From: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
---|---|
To: | Philippe Strauss <philippe(at)straussaudio(dot)ch>, psycopg(at)lists(dot)postgresql(dot)org |
Subject: | Re: Safe SELECT ... LIKE abc% in psycopg |
Date: | 2024-04-22 16:50:31 |
Message-ID: | 387a4f5e-5886-443d-bc4e-e649706173a4@aklaver.com |
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Lists: | psycopg |
On 4/22/24 09:34, Philippe Strauss wrote:
> Hello, I'm Philippe from switzerland,
>
> I'm writing using python a small JSON API for a mycology photos archive
> webapp. Aside the main API endpoint are two
> helpers for an autocomplete form.
> Here is the first one:
>
> --8<--
> @app.route('/genus/<genus>')
> def genus(genus):
> with dbconn.cursor() as cur:
> cur.execute("""SELECT myco.genus.name
> FROM myco.genus
> WHERE myco.genus.name LIKE %s""", (genus.upper()+'%',))
> lsgenus = cur.fetchall()
> ls = []
> for genus in lsgenus:
> ls.append(genus[0])
> return jsonify(ls)
> --8<--
>
> My questions:
> - What is the best way to use in psycopg3 to express a SELECT ... WHERE
> ... LIKE blah% ?
> - Is my code above safe or vulnerable to a injection attack?
> - What peoples having passed on the same pattern have to recommend?
Read:
https://www.psycopg.org/psycopg3/docs/basic/params.html
It will answer the above.
For this case from link:
"When parameters are used, in order to include a literal % in the query
you can use the %% string:"
>
> Thanks!
>
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com
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