dsc and (format < 1.5 or format > 2.0):
+ raise nk_format_exc, format;
# No really, this has happened. Think 0 length .dsc file.
if not changes.has_key("files"):
raise no_files_exc
-
- for i in string.split(changes["files"], "\n"):
+
+ for i in changes["files"].split("\n"):
if i == "":
break
- s = string.split(i)
+ s = i.split();
section = priority = "";
try:
- if dsc != "":
+ if is_a_dsc:
(md5, size, name) = s
else:
(md5, size, section, priority, name) = s
if priority == "": priority = "-"
(section, component) = extract_component_from_section(section);
-
+
files[name] = { "md5sum" : md5,
"size" : size,
"section": section,
######################################################################################
# Fix the `Maintainer:' field to be an RFC822 compatible address.
-# cf. Packaging Manual (4.2.4)
+# cf. Debian Policy Manual (D.2.4)
#
# 06:28|<Culus> 'The standard sucks, but my tool is supposed to
# interoperate with it. I know - I'll fix the suckage
# and make things incompatible!'
-
+
def fix_maintainer (maintainer):
- m = re.match(r"^\s*(\S.*\S)\s*\<([^\> \t]+)\>", maintainer)
- rfc822 = maintainer
- name = ""
- email = ""
+ m = re_parse_maintainer.match(maintainer);
+ rfc822 = maintainer;
+ name = "";
+ email = "";
if m != None and len(m.groups()) == 2:
- name = m.group(1)
- email = m.group(2)
- if re.search(r'[,.]', name) != None:
- rfc822 = re.sub(r"^\s*(\S.*\S)\s*\<([^\> \t]+)\>", r"\2 (\1)", maintainer)
+ name = m.group(1);
+ email = m.group(2);
+ if name.find(',') != -1 or name.find('.') != -1:
+ rfc822 = "%s (%s)" % (email, name);
return (rfc822, name, email)
######################################################################################
# sendmail wrapper, takes _either_ a message string or a file as arguments
-def send_mail (message, filename):
- #### FIXME, how do I get this out of Cnf in katie?
- sendmail_command = "/usr/sbin/sendmail -odq -oi -t";
-
+def send_mail (message, filename=""):
# Sanity check arguments
if message != "" and filename != "":
- sys.stderr.write ("send_mail() can't be called with both arguments as non-null! (`%s' and `%s')\n%s" % (message, filename))
- sys.exit(1)
+ raise send_mail_invalid_args_exc;
+
# 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)
- os.write (fd, message)
- os.close (fd)
+ filename = tempfile.mktemp();
+ fd = os.open(filename, os.O_RDWR|os.O_CREAT|os.O_EXCL, 0700);
+ os.write (fd, message);
+ os.close (fd);
+
# Invoke sendmail
- (result, output) = commands.getstatusoutput("%s < %s" % (sendmail_command, filename))
+ (result, output) = commands.getstatusoutput("%s < %s" % (Cnf["Dinstall::SendmailCommand"], filename));
if (result != 0):
- sys.stderr.write ("Sendmail invocation (`%s') failed for `%s'!\n%s" % (sendmail_command, filename, output))
- sys.exit(result)
+ raise sendmail_failed_exc, output;
+
# Clean up any temporary files
if message !="":
- os.unlink (filename)
+ os.unlink (filename);
######################################################################################
def poolify (source, component):
if component != "":
- component = component + '/';
+ component += '/';
# FIXME: this is nasty
- component = string.lower(component);
- component = string.replace(component, 'non-us/', 'non-US/');
+ component = component.lower().replace('non-us/', 'non-US/');
if source[:3] == "lib":
return component + source[:4] + '/' + source + '/'
else:
######################################################################################
-def move (src, dest):
+def move (src, dest, overwrite = 0, perms = 0664):
if os.path.exists(dest) and os.path.isdir(dest):
dest_dir = dest;
else:
os.umask(umask);
#print "Moving %s to %s..." % (src, dest);
if os.path.exists(dest) and os.path.isdir(dest):
- dest = dest + '/' + os.path.basename(src);
- # Check for overwrite permission on existent files
- if os.path.exists(dest) and not os.access(dest, os.W_OK):
- raise cant_overwrite_exc
+ dest += '/' + os.path.basename(src);
+ # Don't overwrite unless forced to
+ if os.path.exists(dest):
+ if not overwrite:
+ raise file_exists_exc;
+ else:
+ if not os.access(dest, os.W_OK):
+ raise cant_overwrite_exc
shutil.copy2(src, dest);
- os.chmod(dest, 0664);
+ os.chmod(dest, perms);
os.unlink(src);
-def copy (src, dest):
+def copy (src, dest, overwrite = 0, perms = 0664):
if os.path.exists(dest) and os.path.isdir(dest):
dest_dir = dest;
else:
os.umask(umask);
#print "Copying %s to %s..." % (src, dest);
if os.path.exists(dest) and os.path.isdir(dest):
- dest = dest + '/' + os.path.basename(src);
- if os.path.exists(dest) and not os.access(dest, os.W_OK):
- raise cant_overwrite_exc
+ dest += '/' + os.path.basename(src);
+ # Don't overwrite unless forced to
+ if os.path.exists(dest):
+ if not overwrite:
+ raise file_exists_exc
+ else:
+ if not os.access(dest, os.W_OK):
+ raise cant_overwrite_exc
shutil.copy2(src, dest);
- os.chmod(dest, 0664);
+ os.chmod(dest, perms);
######################################################################################
-# FIXME: this is inherently nasty. Can't put this mapping in a conf
-# file because the conf file depends on the archive.. doh. Maybe an
-# archive independent conf file is needed.
