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* dirmngr: Avoid endless loop in case of HTTP error 503.Werner Koch2019-07-031-10/+33
| | | | | | | | | | | | | | | | | | * dirmngr/ks-engine-hkp.c (SEND_REQUEST_EXTRA_RETRIES): New. (handle_send_request_error): Use it for 503 and 504. (ks_hkp_search, ks_hkp_get, ks_hkp_put): Pass a new var for extra_tries. -- This is a pretty stupid fix but one which works without much risk of regressions. We could have used the existing TRIES but in that case the fallback to other host would have been too limited. With the used value we can have several fallbacks to other hosts. Note that the TRIES is still cumulative and not per host. GnuPG-bug-id: 4600 Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 8b113bb148f273524682252233b3c65954e1419e)
* dirmngr: Do not rewrite the redirection for the "openpgpkey" subdomain.Werner Koch2019-07-031-0/+20
| | | | | | | | | | * dirmngr/http.c (same_host_p): Consider certain subdomains to be the same. -- GnuPG-bug-id: 4603 Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 37f0c55c7be3fc4912237f2bc72466aef6f8aa36)
* dirmngr: Fix previous commitWerner Koch2019-07-031-1/+1
| | | | | | | | -- Ooops, forgot to commit the actual backport part. GnuPG-bug-id: 4590 Fixes-commit: 458973f502b9a43ecf29e804a2c0c86e78f5927a
* dirmngr: Support the new WKD draft with the openpgpkey subdomain.Werner Koch2019-07-031-8/+56
| | | | | | | | | * dirmngr/server.c (proc_wkd_get): Implement new openpgpkey subdomain method. -- Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 914fa3be22bf8848a97a7dd405a040d6ef31e2fd)
* dirmngr: Allow for other hash algorithms than SHA-1 in OCSP.Werner Koch2019-05-281-25/+80
| | | | | | | | | | | | * dirmngr/ocsp.c (do_ocsp_request): Remove arg md. Add args r_sigval, r_produced_at, and r_md. Get the hash algo from the signature and create the context here. (check_signature): Allow any hash algo. Print a diagnostic if the signature does not verify. -- GnuPG-bug-id: 3966 Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Add a CSRF expection for pm.meWerner Koch2019-05-091-1/+2
| | | | | | -- Also comment typo fix.
* dirmngr: Improve domaininfo cache update algorithm.Werner Koch2019-04-021-19/+106
| | | | | | | | | | | | | | | | | * dirmngr/domaininfo.c (struct domaininfo_s): Add field keepmark. (insert_or_update): Implement new update algorithm. -- The old algorithm limited the length of a bucket chain by purging the last 50% or the entries. Thus the first domains entered into the cache were never purged. The new algorithm is a bit better: It also limits the chain length on overflow to 50% but tries to keep the entries indicating that a WKD is available in the cache. If there is still space to keep more, those which clearly do not support WKD are also kept. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Better error code for http status 413.Werner Koch2019-04-023-0/+12
| | | | | | | | | * dirmngr/ks-engine-hkp.c (send_request): New case for 413. * dirmngr/ks-engine-http.c (ks_http_fetch): Ditto. * dirmngr/ocsp.c (do_ocsp_request): Ditto. -- Signed-off-by: Werner Koch <[email protected]>
* libdns: Don't use _[A-Z] which are reserved names.NIIBE Yutaka2019-03-251-40/+40
| | | | | | | | | | * dirmngr/dns.c: Use the identifiers of "*_instance" instead of reserved "_[A-Z]". -- GnuPG-bug-id: 4420 Signed-off-by: NIIBE Yutaka <[email protected]>
* libdns: Avoid using compound literals (8).NIIBE Yutaka2019-03-071-20/+0
| | | | | | | | | | | | | | * dirmngr/dns.h (dns_quietinit): Remove. (dns_hints_i_new): Remove. -- Even before our change, dns_quietinit was questionable macro; There was no place in dns.c which requires overrides in initializer list. Only redundant zero were. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit 371ae25f8f6f2d1ac030bf984bca479393a5ed43)
* libdns: Avoid using compound literals (7).NIIBE Yutaka2019-03-073-12/+16
