/usr/share/gnome-schedule/at.py is in gnome-schedule 2.1.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (C) 2004, 2005 Philip Van Hoof <me at pvanhoof dot be>
# Copyright (C) 2004 - 2009 Gaute Hope <eg at gaute dot vetsj dot com>
# Copyright (C) 2004, 2005 Kristof Vansant <de_lupus at pandora dot be>
#
# 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
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02110-1301, USA.
#python modules
import re
import os
import sys
import tempfile
import commands
import time
import datetime
#custom modules
import config
class At:
def __init__(self,root,user,uid,gid,user_home_dir,manual_poscorrect):
#default preview length
self.preview_len = 50
self.root = root
self.set_rights(user,uid,gid, user_home_dir)
self.user_home_dir = user_home_dir
self.manual_poscorrect = manual_poscorrect
# 16 2006-01-08 13:01 a gaute
# 7 Sun Jan 8 13:01:00 2006 a pvanhoof
# 1 2006-04-26 08:54 a gaute
# 14 2006-09-21 10:54 a gaute
# 3 Tue May 8 01:01:00 2007 a gaute
self.atRecordRegex = re.compile('^([\d]+)[\t]([\w]{3,3})[\s]([\w]{3,3})[\s]*([\d]+)[\s]([\d]{2,2}[:][\d]{2,2}[:][\d]{2,2})[\s]([\d]{4,4})[\s]([\w])[\s]([\w]+)')
# after you add a job, this line is printed to stderr
# job 10 at 2006-09-18 12:38
self.atRecordRegexAdd = re.compile('^job\s([0-9]+)\sat')
self.atRecordRegexAdded = re.compile('[^\s]+\s([0-9]+)\sat')
self.SCRIPT_DELIMITER = "###### ---- GNOME_SCHEDULE_SCRIPT_DELIMITER #####"
self.DISPLAY = "DISPLAY=%s; export DISPLAY;\n"
self.DISPLAY = self.DISPLAY + "XAUTHORITY=" + user_home_dir + "/.Xauthority; export XAUTHORITY;\n"
self.DISPLAY = self.DISPLAY + config.xwrapper_exec + " a\n"
self.DISPLAY = self.DISPLAY + """
xwrapper=$?;
if [ $xwrapper -eq 0 ]; then
echo "all fine";
else
echo "xwrapper failed.";
exit;
fi
"""
# If normally this variable is unset the user would not expect it
# to be set, which it will be because Gnome Schedule needs it.
# Therefore we unset it in the script.
self.POSIXLY_CORRECT_UNSET = "unset POSIXLY_CORRECT\n"
self.atdatafileversion = 5
self.atdata = self.user_home_dir + "/.gnome/gnome-schedule/at"
if os.path.exists (self.user_home_dir + "/.gnome") != True:
os.mkdir (self.user_home_dir + "/.gnome", 0700)
os.chown (self.user_home_dir + "/.gnome", self.uid, self.gid)
if os.path.exists(self.atdata) != True:
try:
os.makedirs(self.atdata, 0700)
if self.root == 1:
os.chown (self.user_home_dir + "/.gnome/gnome-schedule", self.uid, self.gid)
os.chown (self.atdata, self.uid, self.gid)
except:
print _("Failed to create data dir! Make sure ~/.gnome and ~/.gnome/gnome-schedule are writable.")
