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# -*- coding: utf-8 -*-
__doc__ = """GNUmed internetworking tools."""
#===========================================================================
__author__ = "K. Hilbert <Karsten.Hilbert@gmx.net>"
__license__ = "GPL v2 or later (details at http://www.gnu.org)"
# std libs
import sys
import os.path
import logging
import urllib.request
import urllib.error
import zipfile
import webbrowser
import io
# GNUmed libs
if __name__ == '__main__':
sys.path.insert(0, '../../')
from Gnumed.pycommon import gmLog2
from Gnumed.pycommon import gmTools
from Gnumed.pycommon import gmShellAPI
from Gnumed.pycommon import gmCfg2
from Gnumed.pycommon import gmMimeLib
_log = logging.getLogger('gm.net')
#===========================================================================
# browser access
#---------------------------------------------------------------------------
def open_url_in_browser(url, new=2, autoraise=True, *args, **kwargs):
# url, new=0, autoraise=True
# new=2: open new tab if possible
try:
webbrowser.open(url, new = new, autoraise = autoraise, **kwargs)
except (webbrowser.Error, OSError, UnicodeEncodeError):
_log.exception('error calling browser with url=%s', url)
return False
return True
#===========================================================================
def download_file(url, filename=None, suffix=None):
if filename is None:
filename = gmTools.get_unique_filename(prefix = 'gm-dl-', suffix = suffix)
_log.debug('downloading [%s] into [%s]', url, filename)
try:
dl_name, headers = urllib.request.urlretrieve(url, filename)
except (ValueError, OSError, IOError):
_log.exception('cannot download from [%s]', url)
gmLog2.log_stack_trace()
return None
_log.debug('%s' % headers)
return dl_name
#===========================================================================
# data pack handling
#---------------------------------------------------------------------------
def download_data_packs_list(url, filename=None):
return download_file(url, filename = filename, suffix = 'conf')
#---------------------------------------------------------------------------
def download_data_pack(pack_url, filename=None, md5_url=None):
_log.debug('downloading data pack from: %s', pack_url)
dp_fname = download_file(pack_url, filename = filename, suffix = 'zip')
_log.debug('downloading MD5 from: %s', md5_url)
md5_fname = download_file(md5_url, filename = dp_fname + '.md5')
md5_file = io.open(md5_fname, mode = 'rt', encoding = 'utf8')
md5_expected = md5_file.readline().strip('\n')
md5_file.close()
_log.debug('expected MD5: %s', md5_expected)
md5_calculated = gmTools.file2md5(dp_fname, return_hex = True)
_log.debug('calculated MD5: %s', md5_calculated)
if md5_calculated != md5_expected:
_log.error('mismatch of expected vs calculated MD5: [%s] vs [%s]', md5_expected, md5_calculated)
return (False, (md5_expected, md5_calculated))
return True, dp_fname
#---------------------------------------------------------------------------
def unzip_data_pack(filename=None):
unzip_dir = os.path.splitext(filename)[0]
_log.debug('unzipping data pack into [%s]', unzip_dir)
gmTools.mkdir(unzip_dir)
try:
data_pack = zipfile.ZipFile(filename, 'r')
except (zipfile.BadZipfile):
_log.exception('cannot unzip data pack [%s]', filename)
gmLog2.log_stack_trace()
return None
data_pack.extractall(unzip_dir)
return unzip_dir
#---------------------------------------------------------------------------
def install_data_pack(data_pack=None, conn=None):
from Gnumed.pycommon import gmPsql
psql = gmPsql.Psql(conn)
sql_script = os.path.join(data_pack['unzip_dir'], 'install-data-pack.sql')
if psql.run(sql_script) == 0:
curs = conn.cursor()
curs.execute('select gm.log_script_insertion(%(name)s, %(ver)s)', {'name': data_pack['pack_url'], 'ver': 'current'})
curs.close()
conn.commit()
return True
_log.error('error installing data pack: %s', data_pack)
return False
#---------------------------------------------------------------------------
def download_data_pack_old(url, target_dir=None):
if target_dir is None:
target_dir = gmTools.get_unique_filename(prefix = 'gm-dl-')
_log.debug('downloading [%s]', url)
_log.debug('unpacking into [%s]', target_dir)
gmTools.mkdir(directory = target_dir)
# FIXME: rewrite to use urllib.request.urlretrieve() and
paths = gmTools.gmPaths()
local_script = os.path.join(paths.local_base_dir, '..', 'external-tools', 'gm-download_data')
candidates = ['gm-download_data', 'gm-download_data.bat', local_script, 'gm-download_data.bat']
args = ' %s %s' % (url, target_dir)
success = gmShellAPI.run_first_available_in_shell (
binaries = candidates,
args = args,
blocking = True,
run_last_one_anyway = True
)
if success:
return True, target_dir
_log.error('download failed')
return False, None
#===========================================================================
# client update handling
#---------------------------------------------------------------------------
def compare_versions(left_version, right_version):
"""
0: left == right
-1: left < right
1: left > right
"""
_log.debug('comparing [%s] with [%s]', left_version, right_version)
if left_version == right_version:
_log.debug('same version')
return 0
if right_version in ['head', 'dev', 'devel']:
_log.debug('development code')
return -1
if left_version in ['head', 'dev', 'devel']:
_log.debug('development code')
return 1
left_parts = left_version.split('.')