| | | | | | | | | | | | | | | | | * dirmngr/dns.h (DNS_OPTS_INIT, dns_opts): Remove. * dirmngr/dns-stuff.c (libdns_res_open): Use zero-ed, and initialized automatic variable for opts. * dirmngr/dns.c (send_query, resolve_query, resolve_addrinfo): Likewise. -- In fact, DNS_OPTS_INIT was only needed when args are none. With partially specified initialization, C99 guarantees zero-ed other members just like static object. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit d661acd483236d34720a4959fc816d05f89c2cb7)
* libdns: Avoid using compound literals (6).NIIBE Yutaka2019-03-073-33/+51
| | | | | | | | | | | | | | * dirmngr/dns.h (dns_rr_i_new): Remove. (dns_rr_i_init): Remove unused second argument. * dirmngr/dns.c (dns_p_dump, dns_hints_query, print_packet) (parse_packet): Use automatic variable for struct dns_rr_i. (dns_d_cname): No need to call dns_rr_i_init after memset 0. (dns_rr_i_init): Remove unused second argument. Return nothing. * dirmngr/dns-stuff.c (resolve_addr_libdns, get_dns_cert_libdns) (getsrv_libdns): Follow the change of dns_rr_i_init. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit 6501e59d3685bb58753c9caea729a4b0eca3942a)
* libdns: Avoid using compound literals (5).NIIBE Yutaka2019-03-072-2/+3
| | | | | | | | | | | | | | | | * dirmngr/dns.h (dns_rr_foreach): Don't use dns_rr_i_new. Call dns_rr_grep with NULL. * dirmngr/dns.c (dns_rr_grep): Support NULL for error_. -- Here we still use C99 feature of struct member initialization in dns_rr_foreach, for struct dns_rr_i. Note that in C99, it guarantees non-specified member fields are initialized by zero. So, there's no need to use dns_rr_i_new at all. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit a1ccfe2b37847cce0db2fb94a7365c9fa501eda4)
* libdns: Avoid using compound literals (4).NIIBE Yutaka2019-03-072-7/+6
| | | | | | | | | | * dirmngr/dns.h (dns_d_new*): Remove. * dirmngr/dns.c (parse_packet): Use dns_d_init with automatic variable. (parse_domain): Likewise. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit 7313a112f9c7ada61d24285313d2e2d069a672e8)
* libdns: Avoid using compound literals (3).NIIBE Yutaka2019-03-072-12/+18
| | | | | | | | | | | | | | | | * dirmngr/dns.h (dns_p_new): Remove. * dirmngr/dns.c (dns_hosts_query): Use dns_p_init with automatic variable. (dns_hints_query, dns_res_glue, parse_packet, query_hosts) (send_query, show_hints, echo_port): Likewise. -- Implicit automatic allocation by compound literals is confusing for C90 code. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit 72efb7840258808cd892b90d871ea1cc1c31d7f5)
* libdns: Avoid using compound literals (2).NIIBE Yutaka2019-03-072-19/+12
| | | | | | | | | | | | | * dirmngr/dns.h (dns_strsection1, dns_strsection3): Remove. (dns_strclass1, dns_strclass3): Remove. (dns_strtype1, dns_strtype3): Remove. (dns_strsection, dns_strclass, dns_strtype): Directly use the function. * dirmngr/dns.c (dns_strsection): Use automatic variable. (dns_strclass, dns_strtype): Likewise. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit 455ef62d29a112de05897139716265d07e4c6ae3)
* libdns: Avoid using compound literals.NIIBE Yutaka2019-03-071-5/+10
| | | | | | | | | | | | | | | | * dirmngr/dns.c (dns_inet_pton, dns_so_tcp_keep): Use automatic variables. (dns_poll, dns_send_nopipe): Likewise, adding const qualifier. -- Compound literals is a feature of C99. Because we only use C90 plus some limited features, in the project, it's better to avoid it. Besides, we make sure when it's read-only. Signed-off-by: NIIBE Yutaka <[email protected]> (cherry picked from commit 1c405499388fd5bed0968ab5c6c5d1b3373537b9)
* dirmngr: Add CSRF protection exception for protonmail.Werner Koch2019-03-071-5/+40
| | | | | | | | | | | * dirmngr/http.c (same_host_p): Add exception table. -- Please: Adding entries to this table shall be an exception and not the rule. Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 134c3c16523b1a267ebdd2df6339240fd9e1e3b3)
* dirmngr: Fix initialization of assuan's nPth hook.NIIBE Yutaka2019-02-061-1/+1
| | | | | | | | | | | | * dirmngr/dirmngr.c (main): Move assuan_set_system_hooks to... (thread_init): ... here. -- Cherry picked master commit of: 1f8817475f59ede3f28f57edc10ba56bbdd08b49 Signed-off-by: NIIBE Yutaka <[email protected]>