self.months = {
'Jan' : '1',
'Feb' : '2',
'Mar' : '3',
'Apr' : '4',
'May' : '5',
'Jun' : '6',
'Jul' : '7',
'Aug' : '8',
'Sep' : '9',
'Oct' : '10',
'Nov' : '11',
'Dec' : '12'
}
def set_rights(self,user,uid,gid, ud):
self.user = user
self.uid = uid
self.gid = gid
self.user_home_dir = ud
self.atdata = self.user_home_dir + "/.gnome/gnome-schedule/at"
if os.path.exists (self.user_home_dir + "/.gnome") != True:
os.mkdir (self.user_home_dir + "/.gnome", 0700)
os.chown (self.user_home_dir + "/.gnome", self.uid, self.gid)
if os.path.exists(self.atdata) != True:
try:
os.makedirs(self.atdata, 0700)
if self.root == 1:
os.chown (self.user_home_dir + "/.gnome/gnome-schedule", self.uid, self.gid)
os.chown (self.atdata, self.uid, self.gid)
except:
print (_("Failed to create data dir: %s. Make sure ~/.gnome and ~/.gnome/gnome-schedule are writable.") % (self.atdata))
def get_type (self):
return "at"
def parse (self, line, output = True):
if (output == True):
if len (line) > 1 and line[0] != '#':
m = self.atRecordRegex.match(line)
if m != None:
# Time
time = m.groups ()[4][:-3]
# Date
day = m.groups ()[3]
month = m.groups ()[2]
for monthname in self.months:
month = month.replace (monthname, self.months[monthname])
if int (day) < 10:
day = "0" + day
if int (month) < 10:
month = "0" + month
date = day + "." + month + "." + m.groups ()[5]
job_id = m.groups ()[0]
class_id = m.groups ()[6]
user = m.groups ()[7]
success, title, desc, manual_poscorrect, output, display = self.get_job_data (int (job_id))
# manual_poscorrect is only used during preparation of script
execute = config.getAtbin() + " -c " + job_id
# read lines and detect starter
script = os.popen(execute).read()
script, dangerous = self.__prepare_script__ (script, manual_poscorrect, output, display)
#removing ending newlines, but keep one
#if a date in the past is selected the record is removed by at, this creates an error, and generally if the script is of zero length
# TODO: complain about it as well
if len(script) < 2:
done = 1
else:
done = 0
while done == 0:
if script[-1] == "\n":
script = script[0:-1]
else:
done = 1
return job_id, date, time, class_id, user, script, title, dangerous, output
elif (output == False):
if len (line) > 1 and line[0] != '#':
m = self.atRecordRegexAdd.search(line)
#print "Parsing line: " + line
if m != None:
#print "Parse successfull, groups: "
#print m.groups()
job_id = m.groups ()[0]
return int(job_id)
else:
return False
return False
# TODO: throw exception
def get_job_data (self, job_id):
f = os.path.join (self.atdata, str (job_id))
if os.access (f, os.R_OK):
fh = open (f, 'r')
d = fh.read ()
ver_p = d.find ("ver=")
if ver_p == -1:
ver = 1
else:
ver_s = d[ver_p + 4:d.find ("\n")]
d = d[d.find ("\n") + 1:]
ver = int (ver_s)
title = d[6:d.find ("\n")]
d = d[d.find ("\n") + 1:]
# icons out
if ver < 2:
icon = d[5:d.find ("\n")]
d = d[d.find ("\n") + 1:]
desc = d[5:d.find ("\n")]
d = d[d.find ("\n") + 1:]
manual_poscorrect_b = False
if ver > 2:
manual_poscorrect = d[18:d.find ("\n")]
d = d[d.find ("\n") + 1:]
if manual_poscorrect == "true":
manual_poscorrect_b = True
elif manual_poscorrect == "false":
manual_poscorrect_b = False
if ver >= 5:
output_str = d[7:d.find ("\n")]
output = int (output_str)
d = d[d.find("\n") + 1:]
else:
output = 0
if ver >= 5:
display = d[8:d.find ("\n")]
d = d[d.find ("\n") + 1:]
if (len (display) < 1) or (output == 0):
display = ""
else:
display = ""
fh.close ()
return True, title, desc, manual_poscorrect_b, output, display
else:
return False, "", "", False, 0, ""
def write_job_data (self, job_id, title, desc, output, display):
# Create and write data file
f = os.path.join (self.atdata, str(job_id))
fh = open (f, 'w')
fh.truncate (1)
fh.seek (0)
fh.write ("ver=" + str(self.atdatafileversion) + "\n")
fh.write ("title=" + title + "\n")
fh.write ("desc=" + desc + "\n")
# This one doesn't need to be passed independently for each job since the job data is only updated together with a task being appended or updated (also new added), and the variable depends on each session. Not job.
