1 files changed, 22 insertions, 0 deletions

diff --git a/bin/mail/append_authorized_key.sh b/bin/mail/append_authorized_key.sh
new file mode 100755
index 0000000..950be90
--- /dev/null
+++ b/bin/mail/append_authorized_key.sh
@@ -0,0 +1,22 @@
+#! /bin/bash
+
+# Append last line of mail into ~/.ssh/authorized_keys
+# Usage:
+#   1. put this file into ~/.forward
+#   2. send mail with header "Passphase: ", and value in ~/.config/passphase
+#   3. try ssh
+
+# Restore mail in variable
+MAIL="$(cat)"
+
+# Get user passphase
+test -f ~/.config/passphase || exit 1
+PASSPHASE="$(cat ~/.config/passphase)"
+
+# Only execute the following script when header matched
+grep -qE "^Passphase: ${PASSPHASE}" <<<"$MAIL" || exit 0
+
+# Append comment and last line to ~/.ssh/authorized_keys
+exec 1>>~/.ssh/authorized_keys
+<<<"$MAIL" grep 'From:' | head -1 | sed 's/^/# /'
+<<<"$MAIL" sed -En '/^.+/p' | tail -1