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setup.py
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setup.py
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#!sudo env python3 setup.py
"setup.py"
import os, sys, traceback
import subprocess
import time
#if __file__:
#print(__file__)
#print(sys.argv[0])
#f = os.path.abspath(__file__)
##print(f)
##f = os.path.abspath(sys.argv[0])
##print(f)
SERVICE_DATA = """[Unit]
Description=shadebox service
After=multi-user.target
Wants=systemd-timesyncd.service
After=systemd-timesyncd.service
ConditionPathExists={0}
[Service]
Type=idle
ExecStart=/usr/bin/nohup {2} {0}
ExecStop=/bin/kill --signal SIGINT $MAINPID
Restart=on-failure
[Install]
WantedBy=multi-user.target
"""
# > {1} 2>&1
#ExecStart=/bin/sh -c '/usr/bin/nohup {2} {0} | tee -a {1}'
def which(command):
"retrives the full path of command"
ret = subprocess.check_output(['which', command]).decode().rstrip()
print (command, '=', repr(ret))
return ret
systemctl = which('systemctl')
chmod = which('chmod')
crontab = which('crontab')
def modify_chrontab(newline, command):
"""replaces every non-commented line of chrontab
which contains [command] with [newline]
if no such lines were found, appends [newline]
"""
assert b'\n' not in newline
#thoughts, no point in replacing more than one, remove the rest?
table = subprocess.check_output([crontab, '-l'])
#print(repr(table))
present = False
new_table = []
for line in table.split(b'\n'):
if line.lstrip().startswith(b'#'):
new_table.append(line)
elif command in line:
new_table.append(newline)
present = True#don't add
else:
new_table.append(line)
if not present:
new_table.append(newline)
new_table.append(b'')#adds a newline
#print(new_table)
table = b'\n'.join(new_table)
with open('temp_cron','wb') as f:
f.write(table)
subprocess.check_call([crontab, 'temp_cron'])
os.remove('temp_cron')
#sudo = which('sudo')#not needed either we're running as root or there's no point?
def make_service(file):
main = file.replace('setup.py', 'shadebox.py')
log = file.replace('setup.py', 'shadebox.log')
service = file.replace('setup.py', 'shadebox.service')
destination = '/etc/systemd/system/shadebox.service'
checkwifi = file.replace('setup.py', 'checkwifi.sh')
## with open(log, mode='w') as f:
## f.write('log created')
print(main, log, service, sep='\n')
data = SERVICE_DATA.format(main, log, sys.executable)
with open(service, 'w') as f:
f.write(data)
## try:
## subprocess.check_output([chmod, '664', destination])
## except Exception as E:
## print("Error setting log permissions.")
try:
os.remove(destination)
except Exception as E:
print("Error removing destination:", E)
try:
os.link(service, destination)
subprocess.check_output([chmod, '664', destination])
subprocess.check_output([systemctl, 'enable', destination]) #, '--now'])
#subprocess.Popen(
except Exception as E:
traceback.print_exc()
print("try sudo env python3 setup.py")
raise
try:
subprocess.check_output([chmod, '775', checkwifi])
modify_chrontab(b'*/5 * * * * /usr/bin/sudo -H /usr/local/bin/checkwifi.sh >> /dev/null 2>&1',
b'checkwifi.sh')
except Exception as E:
print("Error setting up network auto-restart")
traceback.print_exc()
raise
if __name__=='__main__':
make_service(os.path.abspath(__file__))
version_file = __file__.replace('setup.py', os.sep.join(['lib','version.py']))
with open(version_file, 'w') as f:
print('LAST_UPDATE =', time.time(), '\n', file=f)