From 109ac55b2aea35b48ebd09766e1c28ad77d6182c Mon Sep 17 00:00:00 2001
From: dormando <dormando@rydia.net>
Date: Wed, 19 Apr 2023 14:23:50 -0700
Subject: vendor: improve fetch script

allow using a pre-existing tarball instead of fetching from github, and
also test the sha before using it.
---
 vendor/fetch.sh | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/vendor/fetch.sh b/vendor/fetch.sh
index 2d54142..369bb62 100755
--- a/vendor/fetch.sh
+++ b/vendor/fetch.sh
@@ -1,5 +1,22 @@
 #!/bin/sh
-HASH="44a55dee1d41c3ae92524df9f0dd8a747db79f04"
-wget https://github.com/memcached/memcached-vendor/archive/${HASH}.tar.gz 
-tar -zxf ./${HASH}.tar.gz --strip-components=1
-rm ${HASH}.tar.gz
+GITHASH="44a55dee1d41c3ae92524df9f0dd8a747db79f04"
+SHA="8d79b8f096c68ed827743dfded55981f1c7f297d"
+FILE="${GITHASH}.tar.gz"
+
+if ! command -v shasum >/dev/null 2>&1; then
+    echo "missing command: shasum"
+    exit 1
+fi
+
+if [ ! -f "$FILE" ]; then
+    wget https://github.com/memcached/memcached-vendor/archive/$FILE
+fi
+
+hash=$(shasum "$FILE" | awk '{print $1}')
+if [ "$SHA" = "$hash" ]; then
+    tar -zxf ./$FILE --strip-components=1
+    rm $FILE
+else
+    echo "vendor file hash did not match"
+    exit 1
+fi
-- 
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