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* dirmngr/dns.c (dns_nssconf_loadfile): Skip negation terms in
nsswitch.conf parser.
--
This small patch was submitted along with this comment:
We've been having issues over at Arch Linux with the new libdns
code. Our /etc/nsswitch.conf contains the following line:
hosts: files mymachines resolve [!UNAVAIL=return] dns myhostname
And it turns out dirmngr fails to parse the negation statement (the
bang in !UNAVAIL). This results in gnupg not being able to resolve
any name.
Looking at dirmngr/dns.c it was unclear to me how to properly handle
such negations. The dns_anyconf_scan calls used in
dns_nssconf_loadfile do not allow to store a negation bit easily...
In the meantime, I wrote the attached patch which ignores those
statements altogether. It makes libdns work as expected for us.
Commit log written by wk
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* dirmngr/dns.c (dns_rrtype): Ignore -Wstrict-prototypes warning.
Signed-off-by: Werner Koch <[email protected]>
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* dirmngr/dns.c (EPROTO) ![EPROTO]: Define to EPROTONOSUPPORT.
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This is the same replacement we use in Libassuan
(commit 8ab3b9273524bd344bdb90dd5d3bc8e5f53ead6e) to make it work on
OpenBSD and may other BSD based OSes.
Signed-off-by: Werner Koch <[email protected]>
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* dirmngr/dns.c (FD_SETSIZE): Bump up to 1024.
(dns_poll): Return an error instead of hitting an assertion failure.
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For unknown reasons socket() return fd with values 244, 252, 268. The
latter is above the FD_SETSIZE of 256. It seems that select has been
build with a highler FD_SETSIZE limit. Bump up to a reasonable large
value.
A better solution would be to grab some code from npth_eselect to
replace select. We could also use npth_eselect direclty in
dns-stuff.c instead of using dns_res_poll.
Signed-off-by: Werner Koch <[email protected]>
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* dirmngr/dns.c: New file.
* dirmngr/dns.h: New file.
* dirmngr/Makefile.am (dirmngr_SOURCES): Add new files.
* dirmngr/dns-stuff.c: Include dns.h.xxx use libdns
(libdns): New global var for the libdns state.
(libdns_error_to_gpg_error): New.
(libdns_init): New.
(resolve_name_libdns): New.
(get_dns_cert_libdns): New stub.
(getsrv_libdns): New stub.
(get_dns_cname_libdns): New stub.
Signed-off-by: Justus Winter <[email protected]>
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