* dirmngr/ks-engine-hkp.c (ks_hkp_search): Send SOURCE status also on
NO DATA error.
(ks_hkp_get): Ditto.
* g10/call-dirmngr.c (gpg_dirmngr_ks_search): Print "data source" info
also on error.
(gpg_dirmngr_ks_get): Ditto.
--
If a keyserver does not return any data it can be useful to know which
keyserver out of the pool answered.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (select_random_host): Use atomic pass
through the host table instead of risking out-of-bounds write.
--
Multiple threads may write to hosttable[x]->dead while
select_random_host() is running. For example, a housekeeping thread
might clear the ->dead bit on some entries, or another connection to
dirmngr might manually mark a host as alive.
If one or more hosts are resurrected between the two loops over a
given table in select_random_host(), then the allocation of tbl might
not be large enough, resulting in a write past the end of tbl on the
second loop.
This change collapses the two loops into a single loop to avoid this
discrepancy: each host's "dead" bit is now only checked once.
As Werner points out, this isn't currently strictly necessary, since
npth will not switch threads unless a blocking system call is made,
and no blocking system call is made in these two loops.
However, in a subsequent change in this series, we will call a
function in this loop, and that function may sometimes write(2), or
call other functions, which may themselves block. Keeping this as a
single-pass loop avoids the need to keep track of what might block and
what might not.
GnuPG-bug-id: 2836
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
* dirmngr/dirmngr-status.h: New.
* dirmngr/dirmngr.h: Include dirmngr-status.h and move some prototypes
to that file.
* dirmngr/t-support.c: New.
* dirmngr/Makefile.am (dirmngr_SOURCES): Add dirmngr-status.h.
(t_common_src): Add t-support.c.
* dirmngr/server.c (dirmngr_status_printf): Bypass if CTRL is NULL.
* dirmngr/dns-stuff.c: Include dirmngr-status.h.
(libdns_init): Print WARNING status line. Change call callers to take
and pass a CTRL argument.
* g10/call-dirmngr.c (ks_status_cb): Print info for new WARNING
status.
--
To test this you can change RESOLV_CONF_NAME in dns-stuff.c and run
gpg --recv-key -v SOMETHING.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (RESURRECT_INTERVAL): Decrease.
(INITIAL_HOSTTABLE_SIZE): Increase because the old values was likely
for development.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (map_host): Don't use the cname for HTTPHOST.
* dirmngr/server.c (make_keyserver_item): Map keys.gnupg.net.
--
For a description of the problem see the comment in
make_keyserver_item.
GnuPG-bug-id: 3755
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (handle_send_request_error): Handle two more
error codes.
--
Handle the two possible connect failures related to missing IPv6 support
gracefully by marking the host dead and retrying with another one.
If IPv6 is disabled via procfs, connect() will return EADDRNOTAVAIL.
If IPv6 is not compiled into the kernel, it will return EAFNOSUPPORT.
This makes it possible to use dual-stack hkp servers on hosts not having
IPv6 without random connection failures.
GnuPG-bug-id: 3331
--
The above description seems to be for Linux, so it is possible that
other systems might behave different. However, it is worth to try
this patch.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (enum ks_protocol): New type.
(struct hostinfo_s): New flags indicating whether we already did a
A lookup, or a SRV lookup per protocol. Turn 'port' into an array.
(create_new_hostinfo): Initialize new fields.
(add_host): Update the port for the given protocol.
(map_host): Simplify hosttable lookup misses. Check the SRV records
for both protocols on demand, do the A lookup just once. Return the
correct port.
--
Previously, if a host had both a SRV record for hkp and hkps, the
wrong port was used for the protocol that was used second, because the
hostinfo did not store a port per protocol, and the hosttable does not
discriminate between hosts using the protocol.
Fix this by querying the SRV records on demand, storing a port per
protocol, and returning the right port.
GnuPG-bug-id: 3033
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/ks-engine-hkp.c (struct hostinfo_s): Add explicit length and
size fields.
(MAX_POOL_SIZE): New macro.
(create_new_hostinfo): Initialize new fields.
(host_in_pool_p): Adapt.
(select_random_host): Likewise.
(add_host): Likewise. Move the resizing logic here.
(hostinfo_sort_pool): New function.
(map_host): Simplify. Move the resizing logic away from here.
