From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 126BF51010; Tue, 21 Nov 2023 20:54:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="l6QuB6h0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D78A8C433C7; Tue, 21 Nov 2023 20:54:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1700600078; bh=GyHN4wCOMA8c6nPwQG+j0NoaqWqZE4TlER9FWsCywLo=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=l6QuB6h0ZmMyA+kEHo0OihyS7AcrZlKV05jgRPUt0y3RxWlmN2z1O140qnaqpQgmf IHu/xhzVG3pcsQAHwHQF1uhjzH5aNMMq9Qq4LHONJfp4dnhJQNazfH6QlSl7GNq5zL dFMlIqCh4gWsnHMa0VWTE3JoxhIDmWjk2O4FyieAdPGg0vhiUK4zUqs/HlpfWHApwa j6hwjquCTDYnMa1mYZ/lEQcXlVo1hxB+ncICI1GmZtoiBmGDqHotm5MaCgO9LwwVZn JPDkiSNChbPGKIsXJxxVvWgHlAIoO+BeHvM3A+E/51prSkA4kqH1yR5McuRJZj821k wTtV8xWgF/rPw== Message-ID: <89f0dbe3a390dd2d49b09c0ff75a142aa44793fd.camel@kernel.org> Subject: Re: [PATCH v3] sign-file: Fix incorrect return values check From: Jarkko Sakkinen To: Yusong Gao , davem@davemloft.net, dhowells@redhat.com, dwmw2@infradead.org, juergh@proton.me, zohar@linux.ibm.com, herbert@gondor.apana.org.au, lists@sapience.com, dimitri.ledkov@canonical.com Cc: keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org Date: Tue, 21 Nov 2023 22:54:33 +0200 In-Reply-To: <20231121034044.847642-1-a869920004@gmail.com> References: <20231121034044.847642-1-a869920004@gmail.com> Autocrypt: addr=jarkko@kernel.org; prefer-encrypt=mutual; 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OhxtP1vYUoyv1iQpYsijVlqHhqbA7Va/jVwBJi40tjMFS0E91mK1iRtBzA== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.1 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Tue, 2023-11-21 at 03:40 +0000, Yusong Gao wrote: > There are some wrong return values check in sign-file when call > OpenSSL > API. The ERR() check cond is wrong because of the program only check > the > return value is < 0 instead of <=3D 0. For example: > 1. CMS_final() return 1 for success or 0 for failure. > 2. i2d_CMS_bio_stream() returns 1 for success or 0 for failure. > 3. i2d_TYPEbio() return 1 for success and 0 for failure. > 4. BIO_free() return 1 for success and 0 for failure. >=20 > Link: https://www.openssl.org/docs/manmaster/man3/ > Fixes: e5a2e3c84782 ("scripts/sign-file.c: Add support for signing > with a raw signature") >=20 No empty line here. > Signed-off-by: Yusong Gao > --- > V1, V2: Clarify the description of git message. > --- > =C2=A0scripts/sign-file.c | 12 ++++++------ > =C2=A01 file changed, 6 insertions(+), 6 deletions(-) >=20 > diff --git a/scripts/sign-file.c b/scripts/sign-file.c > index 598ef5465f82..dcebbcd6bebd 100644 > --- a/scripts/sign-file.c > +++ b/scripts/sign-file.c > @@ -322,7 +322,7 @@ int main(int argc, char **argv) > =C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0 CMS_NOSMIMECAP | use_keyid | > =C2=A0 =C2=A0=C2=A0=C2=A0=C2=A0 use_signed_attrs), > =C2=A0 =C2=A0=C2=A0=C2=A0 "CMS_add1_signer"); > - ERR(CMS_final(cms, bm, NULL, CMS_NOCERTS | > CMS_BINARY) < 0, > + ERR(CMS_final(cms, bm, NULL, CMS_NOCERTS | > CMS_BINARY) <=3D 0, > =C2=A0 =C2=A0=C2=A0=C2=A0 "CMS_final"); > =C2=A0 > =C2=A0#else > @@ -341,10 +341,10 @@ int main(int argc, char **argv) > =C2=A0 b =3D BIO_new_file(sig_file_name, "wb"); > =C2=A0 ERR(!b, "%s", sig_file_name); > =C2=A0#ifndef USE_PKCS7 > - ERR(i2d_CMS_bio_stream(b, cms, NULL, 0) < 0, > + ERR(i2d_CMS_bio_stream(b, cms, NULL, 0) <=3D > 0, > =C2=A0 =C2=A0=C2=A0=C2=A0 "%s", sig_file_name); > =C2=A0#else > - ERR(i2d_PKCS7_bio(b, pkcs7) < 0, > + ERR(i2d_PKCS7_bio(b, pkcs7) <=3D 0, > =C2=A0 =C2=A0=C2=A0=C2=A0 "%s", sig_file_name); > =C2=A0#endif > =C2=A0 BIO_free(b); > @@ -374,9 +374,9 @@ int main(int argc, char **argv) > =C2=A0 > =C2=A0 if (!raw_sig) { > =C2=A0#ifndef USE_PKCS7 > - ERR(i2d_CMS_bio_stream(bd, cms, NULL, 0) < 0, "%s", > dest_name); > + ERR(i2d_CMS_bio_stream(bd, cms, NULL, 0) <=3D 0, "%s", > dest_name); > =C2=A0#else > - ERR(i2d_PKCS7_bio(bd, pkcs7) < 0, "%s", dest_name); > + ERR(i2d_PKCS7_bio(bd, pkcs7) <=3D 0, "%s", dest_name); > =C2=A0#endif > =C2=A0 } else { > =C2=A0 BIO *b; > @@ -396,7 +396,7 @@ int main(int argc, char **argv) > =C2=A0 ERR(BIO_write(bd, &sig_info, sizeof(sig_info)) < 0, "%s", > dest_name); > =C2=A0 ERR(BIO_write(bd, magic_number, sizeof(magic_number) - 1) < > 0, "%s", dest_name); > =C2=A0 > - ERR(BIO_free(bd) < 0, "%s", dest_name); > + ERR(BIO_free(bd) <=3D 0, "%s", dest_name); > =C2=A0 > =C2=A0 /* Finally, if we're signing in place, replace the original. > */ > =C2=A0 if (replace_orig) BR, Jarkko