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Add handling for missing shasum

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On some platforms, including Fedora and derivatives, and Arch and
derivatives, the binary `shasum` does not exist.  Instead, sha256sum
should be used.

This patch checks for the existence of sha256sum, as well as shasum,
and uses whichever is present.  If none are present, a helpful error
message is printed out.

Tested on Fedora 28
  - Scenarios tested:

    -------------------------------
    | Sha256sum | shasum | Works? |
    |    Yes    |   No   |  Yes   |
    |    No     |   Yes  |  Yes   |
    |    Yes    |   Yes  |  Yes   |
    |    No     |   No   |  Yes   |
    -------------------------------
This commit is contained in:
Benjamin Porter 2018-06-28 19:26:05 -06:00
parent 84c111d2fc
commit 3bcfc82506
1 changed files with 18 additions and 1 deletions
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19
bin/install
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@ -187,6 +187,23 @@ download_and_verify_checksums() {
fi
}
checkShasum ()
{
local archive_file_name="${1}"
local authentic_checksum_file="${2}"
if $(which sha256sum >/dev/null 2>&1); then
sha256sum \
--check <(grep "\s${archive_file_name}$" "${authentic_checksum_file}")
elif $(which shasum >/dev/null 2>&1); then
shasum \
-a 256 \
--check <(grep "\s${archive_file_name}$" "${authentic_checksum_file}")
else
echo "sha256sum or shasum is not available for use" >&2
return 1
fi
}
verify_archive() {
local tmp_download_dir="$1"
@ -208,7 +225,7 @@ verify_archive() {
(
cd "${tmp_download_dir}"
if ! shasum -a 256 --check <(grep "\s$archive_file_name$" "${authentic_checksum_file}"); then
if ! checkShasum "$archive_file_name" "$authentic_checksum_file"; then
echo "Authenticity of package archive can not be assured. Exiting." >&2
exit 1
fi