if self.manual_poscorrect == True:
fh.write ("manual_poscorrect=true\n")
else:
fh.write ("manual_poscorrect=false\n")
fh.write ("output=" + str (output) + "\n")
fh.write ("display=" + display + "\n")
fh.close ()
os.chown (f, self.uid, self.gid)
os.chmod (f, 0600)
def checkfield (self, runat):
regexp1 = re.compile ("([0-9][0-9])([0-9][0-9])\ ([0-9][0-9])\.([0-9][0-9])\.([0-9][0-9][0-9][0-9])")
regexp2 = re.compile("([0-9][0-9])([0-9][0-9])")
regexp3 = re.compile("([0-9][0-9])\.([0-9][0-9])\.([0-9][0-9][0-9][0-9])")
runat_g1 = regexp1.match(runat)
runat_g2 = regexp2.match(runat)
runat_g3 = regexp3.match(runat)
ctime = time.localtime()
cyear = ctime[0]
cmonth = ctime[1]
cday = ctime[2]
chour = ctime[3]
cminute = ctime[4]
if runat_g1:
(hour, minute, day, month, year) = runat_g1.groups()
hour = int(hour)
minute = int(minute)
year = int(year)
month = int(month)
day = int(day)
if hour > 24 or hour < 0:
return False, "hour"
if minute > 60 or minute < 0:
return False, "minute"
if month > 12 or month < 0:
return False, "month"
if day > 31 or day < 0:
return False, "day"
if year < 0:
return False, "year"
if year >= cyear:
if year == cyear:
syear = True
if (month >= cmonth):
if month == cmonth:
smonth = True
if day >= cday:
if day == cday:
sday = True
if hour >= chour:
if hour == chour:
shour = True
if minute <= cminute:
return False, "minute"
else:
shour = False
else:
return False, "hour"
else:
sday = False
else:
return False, "day"
else:
smonth = False
else:
return False, "month"
else:
syear = False
else:
return False, "year"
elif runat_g2:
(hour, minute) = runat_g2.groups()
hour = int(hour)
minute = int(minute)
if hour > 24 or hour < 0:
return False, "hour"
if minute > 60 or minute < 0:
return False, "minute"
elif runat_g3:
(day, month, year) = runat_g3.groups()
year = int(year)
month = int(month)
day = int(day)
if year < cyear:
return False, "year"
if month < cmonth:
return False, "month"
if day < cday:
return False, "day"
else:
#lowercase
runat = runat.lower()
#some timespecs:
days = ['sun','mon', 'tue', 'wed', 'thu', 'fri', 'sat', 'sunday','monday','tuesday','wednesday','thursday','friday','saturday']
relative_days = ['tomorrow','next week','today']
relative_hour = ['noon','teatime','midnight','next hour']
relative_minute = ['next minute']
relative_month = ['next month']
if runat in days:
pass
elif runat in relative_days:
pass
elif runat in relative_hour:
pass
elif runat in relative_minute:
pass
elif runat in relative_month:
pass
else:
return False, "other"
return True, "ok"
def append (self, runat, command, title, output):
tmpfile = tempfile.mkstemp ()
fd, path = tmpfile
tmp = os.fdopen(fd, 'w')
tmp.write (self.SCRIPT_DELIMITER + "\n")
if self.manual_poscorrect:
tmp.write (self.POSIXLY_CORRECT_UNSET)
display = ""
if output > 0:
display = os.getenv ('DISPLAY')
tmp.write (self.DISPLAY % display )
tmp.write (command + "\n")
tmp.close ()
temp = None
if self.root == 1:
if self.user != "root":
#changes the ownership
os.chown(path, self.uid, self.gid)
execute = config.getSubin() + " " + self.user + " -c \"" + config.getAtbin() + " -f " + path + " " + runat + " && exit\""
child_stdin, child_stdout, child_stderr = os.popen3(execute)
else:
execute = config.getAtbin() + " -f " + path + " " + runat
child_stdin, child_stdout, child_stderr = os.popen3(execute)
else:
execute = config.getAtbin() + " -f " + path + " " + runat
child_stdin, child_stdout, child_stderr = os.popen3(execute)
err = child_stderr.readlines ()
job_id = 0
for line in err:
t = self.parse (line, False)
if t != False:
job_id = t
#print job_id
desc = ""
self.write_job_data (job_id, title, desc, output, display)
os.unlink (path)
def update (self, job_id, runat, command, title, output):
#print "update" + str (job_id) + runat + command + title
#remove old
f = os.path.join (self.atdata, str (job_id))
if os.access (f, os.F_OK):
os.unlink (f)
execute = config.getAtrmbin()+ " " + str(job_id)
commands.getoutput(execute)
#add new
tmpfile = tempfile.mkstemp ()
fd, path = tmpfile
tmp = os.fdopen(fd, 'w')
tmp.write (self.SCRIPT_DELIMITER + "\n")
if self.manual_poscorrect:
tmp.write (self.POSIXLY_CORRECT_UNSET)
display = ""
if output > 0:
display = os.getenv ('DISPLAY')
tmp.write (self.DISPLAY % display )
tmp.write (command + "\n")
tmp.close ()
if self.root == 1:
if self.user != "root":
#changes the ownership
os.chown(path, self.uid, self.gid)
execute = config.getSubin() + " " + self.user + " -c \"" + config.getAtbin() + " -f " + path + " " + runat + " && exit\""
child_stdin, child_stdout, child_stderr = os.popen3(execute)