(ks_hkp_mark_host): Adapt.
(ks_hkp_print_hosttable): Likewise.
--
The current code assumes that the pool array is only filled when the
hostinfo object is created. This patch removes that limitation.
GnuPG-bug-id: 3033
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/dirmngr.c (oConnectTimeout, oConnectQuickTimeout): New
enums.
(opts): New options --connect-timeout and --connect-quick-timeout.
(DEFAULT_CONNECT_TIMEOUT): New.
(DEFAULT_CONNECT_QUICK_TIMEOUT): New.
(parse_rereadable_options): Handle new options.
(post_option_parsing): New. Use instead of direct calls to
set_debug() and set_tor_mode ().
(main): Setup default timeouts.
(dirmngr_init_default_ctrl): Set standard connect timeout.
* dirmngr/dirmngr.h (opt): New fields connect_timeout and
connect_quick_timeout.
(server_control_s): New field timeout.
* dirmngr/ks-engine-finger.c (ks_finger_fetch): Pass timeout to
http_raw_connect.
* dirmngr/ks-engine-hkp.c (send_request): Call
http_session_set_timeout.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/server.c (cmd_wkd_get, cmd_ks_search, cmd_ks_get)
(cmd_ks_fetch): Implement --quick option.
--
The standard connect timeouts are way to long so we add a timeout to
the connect calls. Also implement the --quick option which is already
used by gpg for non-important requests (e.g. looking up a key for
verification).
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dirmngr.h (struct opt): Add field 'disable_ipv6'.
* dirmngr/dirmngr.c (oDisableIPv6): New const.
(opts): New option --disable-ipv6.
(parse_rereadable_options): Set that option.
* dirmngr/dns-stuff.c (opt_disable_ipv6): New var.
(set_dns_disable_ipv6): New.
(resolve_name_standard): Make use of it.
* dirmngr/ks-engine-finger.c (ks_finger_fetch): Take care of
OPT.DISABLE_IPV6.
* dirmngr/ks-engine-hkp.c (map_host): Ditto.
(send_request): Ditto.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/ocsp.c (do_ocsp_request): Ditto.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dirmngr.h (server_control_s): New flag 'http_no_crl'.
* dirmngr/dirmngr.c (dirmngr_init_default_ctrl): Set this flag.
* dirmngr/server.c (option_handler): New option "http-crl"
* dirmngr/http.h (HTTP_FLAG_NO_CRL): New flag.
* dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Consult this flag.
* dirmngr/ks-engine-hkp.c (send_request): Set flag depending on CTRL.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (main): New option --no-crl.
--
This new option can be used to enable CRL checks on a per session
base. The default is not to use CRLs for https connections.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http-ntbtls.c: New.
* dirmngr/Makefile.am (dirmngr_SOURCES): Add file.
* dirmngr/dirmngr.h (SERVER_CONTROL_MAGIC): New.
(server_conrol_s): Add field 'magic',
* dirmngr/dirmngr.c (dirmngr_init_default_ctrl): Set MAGIC.
(dirmngr_deinit_default_ctrl): Set MAGIC to deadbeef.
* dirmngr/http.c (my_ntbtls_verify_cb): New.
(http_session_new) [HTTP_USE_NTBTLS]: Remove all CA setting code.
(send_request) [HTTP_USE_NTBTLS]: Set the verify callback. Do not call
the verify callback after the handshake.
* dirmngr/ks-engine-hkp.c (send_request): Pass
gnupg_http_tls_verify_cb to http_session_new.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (my_http_tls_verify_cb): New.
(main): Rename option --gnutls-debug to --tls-debug.
(main) [HTTP_USE_NTBTLS]: Create a session.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (hostinfo_s): Remove fields v4addr and
v5addr and add fields iporname and iporname_valid.
(create_new_hostinfo): Clear them.
(add_host): Remove the code to set the v4addr and v6addr fields.
(ks_hkp_print_hosttable): Remove printing of the fields. Compute the
iporname field and display it.
(ks_hkp_reload): Force re-computing of the iporname field in
ks_hkp_print_hosttable.
--
GnuPG-bug-id: 2928
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dns-stuff.c (disable_dns_tormode): New.
* dirmngr/dirmngr.c (oNoUseTor): New const.
(opts): New option --no-use-tor.
(tor_mode): New var.