* Silence compiler warnings new with gcc 8.Werner Koch2018-12-181-5/+12
| | | | | | | | | | | | * dirmngr/dns.c: Include gpgrt.h. Silence -Warray-bounds also gcc. * tests/gpgscm/scheme.c: Include gpgrt.h. (Eval_Cycle): Ignore -Wimplicit-fallthrough. -- The funny use of case and labels in the CASE macro seems confuse the fallthrough detection. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Retry another server from the pool on 502, 503, 504.Werner Koch2018-12-111-7/+33
| | | | | | | | | | | | | | * dirmngr/ks-engine-hkp.c (handle_send_request_error): Add arg http_status and handle it. (ks_hkp_search): Get http_status froms end_request and pass on to handle_send_request_error. (ks_hkp_get): Ditto. (ks_hkp_put): Ditto. -- GnuPG-bug-id: 4175 Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 05ef6282784495a77f4faf76c0de5bc85dfecf06)
* dirmngr: New function http_status2string.Werner Koch2018-12-112-0/+26
| | | | | | | | | | * dirmngr/http.c (http_status2string): New. -- Right now only the standard 5xx codes. Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit dc61f4ecea5c9815cb00aeb25439978337c1fd64)
* dirmngr: Avoid possible CSRF attacks via http redirects.Werner Koch2018-11-237-95/+435
| | | | | | | | | | | | | | | | | | | | | * dirmngr/http.h (parsed_uri_s): Add fields off_host and off_path. (http_redir_info_t): New. * dirmngr/http.c (do_parse_uri): Set new fields. (same_host_p): New. (http_prepare_redirect): New. * dirmngr/t-http-basic.c: New test. * dirmngr/ks-engine-hkp.c (send_request): Use http_prepare_redirect instead of the open code. * dirmngr/ks-engine-http.c (ks_http_fetch): Ditto. -- With this change a http query will not follow a redirect unless the Location header gives the same host. If the host is different only the host and port is taken from the Location header and the original path and query parts are kept. Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit fa1b1eaa4241ff3f0634c8bdf8591cbc7c464144)
* dirmngr: Add FLUSHCRLs commandAndre Heinecke2018-11-122-1/+18
| | | | | | | | | | | | | | | | | Summary: * dirmngr/crlcache.c (crl_cache_flush): Also deinit the cache. * dirmngr/server.c (hlp_flushcrls, cmd_flushcrls): New. (register_commands): Add FLUSHCRLS. -- This allows it to flush the CRL cache of a running dirmngr server. This can be useful to debug / analyze CRL issues. GnuPG-Bug-Id: T3967 Differential Revision: https://dev.gnupg.org/D469 Signed-off-by: Andre Heinecke <[email protected]>
* dirmngr: In verbose mode print the OCSP responder id.Werner Koch2018-11-051-0/+27
| | | | | | | * dirmngr/ocsp.c (ocsp_isvalid): Print the responder id. Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 0a7f446c189201ca6e527af08b44da756b343209)
* dirmngr: Emit SOURCE status also on NO_DATA.Werner Koch2018-11-051-2/+10
| | | | | | | | | | | | | | | | * 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 <[email protected]> (cherry picked from commit bee65edfbc8cc2c369e5941cc9d1a01a0519b388)
* dirmngr: Fix LDAP port parsing.Werner Koch2018-11-051-1/+1
| | | | | | | | | | | * dirmngr/misc.c (host_and_port_from_url): Fix bad port parsing and a segv for a missing slash after the host name. -- Reportted-by: Tomas Mraz GnuPG-bug-id: 4230 Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit a3a5a2451924640588e5ecc03a1d4ba6a6ba94a5)
* dirmngr: Fix out of scope use of a var in the keyserver LDAP code.Werner Koch2018-10-251-23/+10
| | | | | | | | | | * dirmngr/ks-engine-ldap.c (extract_attributes): Don't use a variabale out of scope and cleanup the entire pgpKeySize block. -- GnuPG-bug-id: 4229 Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 2b57a8159cdc3b212a4efc68787b40cafcd91ebe)
* dirmngr: Only print info for no ldapserver fileAndre Heinecke2018-10-241-1/+5
| | | | | | | | | * dirmngr/dirmngr.c (parse_ldapserver_file): Only print info for ENOENT. -- It is very common that there is no ldapserver file. In that case users are confused by an error printed at dirmngr startup.
