From: Junio C Hamano <gitster@pobox.com>
To: "Carlo Marcelo Arenas Belón" <carenas@gmail.com>
Cc: git@vger.kernel.org, dirk@ed4u.de, sunshine@sunshineco.com,
peff@peff.net, jrnieder@gmail.com, Johannes.Schindelin@gmx.de
Subject: Re: [PATCH v10] credential-store: ignore bogus lines from store file
Date: Sat, 02 May 2020 13:47:09 -0700 [thread overview]
Message-ID: <xmqqo8r6jc8i.fsf@gitster.c.googlers.com> (raw)
In-Reply-To: <20200502181643.38203-1-carenas@gmail.com> ("Carlo Marcelo Arenas Belón"'s message of "Sat, 2 May 2020 11:16:43 -0700")
Carlo Marcelo Arenas Belón <carenas@gmail.com> writes:
> With the added checks for invalid URLs in credentials, any locally
> modified store files which might have empty lines or even comments
> were reported[1] failing to parse as valid credentials.
>
> Instead of doing a hard check for credentials, do a soft one and
> therefore avoid the reported fatal error.
>
> As a special case, flag files with CRLF endings as invalid early
> to prevent current problems in credential_from_url_gently() with
> handling of '\r' in the host.
I do not think it hurts to silently ignore a line that ends with CR,
but only because I do not think credential_from_url_gently() would
not match such a line when asked to match something without
complaining.
In other words, isn't the new "!strchr() &&" in the condition a
no-op?
> diff --git a/credential-store.c b/credential-store.c
> index c010497cb2..fdfb81e632 100644
> --- a/credential-store.c
> +++ b/credential-store.c
> @@ -24,8 +24,9 @@ static int parse_credential_file(const char *fn,
> }
>
> while (strbuf_getline_lf(&line, fh) != EOF) {
> - credential_from_url(&entry, line.buf);
> - if (entry.username && entry.password &&
> + if (strchr(line.buf, '\r') == NULL &&
> + !credential_from_url_gently(&entry, line.buf, 1) &&
> + entry.username && entry.password &&
> credential_match(c, &entry)) {
> found_credential = 1;
> if (match_cb) {
In any case, among the ones we discussed, this probably has the
least chance of unintended regression, I would think (with or
without the added "!strchr() &&" check), so let's queue it and
quickly merge it down thru 'next' to 'master'.
> diff --git a/t/t0302-credential-store.sh b/t/t0302-credential-store.sh
> index d6b54e8c65..9fd0aca55e 100755
> --- a/t/t0302-credential-store.sh
> +++ b/t/t0302-credential-store.sh
> @@ -107,7 +107,6 @@ test_expect_success 'store: if both xdg and home files exist, only store in home
> test_must_be_empty "$HOME/.config/git/credentials"
> '
>
> -
> test_expect_success 'erase: erase matching credentials from both xdg and home files' '
> echo "https://home-user:home-pass@example.com" >"$HOME/.git-credentials" &&
> mkdir -p "$HOME/.config/git" &&
> @@ -120,4 +119,63 @@ test_expect_success 'erase: erase matching credentials from both xdg and home fi
> test_must_be_empty "$HOME/.config/git/credentials"
> '
>
> +invalid_credential_test() {
> + test_expect_success 'get: ignore credentials without $1 as invalid' '
> + echo "$2" >"$HOME/.git-credentials" &&
> + check fill store <<-\EOF
> + protocol=https
> + host=example.com
> + --
> + protocol=https
> + host=example.com
> + username=askpass-username
> + password=askpass-password
> + --
> + askpass: Username for '\''https://example.com'\'':
> + askpass: Password for '\''https://askpass-username@example.com'\'':
> + --
> + EOF
> + '
> +}
> +
> +invalid_credential_test "scheme" ://user:pass@example.com
> +invalid_credential_test "valid host/path" https://user:pass@
> +invalid_credential_test "username/password" https://pass@example.com
These are quite clear to see. Nicely done.
