tlsproxy-setup: Prevent accidental overwrites.

[tlsproxy/tlsproxy.git] / src / tlsproxy-setup

diff --git a/src/tlsproxy-setup b/src/tlsproxy-setup
index d76c998689454c38d004a93d304f00aa932302ee..155b8c90786c9aff26a520b0d9caad45dfbec69d 100755 (executable)
--- a/src/tlsproxy-setup
+++ b/src/tlsproxy-setup
@@ -23,11 +23,23 @@
 set -e
 
 
-if test "$#" -ne 0; then
-    echo "Usage: $0"
+if test "$#" -ge 1 && test x"$*" != 'x--force'; then
+    echo "Usage: $0 [--force]" >&2
     exit 1
 fi
 
+# Prevent accidental overwrites.
+if test x"$1" != 'x--force'; then
+    for x in proxy-ca-key.pem proxy-ca.pem \
+             proxy-key.pem proxy-invalid.pem proxy-dh.pem; do
+        if test -f "$x"; then
+            echo "File '$x' already exists. Use --force to overwrite." >&2
+            exit 2
+        fi
+    done
+fi
+
+
 tempfile=`mktemp`
 trap 'rm -f "$tempfile"' EXIT