* dirmngr: Prepare for updated WKD specs with ?l= paramWerner Koch2018-10-221-12/+21
| | | | | | | | | | | | | | | | | | * dirmngr/server.c (proc_wkd_get): Tack the raw local address to the request. -- We append the raw non-canonicalized local address part to the hash. Servers who serve the requests from static files will ignore the parameters and a test with posteo shows that also services using a database ignore the parameter. The general idea is that service providers may use their own canonicalization rules. The problem is that we currently filter the returned key for the full mail address and thus we will never see a key if the service did a different canonicalization than we. So consider this to be an experiment. Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 256a280c51f9ea862e4bfb0bb530c2a96f9088f9)
* assuan: Fix exponential decay for first second.Werner Koch2018-08-281-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | * common/asshelp.c (wait_for_sock): Round SECSLEFT. * dirmngr/dirmngr.c (main): Take care of --debug-wait also in dameon mode. * common/sysutils.c (gnupg_usleep) [HAVE_NANOSLEEP]: Fix nanosleep use. -- Without the rounding we saw in verbose mose [...]to come up ... (5s) [...]to come up ... (4s) immediately without the expected one second delay. Waiting for the next seconds did not work if nanosleep was used due to improper passed parameters in gnupg_usleep. Adding --debug-wait for dirmngr in daemon mode is required to test this change. GnuPG-bug-id: 3490 Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit 0cfdd3b57d592fb6baa7dafe8fde124e8a6c7798) Fixes-commit: 1189df2cd7d4b6896ba22aa204c159ff2a425ead Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Validate SRV records in WKD queries.Werner Koch2018-07-291-0/+12
| | | | | | | | | | | | | * dirmngr/server.c (proc_wkd_get): Check the returned SRV record names to mitigate rogue DNS servers. -- I am not sure wether this really is very useful because the security relies on a trustworthy DNS system anyway. However, that check is easy enough to do. Signed-off-by: Werner Koch <[email protected]> (cherry picked from commit ebe727ef596eefebb5eff7d03a98649ffc7ae3ee)
* libdns: For SOCKS connection, just fails.NIIBE Yutaka2018-07-021-1/+1
| | | | | | | | | | | | | | | | * dirmngr/dns.c (dns_res_exec): If it's DNS_SO_SOCKS_CONN, don't iterate to other server, but return the error immediately. -- Cherry picked from master commit: 1aacd12471935a354cfd85ee1805edc7eb16e6c5 In the function libdns_switch_port_p in dns-stuff.c, this patch allows to fallback using TOR_PORT2 correctly. Fixes-commit: bcdbf8b8ebe9d61160e0b007dabe1b6462ffbc93 Signed-off-by: NIIBE Yutaka <[email protected]>
* libdns: Let kernel to decide the local port.NIIBE Yutaka2018-06-201-0/+3
| | | | | | | | | | | | | | | | | | | | | | * dirmngr/dns.c (LEAVE_SELECTION_OF_PORT_TO_KERNEL): New. (dns_socket): Don't select ephemeral port in user space. -- Cherry picked from master commit: 861f1da0731bf29dcb9221c4f22c76b40ec15a78 There is no good reason to bind local port aggressively. It might be some reason to do so, then, a user can specify it in /etc/resolv.conf by the second argument of "interface" directive. At least, it causes a problem on Windows. Binding a specified port in user space can trigger the Firewall dialog on Windows. Since it can be considered valid question, it is better not to bind with an ephemeral port which is selected in user space, by default. GnuPG-bug-id: 3610 Signed-off-by: NIIBE Yutaka <[email protected]>
* libdns: Fix for non-FQDN hostname.NIIBE Yutaka2018-06-181-5/+8
| | | | | | | | | | | | | * dirmngr/dns.c (dns_resconf_open): Clear search[0] for non-FQDN hostname. -- Cherry pick from master commit: a4a054bf14fa855715faee01a152755c4e2a74f7 GnuPG-bug-id: T3803 Signed-off-by: NIIBE Yutaka <[email protected]>
