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gpgsm: Implement a cache for the KEYINFO queries.

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* sm/gpgsm.h (struct keyinfo_cache_item_s): New.
(struct server_control_s): Add keyinfo_cache and keyinfo_cache_valid.
* sm/call-agent.c (keyinfo_cache_disabled): New flag.
(release_a_keyinfo_cache): New.
(gpgsm_flush_keyinfo_cache): New.
(struct keyinfo_status_parm_s): New.
(keyinfo_status_cb): Implement a fill mode.
(gpgsm_agent_keyinfo): Implement a cache.
* sm/server.c (reset_notify): Flush the cache.
* sm/gpgsm.c (gpgsm_deinit_default_ctrl): Ditto.
--

In almost all cases we have just a few private keys in the agent and
thus it is better to fetch them early.  This does not work in a
restricted connection but we take care and disable the cache in this
case.

This cache gives a a minor speed up.

GnuPG-bug-id: 7308
(cherry picked from commit 241971fac0)
This commit is contained in:
Werner Koch 2024-10-02 16:44:04 +02:00
parent 09d4b8f496
commit 9087c1d363
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GPG key ID: E3FDFF218E45B72B
4 changed files with 154 additions and 20 deletions
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sm/gpgsm.c
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@ -2169,6 +2169,7 @@ gpgsm_deinit_default_ctrl (ctrl_t ctrl)
{
unsigned int n;
gpgsm_flush_keyinfo_cache (ctrl);
n = 0;
while (ctrl->parent_cert_cache)
{