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dirmngr: Use one context for all libdns queries.

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* dirmngr/dns-stuff.c (libdns_reinit_pending): New var.
(enable_recursive_resolver): Set var.
(set_dns_nameserver): Ditto.
(libdns_init): Avoid double initialization.
(libdns_deinit): New.
(reload_dns_stuff): New.
(libdns_res_open): Act upon LIBDNS_REINIT_PENDING.
* dirmngr/t-dns-stuff.c (main): Call reload_dns_stuff to release
memory.
* dirmngr/dirmngr.c (cleanup): Ditto.
(dirmngr_sighup_action): Call reload_dns_stuff to set
LIBDNS_REINIT_PENDING.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-12-16 21:00:14 +01:00
parent ddb4808683
commit c4e8a3194d
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GPG key ID: E3FDFF218E45B72B
4 changed files with 56 additions and 1 deletions
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dirmngr/dns-stuff.h
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@ -116,6 +116,8 @@ gpg_error_t enable_dns_tormode (int new_circuit);
next DNS query. Note that this is only used in Tor mode. */
void set_dns_nameserver (const char *ipaddr);
/* SIGHUP action handler for this module. */
void reload_dns_stuff (int force);
void free_dns_addrinfo (dns_addrinfo_t ai);