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Date:      Sat, 9 May 2015 15:54:09 -0700
From:      Garrett Cooper <yaneurabeya@gmail.com>
To:        Baptiste Daroussin <bapt@FreeBSD.org>
Cc:        "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r282685 - head/usr.sbin/pw
Message-ID:  <4DE758E7-BE6B-45D6-A184-9443FB21F4A7@gmail.com>
In-Reply-To: <201505091912.t49JCHRf067749@svn.freebsd.org>
References:  <201505091912.t49JCHRf067749@svn.freebsd.org>

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> On May 9, 2015, at 12:12, Baptiste Daroussin <bapt@FreeBSD.org> wrote:
>=20
> Author: bapt
> Date: Sat May  9 19:12:16 2015
> New Revision: 282685
> URL: https://svnweb.freebsd.org/changeset/base/282685
>=20
> Log:
>  Replace malloc(3) + strcpy(3) + strcat(3) by asprintf(3)
>=20
> Modified:
>  head/usr.sbin/pw/pw_user.c
>=20
> Modified: head/usr.sbin/pw/pw_user.c
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
> --- head/usr.sbin/pw/pw_user.c    Sat May  9 19:11:01 2015    (r282684)
> +++ head/usr.sbin/pw/pw_user.c    Sat May  9 19:12:16 2015    (r282685)
> @@ -363,11 +363,9 @@ pw_user(struct userconf * cnf, int mode,
>        if (mode =3D=3D M_LOCK) {
>            if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) =3D=
=3D 0)
>                errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_nam=
e);
> -            passtmp =3D malloc(strlen(pwd->pw_passwd) + sizeof(locked_str=
));
> +            asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd);
>            if (passtmp =3D=3D NULL)    /* disaster */
>                errx(EX_UNAVAILABLE, "out of memory");
> -            strcpy(passtmp, locked_str);
> -            strcat(passtmp, pwd->pw_passwd);
>            pwd->pw_passwd =3D passtmp;
>            edited =3D 1;
>        } else if (mode =3D=3D M_UNLOCK) {

Please check the return values from asprintf..=



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