else:
execute = config.getAtbin() + " -f " + path + " " + runat
child_stdin, child_stdout, child_stderr = os.popen3(execute)
else:
execute = config.getAtbin() + " -f " + path + " " + runat
child_stdin, child_stdout, child_stderr = os.popen3(execute)
err = child_stderr.readlines ()
job_id = 0
for line in err:
t = self.parse (line, False)
if t != False:
job_id = t
#print job_id
desc = ""
self.write_job_data (job_id, title, desc, output, display)
os.unlink (path)
def delete (self, job_id, iter):
if job_id:
# delete file
f = os.path.join (self.atdata, str(job_id))
if os.access(f, os.F_OK):
os.unlink (f)
execute = config.getAtrmbin()+ " " + str(job_id)
commands.getoutput(execute)
def read (self):
data = []
#do 'atq'
execute = config.getAtqbin ()
self.lines = os.popen(execute).readlines()
for line in self.lines:
array_or_false = self.parse (line)
#print array_or_false
if array_or_false != False:
(job_id, date, time, class_id, user, lines, title, dangerous, output) = array_or_false
preview = self.__make_preview__ (lines)
if dangerous == 1:
preview = _("Warning! Unknown task: %(preview)s") % {'preview': preview}
#chopping of script delimiter
lines.strip ()
timestring = "%s %s" % (date, time)
date_o = datetime.datetime.strptime (date + " " + time, "%d.%m.%Y %H:%M")
timestring_show = _("On %(timestring)s") % { 'timestring' : date_o.strftime ("%c") }
# TODO: looks like it could be one append
if self.root == 1:
if self.user == user:
data.append([title, timestring_show, preview, lines, int(job_id), timestring, self, None, date, class_id, user, time, _("Once"), "at", output, timestring])
else:
#print "Record omitted, not current user"
pass
else:
data.append([title, timestring_show, preview, lines, int(job_id), timestring, self, None, date, class_id, user, time, _("Once"), "at", output, timestring])
#print _("added %(id)s") % { "id": job_id }
else:
print _("Warning: a line in atq's output didn't parse")
return data
def __prepare_script__ (self, script, manual_poscorrect, output, display):
# It looks like at prepends a bunch of stuff to each script
# Luckily it delimits that using two newlines
# So assuming that at never prepends two newlines unless
# it's done prepending, we will start recording the custom commands
# once the first two lines have been found
# Later: It now seems like this is incorrect, and may vary upon distribution. I therefore determine the prepended stuff by making a test job and then removing the length of it. in gentoo it adds to newlines at the end of the script
# If the script is created by Gnome Schedule the script is seperated by a delimiter.
dangerous = 0
scriptstart = script.find(self.SCRIPT_DELIMITER)
if scriptstart != -1:
script = script[scriptstart:]
if manual_poscorrect == True:
scriptstart = script.find (self.POSIXLY_CORRECT_UNSET)
if scriptstart != -1:
script = script[scriptstart + len(self.POSIXLY_CORRECT_UNSET):]
else:
script = script[len(self.SCRIPT_DELIMITER) + 1:]
if output > 0:
scriptstart = script.find (self.DISPLAY % display)
if scriptstart != -1:
script = script [scriptstart + len (self.DISPLAY % display):]
else:
dangerous = 1
string = " || {\n echo 'Execution directory inaccessible' >&2\n exit 1\n}\n"
string_len = len(string)
start = script.find(string)
start = start + string_len
script = script[start:]
prelen = 0
# If the string contains TITLE=
titlestart = script.find ("TITLE=")
if titlestart != -1:
titleend = script.find("\n", titlestart)
title = script[(titlestart + 6):titleend]
#remeber the length to remove this from the preview
prelen = len(title) + 7
else:
title = "Untitled"
# If the string contains ICON=
iconstart = script.find ("ICON=")
if iconstart != -1:
iconend = script.find ("\n", iconstart)
icon = script[(iconstart + 5):iconend]
prelen = prelen + len(icon) + 6
else:
icon = None
script = script[prelen:]
return script, dangerous
def __make_preview__ (self, lines, preview_len = 0):
if preview_len == 0:
preview_len = self.preview_len
if len (lines) > preview_len:
result = lines[0:preview_len]
else:
result = lines
result = result.replace("\n",";")
result = result.replace ("&", "&")
#remove ending newlines, not if result len = 0
if len(result) < 2:
done = 1
else:
done = 0
while done == 0:
if result[-1] == ";":
result = result[0:-1]
else:
done = 1
#remove beginning newlines
if len(result) < 2:
done = 1
else:
done = 0
while done == 0:
if result[0] == ";":
result = result[1:]
else:
done = 1
if len(result) >= preview_len :
result = result + "..."
return result
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