(parse_rereadable_options): Change to use TOR_MODE.
(dirmngr_use_tor): New.
(set_tor_mode): Call disable_dns_tormode. Implement oNoUseTor.
* dirmngr/dirmngr.h (opt): Remove field 'use_tor'. Replace all
references by a call to dirmngr_use_tor().
* dirmngr/server.c (cmd_getinfo): Distinguish between default and
enforced TOR_MODE.
--
This patch replaces the global variable opt.use_tar by a function
testing a file local mode flag. This patch prepares for a
use-tor-if-available mode.
GnuPG-bug-id: 2935
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (tor_not_running_p): New.
(map_host): Call that to print a warning.
(handle_send_request_error): Ditto and avoid marking the host dead.
Also print a tor_config_problem warning. Add arg CTRL; adjust callers
to pass that new arg.
* g10/call-dirmngr.c (ks_status_cb): Detect and print the new
warnings.
Signed-off-by: Werner Koch <wk@gnupg.org>
* common/logging.c (do_logv): Remove extra parentheses in comparison.
* dirmngr/dns-stuff.c (resolve_addr_libdns): Init RES so that
dns_res_close is given a defined value in the error case.
* dirmngr/http.c (cookie_read, cookie_write) [HTTP_USE_NTBTLS]: Fix
format string char.
* dirmngr/ks-engine-hkp.c (ks_hkp_help): Remove duplicate "const".
* dirmngr/ks-engine-http.c (ks_http_help): Ditto.
* dirmngr/ks-engine-kdns.c (ks_kdns_help): Ditto.
* dirmngr/ks-engine-ldap.c (ks_ldap_help): Ditto.
* scd/app-p15.c (send_keypairinfo, do_getattr): Fix format string
char.
* tools/gpgconf-comp.c (gpg_agent_runtime_change): Init PID for the
error case.
(scdaemon_runtime_change): Ditto.
(dirmngr_runtime_change): Ditto.
* tools/gpgconf.c (query_swdb): Init VALUE_SIZE_UL.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dns-stuff.c (is_ip_address): Make the return value depend on
the address family.
* dirmngr/ks-engine-hkp.c (map_host): Rename arg R_POOLNAME to
R_HTTPHOST because that is its purpose. Note that the former
behaviour of storing a NULL to indicate that it is not a pool has not
been used.
(make_host_part): Ditto.
(make_host_part): Make sure that literal v6 addresses are correclty
marked in the constructed URL.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (map_host): Chnage arg NO_SRV to SRVTAG.
(make_host_part): Rewrite.
--
This fixes a regression from 2.0 and 1.4 where these tags have been in
used since 2009. For whatever reason this was not ported to 2.1 and
"hkp" was always used.
GnuPG-bug-id: 2451
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http.h (parsed_uri_s): Add field EXPLICIT_PORT.
* dirmngr/http.c (do_parse_uri): That it.
* dirmngr/ks-engine-hkp.c (map_host): Add arg NO_SRV.
(make_host_part): Ditto.
(ks_hkp_resolve): Set NO_SRV from EXPLICIT_PORT.
(ks_hkp_search): Ditto.
(ks_hkp_get): Ditto.
(ks_hkp_put): Ditto.
--
This implements the behaviour of the keyserver helpers from 1.4 and
2.0.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dns-stuff.c (get_dns_srv): Add args SERVICE and PROTO.
* dirmngr/http.c (connect_server): Simplify SRV lookup.
* dirmngr/ks-engine-hkp.c (map_host): Ditto.
* dirmngr/t-dns-stuff.c (main): Adjust for changed get_dns_srv.
--
This new API is more convenient because it includes commonly used
code. Note that right now http.c's SRV record code is not used.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dns-stuff.c (opt_debug, opt_verbose): New vars.
(set_dns_verbose): New func.
(libdns_switch_port_p): Add debug output.
(resolve_dns_name): Ditto.
(get_dns_cert): Ditto.
(get_dns_cname): Ditto.
(getsrv_libdns, getsrv_standard): Change SRVCOUNT to an unsigend int.
(getsrv): Rename to ...
((get_dns_srv): this. Add arg R_COUNT and return an error. Add debug
output.
* dirmngr/http.c: Adjust for chnaged getsrv().
* dirmngr/ks-engine-hkp.c (map_host): Ditto.