right_parts = right_version.split('.')
tmp, left_major = gmTools.input2decimal('%s.%s' % (left_parts[0], left_parts[1]))
tmp, right_major = gmTools.input2decimal('%s.%s' % (right_parts[0], right_parts[1]))
if left_major < right_major:
_log.debug('left version [%s] < right version [%s]: major part', left_version, right_version)
return -1
if left_major > right_major:
_log.debug('left version [%s] > right version [%s]: major part', left_version, right_version)
return 1
tmp, left_part3 = gmTools.input2decimal(left_parts[2].replace('rc', '0.'))
tmp, right_part3 = gmTools.input2decimal(right_parts[2].replace('rc', '0.'))
if left_part3 < right_part3:
_log.debug('left version [%s] < right version [%s]: minor part', left_version, right_version)
return -1
if left_part3 > right_part3:
_log.debug('left version [%s] > right version [%s]: minor part', left_version, right_version)
return 1
return 0
#---------------------------------------------------------------------------
def check_for_update(url=None, current_branch=None, current_version=None, consider_latest_branch=False):
"""Check for new releases at <url>.
Returns (bool, text).
True: new release available
False: up to date
None: don't know
"""
if current_version is None:
_log.debug('<current_version> is None, currency unknown')
return (None, None)
if current_version.lower() in ['git head', 'head', 'tip', 'dev', 'devel']:
_log.debug('[%s] always considered up to date', current_version)
return (False, None)
try:
remote_file = urllib.request.urlopen(url)
except (urllib.error.URLError, ValueError, OSError, IOError):
# IOError: socket.error
_log.exception("cannot retrieve version file from [%s]", url)
return (None, _('Cannot retrieve version information from:\n\n%s') % url)
_log.debug('retrieving version information from [%s]', url)
cfg = gmCfg2.gmCfgData()
try:
#remote_file.read().decode(resource.headers.get_content_charset())
cfg.add_stream_source(source = 'gm-versions', stream = remote_file, encoding = u'utf8')
except (UnicodeDecodeError):
remote_file.close()
_log.exception("cannot read version file from [%s]", url)
return (None, _('Cannot read version information from:\n\n%s') % url)
remote_file.close()
latest_branch = cfg.get('latest branch', 'branch', source_order = [('gm-versions', 'return')])
latest_release_on_latest_branch = cfg.get('branch %s' % latest_branch, 'latest release', source_order = [('gm-versions', 'return')])
latest_release_on_current_branch = cfg.get('branch %s' % current_branch, 'latest release', source_order = [('gm-versions', 'return')])
cfg.remove_source('gm-versions')
_log.info('current release: %s', current_version)
_log.info('current branch: %s', current_branch)
_log.info('latest release on current branch: %s', latest_release_on_current_branch)
_log.info('latest branch: %s', latest_branch)
_log.info('latest release on latest branch: %s', latest_release_on_latest_branch)
# anything known ?
no_release_information_available = (
(
(latest_release_on_current_branch is None) and
(latest_release_on_latest_branch is None)
) or (
not consider_latest_branch and
(latest_release_on_current_branch is None)
)
)
if no_release_information_available:
_log.warning('no release information available')
msg = _('There is no version information available from:\n\n%s') % url
return (None, msg)