> +test_expect_success 'get: credentials with DOS line endings are invalid' '
> + printf "https://user:pass@example.com\r\n" >"$HOME/.git-credentials" &&
> + check fill store <<-\EOF
> + protocol=https
> + host=example.com
> + --
> + protocol=https
> + host=example.com
> + username=askpass-username
> + password=askpass-password
> + --
> + askpass: Username for '\''https://example.com'\'':
> + askpass: Password for '\''https://askpass-username@example.com'\'':
> + --
> + EOF
> +'
What I am curious is if anything breaks around this test if you lost
the extra "!strchr() &&" check. I suspect that this test will pass.
> +test_expect_success 'get: store file can contain empty/bogus lines' '
> + echo "" >"$HOME/.git-credentials" &&
> + q_to_tab <<-\CREDENTIAL >>"$HOME/.git-credentials" &&
> + #comment
> + Q
> + https://user:pass@example.com
> + CREDENTIAL
> + check fill store <<-\EOF
> + protocol=https
> + host=example.com
> + --
> + protocol=https
> + host=example.com
> + username=user
> + password=pass
> + --
> + EOF
> +'
> +
> test_done
>
> base-commit: 49458fb91d61461938881559ce23abbb1a2f8c35
next prev parent reply other threads:[~2020-05-02 20:49 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-26 23:47 [PATCH] git-credential-store: skip empty lines and comments from store Carlo Marcelo Arenas Belón
2020-04-27 0:19 ` Eric Sunshine
2020-04-27 0:46 ` Carlo Marcelo Arenas Belón
2020-04-27 8:42 ` [PATCH v2] " Carlo Marcelo Arenas Belón
2020-04-27 11:52 ` Jeff King
2020-04-27 12:25 ` Carlo Marcelo Arenas Belón
2020-04-27 14:43 ` Eric Sunshine
2020-04-27 17:47 ` Junio C Hamano
2020-04-27 19:09 ` Jeff King
2020-04-27 12:59 ` [PATCH v3] " Carlo Marcelo Arenas Belón
2020-04-27 13:48 ` Philip Oakley
2020-04-28 1:49 ` Carlo Marcelo Arenas Belón
2020-04-29 10:09 ` Philip Oakley
2020-04-27 15:39 ` Dirk
2020-04-27 18:09 ` Junio C Hamano
2020-04-27 19:18 ` Jeff King
2020-04-27 20:43 ` Junio C Hamano
2020-04-27 21:10 ` Jeff King
2020-04-28 1:37 ` Carlo Marcelo Arenas Belón
2020-04-27 23:49 ` Carlo Marcelo Arenas Belón
2020-04-28 5:25 ` Jonathan Nieder
2020-04-28 5:41 ` Jeff King
2020-04-28 7:18 ` Carlo Marcelo Arenas Belón
2020-04-28 8:16 ` Jeff King
2020-04-28 11:25 ` Carlo Marcelo Arenas Belón
2020-04-28 10:58 ` Stefan Tauner
2020-04-28 16:03 ` Junio C Hamano
2020-04-28 21:14 ` Carlo Marcelo Arenas Belón
2020-04-28 21:17 ` Junio C Hamano
2020-04-28 10:48 ` [PATCH v4 0/4] credential-store: prevent fatal errors Carlo Marcelo Arenas Belón
2020-04-28 10:52 ` [PATCH v4 1/4] credential-store: document the file format a bit more Carlo Marcelo Arenas Belón
2020-04-28 10:52 ` [PATCH v4 2/4] git-credential-store: skip empty lines and comments from store Carlo Marcelo Arenas Belón
2020-04-28 16:09 ` Eric Sunshine
2020-04-28 16:42 ` Carlo Marcelo Arenas Belón
