gpg: Move all DNS access to Dirmngr.
* common/dns-cert.h: Move to ../dirmngr/. * common/dns-cert.c: Move to ../dirmngr/. Change args to return the key as a buffer. * common/t-dns-cert.c: Move to ../dirmngr/. * common/pka.c, common/pka.h, common/t-pka.c: Remove. * dirmngr/server.c (data_line_cookie_write): Factor code out to data_line_write and make it a wrapper for that. (data_line_write): New. (cmd_dns_cert): New. (register_commands): Register new command. * g10/Makefile.am (LDADD): Remove DNSLIBS. * g10/call-dirmngr.c (dns_cert_parm_s): New. (dns_cert_data_cb, dns_cert_status_cb): New. (gpg_dirmngr_dns_cert): New. (gpg_dirmngr_get_pka): New. * g10/gpgv.c (gpg_dirmngr_get_pka): New dummy function. * g10/keyserver.c (keyserver_import_cert): Replace get_dns_cert by gpg_dirmngr_dns_cert. (keyserver_import_pka): Replace get_pka_info by gpg_dirmngr_get_pka. * g10/mainproc.c: Include call-dirmngr.h. (pka_uri_from_sig): Add CTX arg. Replace get_pka_info by gpg_dirmngr_get_pka.
With this patch gpg does not do any network access itself but uses
dirmngr for that. Note that we need to keep linking to NETLIBS due to
the logging code and because we need TCP for our socket emulation
under Windows. Probably also required for Solaris etc.
- Signed-off-by: Werner Koch <wk@gnupg.org>