[Buildroot] [PATCH 5/6] pkg-infra: add possiblity to check downloaded files against known hashes

[Yann E. MORIN]

Baruch, All,

On 2014-01-13 06:53 +0200, Baruch Siach spake thusly:
> On Mon, Jan 13, 2014 at 12:44:48AM +0100, Yann E. MORIN wrote:
[--SNIP--]
> > diff --git a/support/download/check-hash b/support/download/check-hash
> > new file mode 100755
> > index 0000000..5cf708f
> > --- /dev/null
> > +++ b/support/download/check-hash
> > @@ -0,0 +1,38 @@
> > +#!/bin/sh
> > +set -e
> > +
> > +# Helper to check a file matches its known hash
> > +# Call it with:
> > +#   $1: the basename of the package's tarball
> > +#   $2: the full path to the file to check
> > +#   $3: the path of the file containing all the the expected hashes
> > +
> > +tarball="${1}"
> > +file="${2}"
> > +h_file="${3}"
> > +
> > +# Does the hash-file exist?
> > +if [ ! -f "${h_file}" ]; then
> > +    exit 0
> > +fi
> > +
> > +# Do we know a hash for that tarball?
> > +known=$( grep -E '^[[:xdigit:]]+[[:space:]]{2}'"${tarball}"'$$' "${h_file}" \
> > +         |cut -d ' ' -f 1
> > +       )
> > +if [ -z "${known}" ]; then
> > +    exit 0
> > +fi
> > +
> > +# Do the hashes match?
> > +hash=$( sha1sum "${file}" |cut -d ' ' -f 1 )
> > +if [ "${hash}" = "${known}" ]; then
> > +    exit 0
> > +fi
> > +
> > +printf "ERROR: %s has wrong SHA256\n" "${tarball}"
> 
> That's SHA1.

Doh, good catch!

Thank you!

Regards,
Yann E. MORIN.

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