-
def where_am_i ():
res = socket.gethostbyaddr(socket.gethostname());
- if res[0] == 'pandora.debian.org':
- return 'non-US';
- elif res[0] == 'auric.debian.org':
- return 'ftp-master';
+ database_hostname = Cnf.get("Config::" + res[0] + "::DatabaseHostname");
+ if database_hostname:
+ return database_hostname;
else:
- raise unknown_hostname_exc, res;
-
-######################################################################################
-
-# FIXME: this isn't great either.
+ return res[0];
def which_conf_file ():
- archive = where_am_i ();
- if archive == 'non-US':
- return '/org/non-us.debian.org/katie/katie.conf-non-US';
- elif archive == 'ftp-master':
- return '/org/ftp.debian.org/katie/katie.conf';
+ res = socket.gethostbyaddr(socket.gethostname());
+ if Cnf.get("Config::" + res[0] + "::KatieConfig"):
+ return Cnf["Config::" + res[0] + "::KatieConfig"]
+ else:
+ return default_config;
+
+def which_apt_conf_file ():
+ res = socket.gethostbyaddr(socket.gethostname());
+ if Cnf.get("Config::" + res[0] + "::AptConfig"):
+ return Cnf["Config::" + res[0] + "::AptConfig"]
else:
- raise unknown_hostname_exc, archive
+ return default_apt_config;
######################################################################################
# (woefully incomplete)
def regex_safe (s):
- s = string.replace(s, '+', '\\\\+');
+ s = s.replace('+', '\\\\+');
+ s = s.replace('.', '\\\\.');
return s
######################################################################################
+# Perform a substition of template
+def TemplateSubst(map, filename):
+ file = open_file(filename);
+ template = file.read();
+ for x in map.keys():
+ template = template.replace(x,map[x]);
+ file.close();
+ return template;
+
+######################################################################################
+
+def fubar(msg, exit_code=1):
+ sys.stderr.write("E: %s\n" % (msg));
+ sys.exit(exit_code);
+
+def warn(msg):
+ sys.stderr.write("W: %s\n" % (msg));
+
+######################################################################################
+
+# Returns the user name with a laughable attempt at rfc822 conformancy
+# (read: removing stray periods).