2020-04-28 10:52 ` [PATCH v4 3/4] git-credential-store: fix (WIP) Carlo Marcelo Arenas Belón
2020-04-28 16:11 ` Eric Sunshine
2020-04-28 17:14 ` Carlo Marcelo Arenas Belón
2020-04-28 10:52 ` [PATCH v4 4/4] credential-store: make sure there is no regression with missing scheme Carlo Marcelo Arenas Belón
2020-04-28 16:06 ` [PATCH v4 1/4] credential-store: document the file format a bit more Eric Sunshine
2020-04-28 18:18 ` Junio C Hamano
2020-04-28 18:15 ` Junio C Hamano
2020-04-29 0:33 ` [PATCH v5] credential-store: warn instead of fatal for bogus lines from store Carlo Marcelo Arenas Belón
2020-04-29 4:36 ` Junio C Hamano
2020-04-29 7:31 ` Carlo Marcelo Arenas Belón
2020-04-29 16:46 ` Junio C Hamano
2020-04-29 20:35 ` [RFC PATCH v6 0/2] credential-store: prevent fatal errors Carlo Marcelo Arenas Belón
2020-04-29 20:35 ` [RFC PATCH v6 1/2] credential-store: warn instead of fatal for bogus lines from store Carlo Marcelo Arenas Belón
2020-04-29 21:05 ` Junio C Hamano
2020-04-29 21:17 ` Junio C Hamano
2020-04-29 20:35 ` [RFC PATCH v6 2/2] credential-store: warn for any incomplete credentials instead of using Carlo Marcelo Arenas Belón
2020-04-29 21:12 ` Junio C Hamano
2020-04-29 21:49 ` [RFC PATCH v6 2/2] credential-store: warn for any incomplete credentials instead of usingy Carlo Marcelo Arenas Belón
2020-04-29 22:04 ` Junio C Hamano
2020-04-29 23:23 ` [PATCH v6] credential-store: warn instead of fatal for bogus lines from store Carlo Marcelo Arenas Belón
2020-04-29 23:47 ` Junio C Hamano
2020-04-29 23:57 ` Junio C Hamano
2020-04-30 1:00 ` Carlo Marcelo Arenas Belón
2020-04-30 1:19 ` [PATCH v7] " Carlo Marcelo Arenas Belón
2020-04-30 9:29 ` [PATCH v8] " Carlo Marcelo Arenas Belón
2020-04-30 16:06 ` [PATCH v9] " Carlo Marcelo Arenas Belón
2020-04-30 20:21 ` Junio C Hamano
2020-04-30 21:14 ` Junio C Hamano
2020-05-01 0:30 ` Carlo Marcelo Arenas Belón
2020-05-01 1:40 ` Junio C Hamano
2020-05-01 2:24 ` Carlo Arenas
2020-05-01 5:27 ` Junio C Hamano
2020-05-01 13:57 ` Carlo Marcelo Arenas Belón
2020-05-01 18:59 ` Junio C Hamano
2020-05-01 3:21 ` [RFC PATCH v10] credential-store: warn/ignore for bogus lines from store file Carlo Marcelo Arenas Belón
2020-05-01 5:18 ` [RFC PATCH v10 2/1] credential-store: warn also for store and erase Carlo Marcelo Arenas Belón
2020-05-01 5:35 ` Junio C Hamano
2020-05-02 18:16 ` [PATCH v10] credential-store: ignore bogus lines from store file Carlo Marcelo Arenas Belón
2020-05-02 20:47 ` Junio C Hamano [this message]
2020-05-02 21:23 ` Carlo Marcelo Arenas Belón
2020-05-02 21:53 ` Carlo Marcelo Arenas Belón
2020-05-03 0:44 ` Junio C Hamano
2020-05-03 10:06 ` Jeff King
2020-05-02 21:05 ` Carlo Marcelo Arenas Belón
2020-05-02 22:34 ` [PATCH v11] " Carlo Marcelo Arenas Belón
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