[PATCH v2] Use sha256 for hashes in the release process

[Simon Marchi]

On 2020-10-25 11:03 p.m., andreas@rammhold.de wrote:

Again, this must be sent to the binutils mailing list as well, I added
it.

Here's the link to the patch:

    https://sourceware.org/pipermail/gdb-patches/2020-October/172866.html

> From: Andreas Rammhold <andreas@rammhold.de>
>
> I just came across the GDB 10.1 release notes and saw that md5 is still
> being used in those. I thought it would be a good idea to instead have a
> more modern, secure and wildly available hash function such as SHA256 as
> part of the release process.
>
> The changes have been done rather mechnically via sed but executing the
> `src-release.sh -b gdb` did work so I am confident about the result.
>
> While this does not directly address the release mails, I was wasn't
> able to find the template/script used for those, this is probably still
> an improvement.
>
> ChangeLog:
> 	* src-release.sh: Use sha256sum instead of md5sum.
>
> binutils/ChangeLog:
> 	* README-how-to-make-a-release: Use sha256sum instead of md5sum.
> ---
>  ChangeLog                             |  3 +++
>  binutils/ChangeLog                    |  3 +++
>  binutils/README-how-to-make-a-release |  4 ++--
>  src-release.sh                        | 18 +++++++++---------
>  4 files changed, 17 insertions(+), 11 deletions(-)
>
> diff --git a/ChangeLog b/ChangeLog
> index 9daa7be322..e9e5f754bd 100644
> --- a/ChangeLog
> +++ b/ChangeLog
> @@ -1,3 +1,6 @@
> +2020-10-26  Andreas Rammhold <andreas@rammhold.de>
> +	* src-release.sh: Use sha256sum instead of md5sum.
> +
>  2020-10-14  Andrew Burgess  <andrew.burgess@embecosm.com>
>
>  	* Makefile.in: Rebuild.
> diff --git a/binutils/ChangeLog b/binutils/ChangeLog
> index 4c14fd1510..8772a930b2 100644
> --- a/binutils/ChangeLog
> +++ b/binutils/ChangeLog
> @@ -1,3 +1,6 @@
> +2020-10-26  Andreas Rammhold <andreas@rammhold.de>
> +	* README-how-to-make-a-release: Use sha256sum instead of md5sum.
> +
>  2020-10-22  H.J. Lu  <hongjiu.lu@intel.com>
>
>  	* testsuite/binutils-all/objcopy.exp (objcopy_test): Report
> diff --git a/binutils/README-how-to-make-a-release b/binutils/README-how-to-make-a-release
> index abb2438c5c..db962e2f55 100644
> --- a/binutils/README-how-to-make-a-release
> +++ b/binutils/README-how-to-make-a-release
> @@ -124,7 +124,7 @@ How to perform a release.
>
>            cd <branch-sources>
>            scp binutils-<OLD_VERSION>.90.tar.xz sourceware.org:~ftp/pub/binutils/snapshots
> -          ssh sourceware.org md5sum ~ftp/pub/binutils/snapshots/binutils-<OLD_VERSION>.90.tar.xz
> +          ssh sourceware.org sha256sum ~ftp/pub/binutils/snapshots/binutils-<OLD_VERSION>.90.tar.xz
>
>       e. Clean up the source directory again.
>
> @@ -364,7 +364,7 @@ Cheers
>        David Edelsohn <dje.gcc@gmail.com> announcing the new release.
>        Sign the email and include the checksum:
>
> -          md5sum binutils-2.3x.tar.*
> +          sha256sum binutils-2.3x.tar.*
>
>        (The email to Davis is so that he can update the GNU Toolchain
>        social media).  Something like this:
> diff --git a/src-release.sh b/src-release.sh
> index 1f69deeb0e..fd65856a55 100755
> --- a/src-release.sh
> +++ b/src-release.sh
> @@ -26,7 +26,7 @@ BZIPPROG=bzip2
>  GZIPPROG=gzip
>  LZIPPROG=lzip
>  XZPROG=xz
> -MD5PROG=md5sum
> +SHA256PROG=sha256sum
>  MAKE=make
>  CC=gcc
>  CXX=g++
> @@ -168,15 +168,15 @@ do_proto_toplev()
>
>  CVS_NAMES='-name CVS -o -name .cvsignore'
>
> -# Add an md5sum to the built tarball
> -do_md5sum()
> +# Add a sha256sum to the built tarball
> +do_sha256sum()
>  {
> -    echo "==> Adding md5 checksum to top-level directory"
> +    echo "==> Adding sha256 checksum to top-level directory"
>      (cd proto-toplev && find * -follow \( $CVS_NAMES \) -prune \
>  	-o -type f -print \
> -	| xargs $MD5PROG > ../md5.new)
> -    rm -f proto-toplev/md5.sum
> -    mv md5.new proto-toplev/md5.sum
> +	| xargs $SHA256PROG > ../sha256.new)
> +    rm -f proto-toplev/sha256.sum
> +    mv sha256.new proto-toplev/sha256.sum
>  }
>
>  # Build the release tarball
> @@ -276,7 +276,7 @@ tar_compress()
>      verdir=${5:-$tool}
>      ver=$(getver $verdir)
>      do_proto_toplev $package $ver $tool "$support_files"
> -    do_md5sum
> +    do_sha256sum
>      do_tar $package $ver
>      do_compress $package $ver "$compressors"
>  }
> @@ -290,7 +290,7 @@ gdb_tar_compress()
>      compressors=$4
>      ver=$(getver $tool)
>      do_proto_toplev $package $ver $tool "$support_files"
> -    do_md5sum
> +    do_sha256sum
>      do_djunpack $package $ver
>      do_tar $package $ver
>      do_compress $package $ver "$compressors"
> --
> 2.28.0
>