# up to date ?
if consider_latest_branch:
_log.debug('latest branch taken into account')
if latest_release_on_latest_branch is None:
if compare_versions(latest_release_on_current_branch, current_version) in [-1, 0]:
_log.debug('up to date: current version >= latest version on current branch and no latest branch available')
return (False, None)
else:
if compare_versions(latest_release_on_latest_branch, current_version) in [-1, 0]:
_log.debug('up to date: current version >= latest version on latest branch')
return (False, None)
else:
_log.debug('latest branch not taken into account')
if compare_versions(latest_release_on_current_branch, current_version) in [-1, 0]:
_log.debug('up to date: current version >= latest version on current branch')
return (False, None)
new_release_on_current_branch_available = (
(latest_release_on_current_branch is not None) and
(compare_versions(latest_release_on_current_branch, current_version) == 1)
)
_log.info('%snew release on current branch available', gmTools.bool2str(new_release_on_current_branch_available, '', 'no '))
new_release_on_latest_branch_available = (
(latest_branch is not None)
and
(
(latest_branch > current_branch) or (
(latest_branch == current_branch) and
(compare_versions(latest_release_on_latest_branch, current_version) == 1)
)
)
)
_log.info('%snew release on latest branch available', gmTools.bool2str(new_release_on_latest_branch_available, '', 'no '))
if not (new_release_on_current_branch_available or new_release_on_latest_branch_available):
_log.debug('up to date: no new releases available')
return (False, None)
# not up to date
msg = _('A new version of GNUmed is available.\n\n')
msg += _(' Your current version: "%s"\n') % current_version
if consider_latest_branch:
if new_release_on_current_branch_available:
msg += '\n'
msg += _(' New version: "%s"') % latest_release_on_current_branch
msg += '\n'
msg += _(' - bug fixes only\n')
msg += _(' - database fixups may be needed\n')
if new_release_on_latest_branch_available:
if current_branch != latest_branch:
msg += '\n'
msg += _(' New version: "%s"') % latest_release_on_latest_branch
msg += '\n'
msg += _(' - bug fixes and new features\n')
msg += _(' - database upgrade required\n')
else:
msg += '\n'
msg += _(' New version: "%s"') % latest_release_on_current_branch
msg += '\n'
msg += _(' - bug fixes only\n')
msg += _(' - database fixups may be needed\n')
msg += '\n\n'
msg += _(
'Note, however, that this version may not yet\n'
'be available *pre-packaged* for your system.'
)
msg += '\n\n'
msg += _('Details are found on <http://wiki.gnumed.de>.\n')
msg += '\n'
msg += _('Version information loaded from:\n\n %s') % url
return (True, msg)
#===========================================================================
# mail handling
#---------------------------------------------------------------------------
default_mail_sender = 'gnumed@gmx.net'
default_mail_receiver = 'gnumed-devel@gnu.org'
default_mail_server = 'mail.gmx.net'
#---------------------------------------------------------------------------
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.mime.image import MIMEImage
from email.mime.audio import MIMEAudio
from email.mime.application import MIMEApplication
def compose_email(sender=None, receiver=None, message=None, subject=None, files2attach=None):