* libdns: Fix connect and try next nameserver when ECONNREFUSED.NIIBE Yutaka2018-06-181-2/+23
| | | | | | | | | | | | | | | * dirmngr/dns.c (dns_so_check): When EINVAL, release the association by connect with AF_UNSPEC and try again. Also try again for ECONNREFUSED. (dns_res_exec): Try next nameserver when ECONNREFUSED. -- Cherry pick from master commit: bcdbf8b8ebe9d61160e0b007dabe1b6462ffbc93 GnuPG-bug-id: T3374 Signed-off-by: NIIBE Yutaka <[email protected]>
* libdns: Clear struct sockaddr_storage by zero.NIIBE Yutaka2018-06-181-0/+4
| | | | | | | | | | | | | | | | | * dirmngr/dns.c (dns_resconf_pton): Clear SS. (dns_resconf_setiface): Clear ->IFACE. (dns_hints_root, send_query): Clear SS. -- Cherry pick from master commit: 1c0b6681e4f322b88ac35d1f21c03d3cfc35fc23 POSIX requires clear the structure of struct sockaddr_in6. On macOS, in some case like bind, it is better to clear even for struct sockaddr_in. Signed-off-by: NIIBE Yutaka <[email protected]>
* libdns: Sync to upstream.NIIBE Yutaka2018-06-181-10/+2
| | | | | | | | | | | | | | | * dirmngr/dns.c (dns_nssconf_loadfile): Handle exclamation mark. -- Cherry pick from master commit: 3e6ad302eaf3a4a9f3e60379133b3dfdbe0e1b2d Reverting local change, merge upstream's debug-tracing branch. (commit 21281fc1b63bb74d51762b8e363c49b1a258783d) Fixes-commit: d4c0187dd93163f12e9f953366adef81ecf526a6 Signed-off-by: NIIBE Yutaka <[email protected]>
* dirmngr: Fix recursive resolver mode.NIIBE Yutaka2018-06-181-0/+2
| | | | | | | | | | | | | | | | | | * dirmngr/dns-stuff.c (libdns_init): Initialize options.recurse. -- Cherry pick from master commit: 5b40338f12762cd74238c2d2b3101c33dd2d0ed3 To reproduce an error, run: ./t-dns-stuff --debug --recursive-resolver www.gnupg.org Then, it returns "No name" error. That's because there was only setup for root servers, and no setup for recursive query in fact. Signed-off-by: NIIBE Yutaka <[email protected]>
* dirmngr: Implement timeout for dirmngr_ldap under Windows.Werner Koch2018-05-021-4/+44
| | | | | | | | | * dirmngr/dirmngr_ldap.c (alarm_thread) [W32]: New. (set_timeout): Implement for W32. -- GnuPG-bug-id: 3937 Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Sleep in the ldap wrapper thread.Werner Koch2018-04-301-212/+311
| | | | | | | | * dirmngr/ldap-wrapper.c (wrapper_list): Rename to reaper_list. (ldap_reaper_thread): Protect all list modification with a mutex. Use a condition var to wake up the reaper thread. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Use the LDAP wrapper process also for Windows.Werner Koch2018-04-272-186/+237
| | | | | | | | | | | | | | | | * dirmngr/ldap-wrapper.c: Revamp module to make use of es_poll for portability. * configure.ac: Always use the ldap wrapper. -- Since the migration from GNU Pth to nPth the ldap wrapper never worked reliable on Windows. Our long term use of the old Window CE wrapper thing didn't fixed this either. The new code uses the portable es_poll function and thus code which is tested at several other places. It Should(tm) fix the Windows issues. GnuPG-bug-id: 3937 Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Silence log output from dirmngr_ldap.Werner Koch2018-04-273-5/+13
| | | | | | | | | | | | | | | * dirmngr/dirmngr_ldap.c: Remove assert.h. (main): Replace assert by log_assert. * dirmngr/ldap.c (run_ldap_wrapper): Use debug options to pass verbose options to dirmngr_ldap. (start_cert_fetch_ldap): Ditto. -- verbose is a pretty common option in dirmngr.conf and it would clutter the logs with output from dirmngr_ldap. Now we require DBG_EXTPROG or DBG_LOOKUP to make dirmngr_ldap more verbose. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Lower the dead host resurrection time to 1.5hWerner Koch2018-04-261-2/+2
