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agent: separate out daemon handling infrastructure for reuse

* agent/call-scd.c: Factor re-usable code out to ...
* agent/call-daemon.c: new.  Store infos in an array to allow for
other backend daemons.
* agent/Makefile.am (gpg_agent_SOURCES): Add new file.
* agent/agent.h: Include assuan.h.
(enum daemon_type): New.
(opt): Replace scdaemon_program by daemon_program array.  Replace
scd_local by a array d_local.  Change users accordingly.
--

The model I'm using for a TPM daemon is the current scdaemon.  That
includes start and stop handlers plus liveness checks and an assuan
socket generator.  To avoid massive code duplication (and save me a
lot of effort), I've elected to strip this code out of call-scd.c into
a generic framework which can then be reused as is by the TPM handling
daemon.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Co-authored-by: Werner Koch <wk@gnupg.org>

Modified original patch for 2.2 heavily to fit the new framework used
in master (gnupg 2.3)

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
James Bottomley 2020-06-24 12:44:02 +02:00 committed by Werner Koch
parent 2d8f060679
commit f541e1d95a
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
7 changed files with 759 additions and 583 deletions

View file

@ -3257,7 +3257,7 @@ cmd_getinfo (assuan_context_t ctx, char *line)
}
else if (!strcmp (line, "scd_running"))
{
rc = agent_scd_check_running ()? 0 : gpg_error (GPG_ERR_FALSE);
rc = agent_daemon_check_running (DAEMON_SCD)? 0:gpg_error (GPG_ERR_FALSE);
}
else if (!strcmp (line, "std_env_names"))
{
@ -3747,7 +3747,7 @@ start_command_handler (ctrl_t ctrl, gnupg_fd_t listen_fd, gnupg_fd_t fd)
clear_nonce_cache (ctrl);
/* Reset the SCD if needed. */
agent_reset_scd (ctrl);
agent_reset_daemon (ctrl);
/* Reset the pinentry (in case of popup messages). */
agent_reset_query (ctrl);