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email_server: aliases: Add method for checking of an alias is taken

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Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
This commit is contained in:
Sunil Mohan Adapa 2021-10-13 16:26:43 -07:00 committed by James Valleroy
parent b0d3bdb170
commit b0e460b433
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1 changed files with 14 additions and 0 deletions
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14
plinth/modules/email_server/aliases/__init__.py
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@ -55,6 +55,20 @@ def get(uid_number):
return result return result
def exists(email_name):
"""Return whether alias is already taken."""
try:
pwd.getpwnam(email_name)
return True
except KeyError:
pass
with db_cursor() as cur:
query = 'SELECT COUNT(*) FROM Alias WHERE email_name=?'
cur.execute(query, (email_name, ))
return cur.fetchone()[0] != 0
def put(uid_number, email_name): def put(uid_number, email_name):
s = """INSERT INTO Alias(email_name, uid_number, status) s = """INSERT INTO Alias(email_name, uid_number, status)
SELECT ?,?,? WHERE NOT EXISTS( SELECT ?,?,? WHERE NOT EXISTS(