| | | | | | | | * 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 <[email protected]>
* dirmngr: Fix handling of CNAMEed keyserver pools.Werner Koch2018-04-262-1/+33
| | | | | | | | | | | | * 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 <[email protected]>
* dirmngr: Add the used TLS library to the debug output.Werner Koch2018-04-251-1/+11
| | | | | | | | | | | * dirmngr/http.c (send_request): Print the used TLS library in debug mode. -- We allow two different TLS libararies and thus it is useful to see that in the debug output of bug reports. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Allow redirection from https to http for CRLsWerner Koch2018-04-255-21/+40
| | | | | | | | | | | | | | | | | * dirmngr/ks-engine.h (KS_HTTP_FETCH_NOCACHE): New flag. (KS_HTTP_FETCH_TRUST_CFG): Ditto. (KS_HTTP_FETCH_NO_CRL): Ditto. (KS_HTTP_FETCH_ALLOW_DOWNGRADE): Ditto. * dirmngr/ks-engine-http.c (ks_http_fetch): Replace args send_no_cache and extra_http_trust_flags by a new flags arg. Allow redirectiong from https to http it KS_HTTP_FETCH_ALLOW_DOWNGRADE is set. * dirmngr/loadswdb.c (fetch_file): Call with KS_HTTP_FETCH_NOCACHE. * dirmngr/ks-action.c (ks_action_get): Ditto. (ks_action_fetch): Ditto. * dirmngr/crlfetch.c (crl_fetch): Call with the appropriate flags. -- Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Implement CRL fetching via https.Werner Koch2018-04-2510-131/+133
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | * dirmngr/http.h (HTTP_FLAG_TRUST_CFG): New flag. * dirmngr/http.c (http_register_cfg_ca): New. (http_session_new) [HTTP_USE_GNUTLS]: Implement new trust flag. * dirmngr/certcache.c (load_certs_from_dir): Call new function. (cert_cache_deinit): Ditto. * dirmngr/http-ntbtls.c (gnupg_http_tls_verify_cb): Ditto. * dirmngr/ks-engine-http.c (ks_http_fetch): Add new args 'send_no_cache' and 'extra_http_trust_flags'. Change all callers to provide the default value. * dirmngr/crlfetch.c (crl_fetch): Rewrite to make use of ks_http_fetch. -- The old code simply did not use https for downloading of CRLS. Instead it rewrote https to http under the assumption that the CRL service was also available without encryption. Note that a CRL is self-standing and thus it does not need to have extra authenticity as provided by TLS. These days we should not use any unencrypted content and thus this patch. Be aware that cacert.org give a https CRL DP but that currently redirects to to http! This is a downgrade attack which we detect and don't allow. The outcome is that it is right now not possible to use CAcert certificates. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: Fallback to CRL if no default OCSP responder is configured.Werner Koch2018-04-241-23/+42
| | | | | | | | | * dirmngr/server.c (cmd_isvalid): Use option second arg to trigger OCSP checkibng. Fallback to CRL if no default OCSP responder has been configured. * sm/call-dirmngr.c (gpgsm_dirmngr_isvalid): Adjust accordingly. Signed-off-by: Werner Koch <[email protected]>
* dirmngr: More binary I/O on Windows for CRLsAndre Heinecke2018-04-201-2/+5
| | | | | | | | | | | | | | | | * dirmngr/crlcache.c (lock_db_file, crl_cache_insert): Open cache file in binary mode. -- CRLs on Windows would have line ending entries converted. This did not cause problems in a surprising amount of cases but can lead to unexpected and random parse / read errors. Especially with large CRLs like cacert. This bug has been around since 2004. GnuPG-Bug-Id: T3923 Signed-off-by: Andre Heinecke <[email protected]>
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