* dirmngr/t-dns-stuff.c (main): Ditto. Call set_dns_verbose.
* dirmngr/dirmngr.c (parse_rereadable_options): Call set_dns_verbose.
--
Due to our switch to Libdns getsrv didn't worked correctly because it
returned -1 for an NXDOMAIN. However, it is perfectly okay to have no
SRV record and thus we change the way this function is called to be
aligned with the other functions and also map NXDOMAIN to a zero SRV
record count.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/dirmngr.c (oStandardResolver): New constant.
(opts): New option --standard-resolver.
(parse_rereadable_options): Set option.
* dirmngr/dns-stuff.c: Refactor all code to support the new option.
(standard_resolver): New var.
(enable_standard_resolver, standard_resolver_p): New func.
* dirmngr/http.c (connect_server): Remove USE_DNS_SRV build
conditional.
* dirmngr/ks-engine-hkp.c (map_host): Ditto.
* dirmngr/server.c (cmd_getinfo) <dnsinfo>: Take care of new option
* configure.ac (HAVE_ADNS_IF_TORMODE): Remove var ADNSLIB. ac_define
USE_ADNS in the adns checking code. Remove options --disable-dns-srv
and --disable-dns-cert. Always look for the system resolver. Print
warning if no system resolver was found.
(USE_DNS_CERT, USE_DNS_SRV): Remove ac_defines.
(HAVE_SYSTEM_RESOLVER): New ac_define.
(USE_DNS_SRV): Remove am_conditional; not used anyway.
--
This option allows for runtime switching to the system's standard
resolver. This is mainly useful to work around possible bugs in the
optional resolver libraries (as of now ADNS). Note that on Windows
there is no code to use systems's resolver and thus for full
functionality dirmngr must be build with a separate resolver.
This patch also does way with configure options to disable the use of
CERT and SRV records.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (ks_hkp_search): Prefix fingerprint with 0x.
--
pre-2.1 made sure that the 0x prefix was put before the fingerprint so
that the search command works. Actually --recv-key should be used
with a fingerprint but some users are using --search-key, probably to
use the interactive mode.
GnuPG-bug-id: 2412
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/http.h (HTTP_FLAG_TRUST_DEF, HTTP_FLAG_TRUST_SYS): New.
* dirmngr/http.c (http_session_new): Add arg "flags".
* dirmngr/ks-engine-hkp.c (send_request): Use new flag
HTTP_FLAG_TRUST_DEF for the new arg of http_session_new.
* dirmngr/ks-engine-http.c (ks_http_fetch): Ditto.
* dirmngr/t-http.c (main): Ditto.
--
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-engine-hkp.c (map_host): Fix setting of r_poolname.
--
map_host is intended to return the name of the pool as an additional
information. However this broke some time ago and a pool name was
only retrained if the pool name was retrieved from a DNS CNAME.
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/Makefile.am (dist_pkgdata_DATA): Add sks-keyservers.netCA.pem.
* dirmngr/http.c (http_session_new): Add optional arg
intended_hostname and set a default cert.
* dirmngr/ks-engine-hkp.c (send_request): Pass httphost to
http_session_new.
--
Ship the certificate for the sks-keyservers hkps pool. If the user
has specified that they want to use
hkps://hkps.pool.sks-keyservers.net, and they have not specified any
hkp-cacert explicitly, then initialize the trust path with this
specific trust anchor.
Co-authored-by: wk@gnupg.org
Signed-off-by: Werner Koch <wk@gnupg.org>
* dirmngr/ks-action.c (ks_action_search): Only retry if the keyserver
responded with a '404 Not Found'.
* dirmngr/ks-engine-hkp.c (send_request): Return http status code.
(ks_hkp_search): Likewise.
(ks_hkp_{get,put}): Adapt call to 'send_request'.
* dirmngr/ks-engine.h (ks_hkp_search): Update prototype.
Signed-off-by: Justus Winter <justus@g10code.com>
* dirmngr/ks-engine-hkp.c (struct hostinfo_s): New field 'port'.
(create_new_hostinfo): Initialize 'port'.
(add_host): Add host parameter and update the hosttable entry.
(map_host): Return port if known, adjust calls to 'add_host'.
(make_host_part): Let 'map_host' specify the port if known.
Signed-off-by: Justus Winter <justus@g10code.com>