# filenames unicode
# file content binary or utf8
# files2attach = [(filename, mimetype-or-None), ...]
if message is None:
raise ValueError('<message> is None, cannot compose email')
message = message.lstrip().lstrip('\r\n').lstrip()
if sender is None:
sender = default_mail_sender
if receiver is None:
receiver = [default_mail_receiver]
if subject is None:
subject = 'compose_email() test'
if files2attach is None:
email = MIMEText(message, 'plain', 'utf8')
else:
email = MIMEMultipart()
email.attach(MIMEText(message, 'plain', 'utf8'))
email['From'] = sender
email['To'] = ', '.join(receiver)
email['Subject'] = subject
if files2attach is None:
return email
for file2attach in files2attach:
filename = file2attach[0]
try:
mimetype = file2attach[1]
except IndexError:
mimetype = gmMimeLib.guess_mimetype(filename = filename)
# text/*
if mimetype.startswith('text/'):
txt = io.open(filename, mode = 'rt', encoding = 'utf8')
attachment = MIMEText(txt.read(), 'plain', 'utf8')
txt.close()
# image/*
elif mimetype.startswith('image/'):
img = io.open(filename, mode = 'rb')
attachment = MIMEImage(img.read())
img.close()
# audio/*
elif mimetype.startswith('audio/'):
song = io.open(filename, mode = 'rb')
attachment = MIMEAudio(song.read())
song.close()
# catch-all application/*
else:
_log.debug('attaching [%s] with type [%s]', filename, mimetype)
mime_subtype = mimetype.split('/', 1)[1]
data = io.open(filename, mode = 'rb')
attachment = MIMEApplication(data.read(), mime_subtype)
data.close()
try:
attachment.replace_header('Content-Disposition', 'attachment; filename="%s"' % gmTools.fname_from_path(filename))
except KeyError:
attachment.add_header('Content-Disposition', 'attachment; filename="%s"' % gmTools.fname_from_path(filename))
email.attach(attachment)
return email
#---------------------------------------------------------------------------
def send_email(sender=None, receiver=None, email=None, server=None, auth=None, debug=False):
if email is None:
raise ValueError('<email> is None, cannot send')
if sender is None:
sender = default_mail_sender
if receiver is None:
receiver = [default_mail_receiver]
if server is None:
server = default_mail_server
import smtplib
failed = False
refused = []
try:
session = smtplib.SMTP(server)
session.set_debuglevel(debug)
try:
session.starttls()
except smtplib.SMTPException:
_log.error('cannot enable TLS on [%s]', server)
session.ehlo()
if auth is not None:
session.login(auth['user'], auth['password'])
refused = session.sendmail(sender, receiver, email.as_string())
session.quit()
except smtplib.SMTPException:
failed = True
_log.exception('cannot send email')
gmLog2.log_stack_trace()
if len(refused) > 0:
_log.error("refused recipients: %s" % refused)
if failed:
return False
return True
#---------------------------------------------------------------------------
def compose_and_send_email(sender=None, receiver=None, message=None, server=None, auth=None, debug=False, subject=None, attachments=None):
email = compose_email (
sender = sender,
receiver = receiver,
message = message,
subject = subject,
files2attach = attachments
)
return send_email (
sender = sender,
receiver = receiver,
email = email,
server = server,
auth = auth,
debug = debug
)
#===========================================================================
# main
#---------------------------------------------------------------------------
if __name__ == '__main__':
if len(sys.argv) < 2:
sys.exit()
if sys.argv[1] != 'test':
sys.exit()
#-----------------------------------------------------------------------
def test_compose_email():
email = compose_email (
message = 'compose_email() test: üü ßß',
files2attach = [[sys.argv[2]]]
)
print(email.as_string())
return email
#-----------------------------------------------------------------------
def test_send_email():
email = compose_email (
message = 'compose_email() test: üü ßß',
files2attach = [[sys.argv[2]]]
)
print(send_email (
# receiver = u'ncq@localhost',
email = email,
# server = 'localhost',
auth = {'user': default_mail_sender, 'password': 'gnumed-at-gmx-net'},
debug = True
))
#-----------------------------------------------------------------------
def test_check_for_update():
test_data = [
('http://www.gnumed.de/downloads/gnumed-versions.txt', None, None, False),
('file:///home/ncq/gm-versions.txt', None, None, False),
('file:///home/ncq/gm-versions.txt', '0.2', '0.2.8.1', False),
('file:///home/ncq/gm-versions.txt', '0.2', '0.2.8.1', True),
('file:///home/ncq/gm-versions.txt', '0.2', '0.2.8.5', True)
]
for test in test_data:
print("arguments:", test)
found, msg = check_for_update(test[0], test[1], test[2], test[3])
print(msg)
return
#-----------------------------------------------------------------------
def test_dl_data_pack():
#url = 'file:./x-data_pack.zip'
#url = 'missing-file.zip'
url = 'gmTools.py'
dl_name = download_data_pack(url)
print(url, "->", dl_name)
unzip_dir = unzip_data_pack(dl_name)
print("unzipped into", unzip_dir)
#-----------------------------------------------------------------------
def test_browser():
success = open_url_in_browser(sys.argv[2])
print(success)
open_url_in_browser(sys.argv[2], abc=222)
#-----------------------------------------------------------------------
#test_check_for_update()
#test_compose_email()
test_send_email()
#test_dl_data_pack()
#test_browser()
#===========================================================================
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