+def whoami ():
+ return pwd.getpwuid(os.getuid())[4].split(',')[0].replace('.', '');
+
+######################################################################################
+
def size_type (c):
t = " b";
if c > 10000:
c = c / 1000;
t = " Mb";
return ("%d%s" % (c, t))
+
+################################################################################
+
+def cc_fix_changes (changes):
+ o = changes.get("architecture", "")
+ if o != "":
+ del changes["architecture"]
+ changes["architecture"] = {}
+ 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):
+ try:
+ a_changes = parse_changes(a);
+ except:
+ return -1;
+
+ try:
+ b_changes = parse_changes(b);
+ except:
+ return 1;
+
+ cc_fix_changes (a_changes);
+ cc_fix_changes (b_changes);
+
+ # Sort by source name
+ a_source = a_changes.get("source");
+ b_source = b_changes.get("source");
+ q = cmp (a_source, b_source);
+ if q:
+ return q;
+
+ # Sort by source version
+ a_version = a_changes.get("version");
+ b_version = b_changes.get("version");
+ q = apt_pkg.VersionCompare(a_version, b_version);
+ if q:
+ return q;
+
+ # Sort by 'have source'
+ a_has_source = a_changes["architecture"].get("source");
+ b_has_source = b_changes["architecture"].get("source");
+ if a_has_source and not b_has_source:
+ return -1;
+ elif b_has_source and not a_has_source:
+ return 1;
+
+ # Fall back to sort by filename
+ return cmp(a, b);
+
+################################################################################
+
+def find_next_free (dest, too_many=100):
+ extra = 0;
+ orig_dest = dest;
+ while os.path.exists(dest) and extra < too_many:
+ dest = orig_dest + '.' + repr(extra);
+ extra += 1;
+ if extra >= too_many:
+ raise tried_too_hard_exc;
+ return dest;
+
+################################################################################
+
+def result_join (original, sep = '\t'):
+ list = [];
+ for i in xrange(len(original)):
+ if original[i] == None:
+ list.append("");
+ else:
+ list.append(original[i]);
+ return sep.join(list);
+
+################################################################################
+
+def prefix_multi_line_string(str, prefix, include_blank_lines=0):
+ out = "";
+ for line in str.split('\n'):
+ line = line.strip();
+ if line or include_blank_lines:
+ out += "%s%s\n" % (prefix, line);
+ # Strip trailing new line
+ if out:
+ out = out[:-1];
+ return out;
+
+################################################################################
+
+def validate_changes_file_arg(file, fatal=1):
+ error = None;
+
+ orig_filename = file
+ if file.endswith(".katie"):
+ file = file[:-6]+".changes";
+
+ if not file.endswith(".changes"):
+ error = "invalid file type; not a changes file";
+ else:
+ if not os.access(file,os.R_OK):
+ if os.path.exists(file):
+ error = "permission denied";
+ else:
+ error = "file not found";
+
+ if error:
+ if fatal:
+ fubar("%s: %s." % (orig_filename, error));
+ else:
+ warn("Skipping %s - %s" % (orig_filename, error));
+ return None;
+ else:
+ return file;
+
+################################################################################
+
+def real_arch(arch):
+ return (arch != "source" and arch != "all");
+
+################################################################################
+
+def join_with_commas_and(list):
+ if len(list) == 0: return "nothing";
+ if len(list) == 1: return list[0];
+ return ", ".join(list[:-1]) + " and " + list[-1];
+
+################################################################################
+
+def get_conf():
+ return Cnf;
+
+################################################################################
+
+# Handle -a, -c and -s arguments; returns them as SQL constraints
+def parse_args(Options):
+ # Process suite
+ if Options["Suite"]:
+ suite_ids_list = [];
+ for suite in split_args(Options["Suite"]):
+ suite_id = db_access.get_suite_id(suite);
+ if suite_id == -1:
+ warn("suite '%s' not recognised." % (suite));
+ else:
+ suite_ids_list.append(suite_id);
+ if suite_ids_list:
+ con_suites = "AND su.id IN (%s)" % ", ".join(map(str, suite_ids_list));
+ else:
+ fubar("No valid suite given.");
+ else:
+ con_suites = "";
+
+ # Process component
+ if Options["Component"]:
+ component_ids_list = [];
+ for component in split_args(Options["Component"]):
+ component_id = db_access.get_component_id(component);
+ if component_id == -1:
+ warn("component '%s' not recognised." % (component));
+ else:
+ component_ids_list.append(component_id);
+ if component_ids_list:
+ con_components = "AND c.id IN (%s)" % ", ".join(map(str, component_ids_list));
+ else:
+ fubar("No valid component given.");
+ else:
+ con_components = "";
+
+ # Process architecture
+ con_architectures = "";
+ if Options["Architecture"]:
+ arch_ids_list = [];
+ check_source = 0;
+ for architecture in split_args(Options["Architecture"]):
+ if architecture == "source":
+ check_source = 1;
+ else:
+ architecture_id = db_access.get_architecture_id(architecture);
+ if architecture_id == -1:
+ warn("architecture '%s' not recognised." % (architecture));
+ else:
+ arch_ids_list.append(architecture_id);
+ if arch_ids_list:
+ con_architectures = "AND a.id IN (%s)" % ", ".join(map(str, arch_ids_list));
+ else:
+ if not check_source:
+ fubar("No valid architecture given.");
+ else:
+ check_source = 1;
+
+ return (con_suites, con_architectures, con_components, check_source);
+
+################################################################################
+
+# Inspired(tm) by Bryn Keller's print_exc_plus (See
+# http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52215)
+
+def print_exc():
+ tb = sys.exc_info()[2];
+ while tb.tb_next:
+ tb = tb.tb_next;
+ stack = [];
+ frame = tb.tb_frame;
+ while frame:
+ stack.append(frame);
+ frame = frame.f_back;
+ stack.reverse();
+ traceback.print_exc();
+ for frame in stack:
+ print "\nFrame %s in %s at line %s" % (frame.f_code.co_name,
+ frame.f_code.co_filename,
+ frame.f_lineno);
+ for key, value in frame.f_locals.items():
+ print "\t%20s = " % key,;
+ try:
+ print value;
+ except:
+ print "<unable to print>";
+
+################################################################################
+
+def try_with_debug(function):
+ try:
+ function();
+ except SystemExit:
+ raise;
+ except:
+ print_exc();
+
+################################################################################
+
+# Function for use in sorting lists of architectures.
