79 lines
4 KiB
Bash
79 lines
4 KiB
Bash
#!/bin/sh
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# Exact staged executable, real receive-pack, private synthetic tmpfs inputs.
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set +vx
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set -eu
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PATH=/usr/bin:/bin
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export PATH
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version=$1 dispatcher=$2
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test "$(id -u)" = 1000
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test "$(stat -f -c %t /dev/shm)" = 1021994
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umask 077
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base=$(mktemp -d /dev/shm/forge-receive-activation-XXXXXXXX)
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printf '%s' receive-batch-probe > "$base/.owner"
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phase=setup
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cleanup() {
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code=$?
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trap - EXIT HUP INT TERM
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if test "$code" != 0; then printf '{"probe_phase":"%s","exit_code":%s,"result":"unverified"}\n' "$phase" "$code" >&2; fi
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if test -d "$base" && test ! -L "$base" && test "$(cat "$base/.owner")" = receive-batch-probe; then
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rm -rf -- "$base" || code=41
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else code=41; fi
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exit "$code"
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}
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trap cleanup EXIT
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trap 'exit 42' HUP INT TERM
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export HOME="$base" TMPDIR="$base" GIT_CONFIG_NOSYSTEM=1 GIT_CONFIG_GLOBAL=/dev/null GIT_TERMINAL_PROMPT=0
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mkdir -p "$base/template/hooks/pre-receive.d"
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hook="$base/template/hooks/pre-receive.d/10-custodian-secret-scan"
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printf '#!/bin/sh\nset +vx\nset -eu\nexec %s/receive-secret-scan --scanner %s/gitleaks\n' "$version" "$version" > "$hook"
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chmod 755 "$hook"
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git -c init.templateDir="$base/template" init -q --bare "$base/server.git"
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cp "$dispatcher" "$base/server.git/hooks/pre-receive"
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chmod 755 "$base/server.git/hooks/pre-receive"
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git init -q -b main "$base/client"
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git -C "$base/client" config core.hooksPath "$base/no-hooks"
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git -C "$base/client" config user.name 'Custodian isolated receive probe'
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git -C "$base/client" config user.email 'probe@example.test'
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printf 'clean baseline\n' > "$base/client/source.txt"
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git -C "$base/client" add source.txt
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git -C "$base/client" commit -qm 'isolated clean baseline'
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phase=clean_push
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git -C "$base/client" push "$base/server.git" HEAD:refs/heads/main > "$base/clean.out" 2>&1
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grep -q '"status":"clean"' "$base/clean.out"
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initial=$(git -C "$base/client" rev-parse HEAD)
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phase=synthetic_key
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ssh-keygen -q -t ed25519 -N '' -f "$base/synthetic-key" >/dev/null 2>&1
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cp "$base/synthetic-key" "$base/client/fixture.txt"
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git -C "$base/client" add fixture.txt
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git -C "$base/client" commit -qm 'isolated synthetic fixture'
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rejected=$(git -C "$base/client" rev-parse HEAD)
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git -C "$base/client" rm -q fixture.txt
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git -C "$base/client" commit -qm 'remove fixture from tip'
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phase=blocked_history
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if git -C "$base/client" push "$base/server.git" HEAD:refs/heads/main > "$base/blocked.out" 2>&1; then exit 43; fi
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grep -q '"status":"blocked"' "$base/blocked.out"
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if grep -q 'BEGIN OPENSSH PRIVATE KEY' "$base/blocked.out"; then exit 44; fi
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if git -C "$base/server.git" cat-file -e "$rejected" >/dev/null 2>&1; then exit 45; fi
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test "$(git -C "$base/server.git" rev-parse refs/heads/main)" = "$initial"
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git -C "$base/client" checkout -qb recovery "$initial"
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printf 'clean recovery\n' > "$base/client/source.txt"
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git -C "$base/client" add source.txt
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git -C "$base/client" commit -qm 'isolated clean recovery'
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phase=unavailable_scanner
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recovery=$(git -C "$base/client" rev-parse HEAD)
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cp "$hook" "$base/saved-hook"
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printf '#!/bin/sh\nexec %s/receive-secret-scan --scanner /nonexistent\n' "$version" > "$base/server.git/hooks/pre-receive.d/10-custodian-secret-scan"
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if git -C "$base/client" push "$base/server.git" HEAD:refs/heads/main > "$base/unavailable.out" 2>&1; then exit 46; fi
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grep -q '"status":"unverified"' "$base/unavailable.out"
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test "$(git -C "$base/server.git" rev-parse refs/heads/main)" = "$initial"
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if git -C "$base/server.git" cat-file -e "$recovery" >/dev/null 2>&1; then exit 47; fi
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cp "$base/saved-hook" "$base/server.git/hooks/pre-receive.d/10-custodian-secret-scan"
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phase=clean_recovery
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git -C "$base/client" push "$base/server.git" HEAD:refs/heads/main > "$base/recovered.out" 2>&1
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grep -q '"status":"clean"' "$base/recovered.out"
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test "$(git -C "$base/server.git" rev-parse refs/heads/main)" = "$recovery"
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trap - EXIT HUP INT TERM
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test "$(cat "$base/.owner")" = receive-batch-probe
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rm -rf -- "$base"
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test ! -e "$base"
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printf '{"clean_push":true,"intermediate_secret_refused":true,"quarantine_discarded":true,"scanner_unavailable_refused":true,"clean_recovery":true,"temporary_probe_removed":true,"builtin_authorization_excluded":true}\n'
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