Initial implementation of the __pass type.

type/__pass/gencode-local

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+#!/bin/sh -e
+#
+# 2020 Joachim Desroches (joachim.desroches@epfl.ch)
+#
+# This file is part of cdist.
+#
+# cdist is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# cdist is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# Length of generated password.
+LENGTH=
+
+# Keep password strictly alphanumeric.
+NOSYMB=
+
+# Check pass is installed.
+command -v pass >/dev/null 2>&1 ||
+	{
+		cat <<- EOF >&2
+		__pass: this type requires pass installed.
+		See https://www.passwordstore.org/.
+		EOF
+		exit 1;
+	}
+
+# Check for optional length parameter.
+if [ -f "${__object:?}/parameter/length" ];
+then
+	LENGTH="$(cat "${__object:?}/parameter/length")"
+fi
+
+# Check for optional no symbols parameter.
+if [ -f "${__object:?}/parameter/no-symbols" ];
+then
+	NOSYMB="-n"
+fi
+
+# Load required GPG ID parameters.
+set --
+while read -r id;
+do
+	set -- "$@" "$id"
+done < "${__object:?}/parameter/gpgid"
+
+# Load required password store location parameter.
+PASSWORD_STORE_DIR="$(cat "${__object:?}/parameter/storedir")"
+export PASSWORD_STORE_DIR
+
+# Run every time in case GPG IDs are updated.
+pass init "$@" >/dev/null
+
+# Generate a password if it does not already exist.
+if [ ! -f "${PASSWORD_STORE_DIR}/${__object_id:?}.gpg" ];
+then
+	# shellcheck disable=SC2086
+	pass generate $NOSYMB "${__object_id:?}" $LENGTH
+fi
+
+# Send it out to the messages.
+pass "${__object_id:?}" >> "${__messages_out:?}"

type/__pass/man.rst

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+cdist-type__pass(7)
+===================
+
+NAME
+----
+cdist-type__pass - Generate and use passwords using pass(1).
+
+
+DESCRIPTION
+-----------
+This type allows a user to generate and query passwords stored using pass(1) on
+the host machine. The password is then printed to the cdist message system, so
+types depending on this one should require it. This enables an administrator to
+ensure a password exists using this type and then, from another type, use it as
+need be.
+
+This type also sets the GPG IDs used to encrypt the password store: beware that
+the IDs passed in the last ran invocation of the type will be the ones set for
+the store.
+
+REQUIRED PARAMETERS
+-------------------
+storedir
+    The host-local directory where the password store is to be found (or
+    created if it does not exist).
+
+
+REQUIRED MULTIPLE PARAMETERS
+----------------------------
+gpgid
+    The GPG IDs of the public keys used to encrypt the password store.
+
+OPTIONAL PARAMETERS
+-------------------
+length
+    The length of the password to be created if it does not exist. Note that if
+    it exists, this has no effect (and hence will not update the password, even
+    if the length is different from the one specified).
+
+BOOLEAN PARAMETERS
+------------------
+no-symbols
+    If this parameter is set, then a newly generated password will only contain
+    alphanumeric characters, making it easier for typing by meatware.
+
+
+EXAMPLES
+--------
+
+Assuming that __othertype takes the path of the password as an argument and
+looks up in the cdist messages to find it:
+
+.. code-block:: sh
+
+    __pass database/services/arandomservice
+        --storedir password/store/location
+        --gpgpid 92296965EAA1DD86A93284EF7B21E5AA32FB9810
+
+   require='__pass/database/services/arandomservice' \
+     __othertype --password database/service/arandomservice
+
+--
+
+SEE ALSO
+--------
+`pass`\ (7)
+
+
+AUTHORS
+-------
+Joachim Desroches <joachim.desroches@epfl.ch>
+
+
+COPYING
+-------
+Copyright \(C) 2020 Joachim Desroches. You can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation, either version 3 of the
+License, or (at your option) any later version.

type/__pass/parameter/boolean

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+no-symbols

type/__pass/parameter/optional

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+length

type/__pass/parameter/required

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+storedir

type/__pass/parameter/required_multiple

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+gpgid