+# Sorts normally except that 'source' dominates all others.
+
+def arch_compare_sw (a, b):
+ if a == "source" and b == "source":
+ return 0;
+ elif a == "source":
+ return -1;
+ elif b == "source":
+ return 1;
+
+ return cmp (a, b);
+
+################################################################################
+
+# 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 'madison -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):
+ if s.find(",") == -1:
+ return s.split();
+ else:
+ if s[-1:] == "," and dwim:
+ fubar("split_args: found trailing comma, spurious space maybe?");
+ return s.split(",");
+
+################################################################################
+
+def Dict(**dict): return dict
+
+########################################
+
+# Our very own version of commands.getouputstatus(), hacked to support
+# gpgv's status fd.
+def gpgv_get_status_output(cmd, status_read, status_write):
+ cmd = ['/bin/sh', '-c', cmd];
+ p2cread, p2cwrite = os.pipe();
+ c2pread, c2pwrite = os.pipe();
+ errout, errin = os.pipe();
+ pid = os.fork();
+ if pid == 0:
+ # Child
+ os.close(0);
+ os.close(1);
+ os.dup(p2cread);
+ os.dup(c2pwrite);
+ os.close(2);
+ os.dup(errin);
+ for i in range(3, 256):
+ if i != status_write:
+ try:
+ os.close(i);
+ except:
+ pass;
+ try:
+ os.execvp(cmd[0], cmd);
+ finally:
+ os._exit(1);
+
+ # parent
+ os.close(p2cread)
+ os.dup2(c2pread, c2pwrite);
+ os.dup2(errout, errin);
+
+ output = status = "";
+ while 1:
+ i, o, e = select.select([c2pwrite, errin, status_read], [], []);
+ more_data = [];
+ for fd in i:
+ r = os.read(fd, 8196);
+ if len(r) > 0:
+ more_data.append(fd);
+ if fd == c2pwrite or fd == errin:
+ output += r;
+ elif fd == status_read:
+ status += r;
+ else:
+ fubar("Unexpected file descriptor [%s] returned from select\n" % (fd));
+ if not more_data:
+ pid, exit_status = os.waitpid(pid, 0)
+ try:
+ os.close(status_write);
+ os.close(status_read);
+ os.close(c2pread);
+ os.close(c2pwrite);
+ os.close(p2cwrite);
+ os.close(errin);
+ os.close(errout);
+ except:
+ pass;
+ break;
+
+ return output, status, exit_status;
+
+############################################################
+
+
+def check_signature (filename, reject):
+ """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 is possible that reject()
+is called more than once during an invocation of check_signature()."""
