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ssh-reg/private/Backup.py

135 lines
5.9 KiB
Python

#!/usr/bin/env python3
import ListUsers
import csv
import io
import lib.CFG as CFG
import lib.validator
import lib.UserExceptions
import os
class Backup:
filename: str
quoting: int
dialect: str
field_names: tuple
def __init__(self, fname: str = CFG.args.file, quoting: int = csv.QUOTE_NONNUMERIC, dialect: str = "excel"):
self.setFilename(fname)
self.setQuoting(quoting)
self.setDialect(dialect)
self.setFieldnames(tuple(['id', 'username', 'email', 'name', 'pubkey', 'timestamp', 'status']))
def setDialect(self, dialect: str):
self.dialect = dialect
def setQuoting(self, quoting: int):
self.quoting = quoting
def setFilename(self, filename: str):
self.filename = filename
def setFieldnames(self, f_names: tuple):
self.field_names = f_names
def BackupToFile(self, fetched: list):
returner = io.StringIO()
write_csv = csv.DictWriter(returner, fieldnames=self.field_names, quoting=self.quoting, dialect=self.dialect)
write_csv.writeheader()
write_csv.writerows(fetched)
if self.filename == "stdout":
print(returner.getvalue())
else:
with open(self.filename, "w") as f:
print(returner.getvalue(), file=f)
return True
@staticmethod
def ImportFromFile(fname: str = CFG.args.file, db: str = CFG.REG_FILE, userids: tuple = tuple([])):
if not os.path.isfile(fname):
print(f"File {fname} don't exist")
return None
if not os.path.isfile(db):
print(f"The database file {db} don't exist")
return None
if userids:
pass # empty tuple means everything
# noinspection PyBroadException
try:
with open(fname, 'r', newline='') as f:
import lib.sqlitedb
import lib.System
sysctl = lib.System.System()
sql = lib.sqlitedb.SQLitedb(CFG.REG_FILE)
reader = csv.DictReader(f) # @TODO csv.Sniffer to compare? When yes, give force-accept option
for row in reader:
# if any of this fails move on to the next user, just print a relatively helpful message lel
if not lib.validator.checkUsernameCharacters(row["username"]):
print(f"The username contains unsupported characters or starts with a number: "
f"{row['username']}")
continue
if not lib.validator.checkUsernameLength(row["username"]):
print(f"The username {row['username']} is either too long(>16) or short(<3).")
continue
if not lib.validator.checkSSHKey(row["pubkey"]):
print(f"Following SSH-Key isn't valid: {row['pubkey']}")
continue
if not lib.validator.checkEmail(row["email"]):
print(f"The E-Mail address {row['email']} is not valid.")
continue
if lib.validator.checkUserExists(row["username"]):
print(f"The user '{row['username']}' already exists.")
continue
if row["status"] == "1":
try:
sysctl.register(row["username"])
sysctl.lock_user_pw(row["username"])
sysctl.add_to_usergroup(row["username"])
sysctl.make_ssh_usable(row["username"], row["pubkey"])
print(row['username'], "====> Registered.")
except lib.UserExceptions.UserExistsAlready as UEA:
pass # @TODO User was determined to exists already, shouldn't happen but is possible
except lib.UserExceptions.UnknownReturnCode as URC:
pass # @TODO Unknown Return Codes. Can happen in various function
except lib.UserExceptions.SSHDirUncreatable as SDU:
pass # @TODO SSH Directory doesn't exist AND couldn't be created. Inherently wrong design!
except lib.UserExceptions.ModifyFilesystem as MFS:
pass # @TODO Same as SSH Dir but more general, same problem: Wrong Permissions,
# Missing Dirs etc
except Exception as E: # @TODO well less broad is hard to achieve Kappa
print(E)
continue
elif row["status"] == "0":
print(row['username'] + " not approved, therefore not registered.")
try:
sql.safequery(
"INSERT INTO `applications` (username, name, timestamp, email, pubkey, status) "
"VALUES (?,?,?,?,?,?)", tuple([row["username"], row["name"], row["timestamp"],
row["email"], row["pubkey"], row["status"]]))
except OSError as E:
pass
print(f"UUFFF, something went WRONG with the file {fname}: {E}")
except Exception as didntCatch:
print(f"Exception! UNCATCHED! {type(didntCatch)}")
return True
if __name__ == "__main__":
try:
L = ListUsers.ListUsers()
fetch = L.getFetch()
B = Backup()
if CFG.args.Import:
if not CFG.args.file:
print("You MUST set a CSV-file with the -f/--file flag that already exist")
exit(1)
if not B.ImportFromFile(CFG.args.file):
print("Backup didn't work because the file doesnt exist")
else:
B.BackupToFile(fetch)
exit(0)
except KeyboardInterrupt as e:
pass