From 6c06f4e222a9a9abf19eaf242cc22ab750f9a2b2 Mon Sep 17 00:00:00 2001
From: Paulo Gomes <paulo.gomes@weave.works>
Date: Thu, 29 Sep 2022 07:01:36 +0100
Subject: [PATCH] The libgit2 libraries are downloaded and verified before some
 of the make targets are executed. This assures the provenance of such files
 before using them and is very important specially for end users running such
 tests on their machines.

Note that has been disabled specially due to recent issues
we experienced at CI which can be seen in:
fluxcd/source-controller#899

Signed-off-by: Paulo Gomes <paulo.gomes@weave.works>
---
 .github/workflows/cifuzz.yaml |  2 ++
 .github/workflows/e2e.yaml    |  2 ++
 .github/workflows/tests.yaml  |  5 +++++
 Makefile                      |  3 +++
 hack/install-libraries.sh     | 11 ++++++++---
 5 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/cifuzz.yaml b/.github/workflows/cifuzz.yaml
index ebf71fb1..6ff2940d 100644
--- a/.github/workflows/cifuzz.yaml
+++ b/.github/workflows/cifuzz.yaml
@@ -33,3 +33,5 @@ jobs:
           ${{ runner.os }}-go
     - name: Smoke test Fuzzers
       run: make fuzz-smoketest
+      env:
+        SKIP_COSIGN_VERIFICATION: true
diff --git a/.github/workflows/e2e.yaml b/.github/workflows/e2e.yaml
index 7a79f004..024885e8 100644
--- a/.github/workflows/e2e.yaml
+++ b/.github/workflows/e2e.yaml
@@ -47,6 +47,7 @@ jobs:
         uses: fluxcd/pkg/actions/helm@main
       - name: Run E2E tests
         env:
+          SKIP_COSIGN_VERIFICATION: true
           CREATE_CLUSTER: false
         run: make e2e
 
@@ -76,6 +77,7 @@ jobs:
           kind create cluster --name ${{ steps.prep.outputs.CLUSTER }} --kubeconfig=/tmp/${{ steps.prep.outputs.CLUSTER }}
       - name: Run e2e tests
         env:
+          SKIP_COSIGN_VERIFICATION: true
           KIND_CLUSTER_NAME: ${{ steps.prep.outputs.CLUSTER }}
           KUBECONFIG: /tmp/${{ steps.prep.outputs.CLUSTER }}
           CREATE_CLUSTER: false
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index edf92c39..67931add 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -34,6 +34,7 @@ jobs:
             ${{ runner.os }}-go-
       - name: Run tests
         env:
+          SKIP_COSIGN_VERIFICATION: true
           TEST_AZURE_ACCOUNT_NAME: ${{ secrets.TEST_AZURE_ACCOUNT_NAME }}
           TEST_AZURE_ACCOUNT_KEY: ${{ secrets.TEST_AZURE_ACCOUNT_KEY }}
         run: make test
@@ -51,6 +52,8 @@ jobs:
           go-version: 1.19.x
       - name: Run tests
         env:
+          SKIP_COSIGN_VERIFICATION: true
+
           TEST_AZURE_ACCOUNT_NAME: ${{ secrets.TEST_AZURE_ACCOUNT_NAME }}
           TEST_AZURE_ACCOUNT_KEY: ${{ secrets.TEST_AZURE_ACCOUNT_KEY }}
           
@@ -87,3 +90,5 @@ jobs:
             ${{ runner.os }}-go-
       - name: Run tests
         run: make test
+        env:
+          SKIP_COSIGN_VERIFICATION: true
diff --git a/Makefile b/Makefile
index 4207a121..66ffac72 100644
--- a/Makefile
+++ b/Makefile
@@ -12,6 +12,9 @@ GO_TEST_ARGS ?= -race
 # Allows for filtering tests based on the specified prefix
 GO_TEST_PREFIX ?=
 
+# Defines whether cosign verification should be skipped.
+SKIP_COSIGN_VERIFICATION ?= false
+
 # Allows for defining additional Docker buildx arguments,
 # e.g. '--push'.
 BUILD_ARGS ?=
diff --git a/hack/install-libraries.sh b/hack/install-libraries.sh
index 9e4966a5..aed0507a 100755
--- a/hack/install-libraries.sh
+++ b/hack/install-libraries.sh
@@ -6,6 +6,7 @@ IMG="${IMG:-}"
 TAG="${TAG:-}"
 IMG_TAG="${IMG}:${TAG}"
 DOWNLOAD_URL="https://github.com/fluxcd/golang-with-libgit2/releases/download/${TAG}"
+SKIP_COSIGN_VERIFICATION="${SKIP_COSIGN_VERIFICATION:-false}"
 
 TMP_DIR=$(mktemp -d)
 
@@ -48,9 +49,13 @@ cosign_verify(){
 assure_provenance() {
     [[ $# -eq 1 ]] || fatal 'assure_provenance needs exactly 1 arguments'
 
-    cosign_verify "${TMP_DIR}/checksums.txt.pem" \
-                  "${TMP_DIR}/checksums.txt.sig" \
-                  "${TMP_DIR}/checksums.txt"
+    if "${SKIP_COSIGN_VERIFICATION}"; then
+        echo 'Skipping cosign verification...'
+    else
+        cosign_verify "${TMP_DIR}/checksums.txt.pem" \
+                    "${TMP_DIR}/checksums.txt.sig" \
+                    "${TMP_DIR}/checksums.txt"
+    fi
 
     pushd "${TMP_DIR}" || exit
     if command -v sha256sum; then