+
+ # Ensure the filename contains no shell meta-characters or other badness
+ if not re_taint_free.match(os.path.basename(filename)):
+ reject("!!WARNING!! tainted filename: '%s'." % (filename));
+ return 0;
+
+ # Invoke gpgv on the file
+ status_read, status_write = os.pipe();
+ cmd = "gpgv --status-fd %s --keyring %s --keyring %s %s" \
+ % (status_write, Cnf["Dinstall::PGPKeyring"], Cnf["Dinstall::GPGKeyring"], filename);
+ (output, status, exit_status) = gpgv_get_status_output(cmd, status_read, status_write);
+
+ # Process the status-fd output
+ keywords = {};
+ bad = internal_error = "";
+ for line in status.split('\n'):
+ line = line.strip();
+ if line == "":
+ continue;
+ split = line.split();
+ if len(split) < 2:
+ internal_error += "gpgv status line is malformed (< 2 atoms) ['%s'].\n" % (line);
+ continue;
+ (gnupg, keyword) = split[:2];
+ if gnupg != "[GNUPG:]":
+ internal_error += "gpgv status line is malformed (incorrect prefix '%s').\n" % (gnupg);
+ continue;
+ args = split[2:];
+ if keywords.has_key(keyword) and (keyword != "NODATA" and keyword != "SIGEXPIRED"):
+ internal_error += "found duplicate status token ('%s').\n" % (keyword);
+ continue;
+ else:
+ keywords[keyword] = args;
+
+ # If we failed to parse the status-fd output, let's just whine and bail now
+ if internal_error:
+ reject("internal error while performing signature check on %s." % (filename));
+ reject(internal_error, "");
+ reject("Please report the above errors to the Archive maintainers by replying to this mail.", "");
+ return None;
+
+ # Now check for obviously bad things in the processed output
+ if keywords.has_key("SIGEXPIRED"):
+ reject("key used to sign %s has expired." % (filename));
+ bad = 1;
+ if keywords.has_key("KEYREVOKED"):
+ reject("key used to sign %s has been revoked." % (filename));
+ bad = 1;
+ if keywords.has_key("BADSIG"):
+ reject("bad signature on %s." % (filename));
+ bad = 1;
+ if keywords.has_key("ERRSIG") and not keywords.has_key("NO_PUBKEY"):
+ reject("failed to check signature on %s." % (filename));
+ bad = 1;
+ if keywords.has_key("NO_PUBKEY"):
+ reject("key used to sign %s not found in keyring." % (filename));
+ bad = 1;
+ if keywords.has_key("BADARMOR"):
+ reject("ascii armour of signature was corrupt in %s." % (filename));
+ bad = 1;
+ if keywords.has_key("NODATA"):
+ reject("no signature found in %s." % (filename));
+ bad = 1;
+
+ if bad:
+ return None;
+
+ # Next check gpgv exited with a zero return code
+ if exit_status:
+ reject("gpgv failed while checking %s." % (filename));
+ if status.strip():
+ reject(prefix_multi_line_string(status, " [GPG status-fd output:] "), "");
+ else:
+ reject(prefix_multi_line_string(output, " [GPG output:] "), "");
+ return None;
+
+ # Sanity check the good stuff we expect
+ if not keywords.has_key("VALIDSIG"):
+ reject("signature on %s does not appear to be valid [No VALIDSIG]." % (filename));
+ bad = 1;
+ else:
+ args = keywords["VALIDSIG"];
+ if len(args) < 1:
+ reject("internal error while checking signature on %s." % (filename));
+ bad = 1;
+ else:
+ fingerprint = args[0];
+ if not keywords.has_key("GOODSIG"):
+ reject("signature on %s does not appear to be valid [No GOODSIG]." % (filename));
+ bad = 1;
+ if not keywords.has_key("SIG_ID"):
+ reject("signature on %s does not appear to be valid [No SIG_ID]." % (filename));
+ bad = 1;
+
+ # Finally ensure there's not something we don't recognise
+ known_keywords = Dict(VALIDSIG="",SIG_ID="",GOODSIG="",BADSIG="",ERRSIG="",
+ SIGEXPIRED="",KEYREVOKED="",NO_PUBKEY="",BADARMOR="",
+ NODATA="");
+
+ for keyword in keywords.keys():
+ if not known_keywords.has_key(keyword):
+ reject("found unknown status token '%s' from gpgv with args '%r' in %s." % (keyword, keywords[keyword], filename));
+ bad = 1;
+
+ if bad:
+ return None;
+ else:
+ return fingerprint;
+
+################################################################################
+
+apt_pkg.init()
+
+Cnf = apt_pkg.newConfiguration();
+apt_pkg.ReadConfigFileISC(Cnf,default_config);
+
+if which_conf_file() != default_config:
+ apt_pkg.ReadConfigFileISC(Cnf,which_conf_file())
+
+################################################################################
projects / dak.git / blobdiff