with-ssh: init

1 files changed, 37 insertions, 0 deletions

diff --git a/pkgs/shell/with-ssh b/pkgs/shell/with-ssh
new file mode 100755
index 0000000..65459e2
--- /dev/null
+++ b/pkgs/shell/with-ssh
@@ -0,0 +1,37 @@
+#! /bin/sh
+#!buildShellBin prepend-path=openssh
+#
+# usage: with-ssh [--add[=KEY] ...] [COMMAND [ARGS ...]]
+#
+
+set -efu
+
+case ${WITH_SSH_STAGE-1} in
+  1)
+    export WITH_SSH_STAGE=2
+    exec ssh-agent "$0" "$@"
+    ;;
+  2)
+    if test $# = 0; then
+      set -- "$SHELL"
+    fi
+    case "$1" in
+      --add)
+        shift
+        ssh-add
+        exec "$0"
+        ;;
+      --add=*)
+        key=$1; shift
+        key=${key#--add=}
+        ssh-add "$key"
+        exec "$0" "$@"
+        ;;
+      *)
+        exec "$@"
+    esac
+    ;;
+  *)
+    echo "with-ssh: error: bad stage: $WITH_SSH_STAGE" >&2
+    exit 1
+esac