agent: Create and use Token entries to track the display s/n.
dc9b2426288e
Actions

Description

agent: Create and use Token entries to track the display s/n.

* agent/divert-scd.c (linefeed_to_percent0A): New.
(ask_for_card): Add arg grip.  Read Token and Label items and use
them.
(divert_pksign, divert_pkdecrypt): Pass down grip.
* agent/findkey.c (write_extended_private_key): Add args serialno,
keyref, and dispserialno.  Writen Token item.
(agent_write_private_key): Add args serialno, keyref, and
dispserialno.
(read_key_file): Add arg r_keymeta.
(agent_keymeta_from_file): New.
(agent_write_shadow_key): Remove leading spaces from serialno and keyid.
* agent/protect-tool.c (agent_write_private_key): Ditto.
* agent/learncard.c (agent_handle_learn): Get DISPSERIALNO and pass to
agent_write_shadow_key.
* agent/command-ssh.c (card_key_available): Ditto.

This patch backports some changes from master but also adds the
Display-S/N tracking.