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2018-11-23dirmngr: Avoid possible CSRF attacks via http redirects.Werner Koch1-2/+2
* 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)
2017-07-26dirmngr: Do not use a blocking connect in Tor mode.Werner Koch1-0/+17
* dirmngr/http.c (http_raw_connect): Disable the timeout in Tor mode. (send_request): Ditto. Signed-off-by: Werner Koch <[email protected]>
2017-06-08dirmngr: Allow a timeout for HTTP and other TCP connects.Werner Koch1-0/+14
* dirmngr/http.c: Include fcntl.h. (http_session_s): Add field 'connect_timeout'. (http_session_new): Clear that. (http_session_set_timeout): New function. (my_wsagetlasterror) [W32]: New. (connect_with_timeout): New function. (connect_server): Add arg 'timeout' and call connect_with_timeout. (send_request): Add arg 'timeout' and pass it to connect_server. (http_raw_connect): Add arg 'timeout'. (http_open): Pass TIMEOUT from the session to connect_server. -- Note that the non-blocking connect we implement is traditional a pretty non-portable thing due to slighly different semantics. The code uses the strategy W. Richard Stevens suggested in 1998. Hopefully current OS versions got it all right. The code has not been tested on Windows. Signed-off-by: Werner Koch <[email protected]>
2017-04-14dirmngr: More fix for test program.NIIBE Yutaka1-0/+4
* dirmngr/t-http.c (main): Care about no TLS. Signed-off-by: NIIBE Yutaka <[email protected]>
2017-03-07Remove -I option to common.NIIBE Yutaka1-2/+2
* dirmngr/Makefile.am (AM_CPPFLAGS): Remove -I$(top_srcdir)/common. * g10/Makefile.am (AM_CPPFLAGS): Ditto. * g13/Makefile.am (AM_CPPFLAGS): Ditto. * kbx/Makefile.am (AM_CPPFLAGS): Ditto. * scd/Makefile.am (AM_CPPFLAGS): Ditto. * sm/Makefile.am (AM_CPPFLAGS): Ditto. * tools/Makefile.am (AM_CPPFLAGS): Ditto. * Throughout: Follow the change. Signed-off-by: NIIBE Yutaka <[email protected]>
2017-02-26dirmngr: Avoid warnings during non-ntbtls build.Daniel Kahn Gillmor1-1/+2
* dirmngr/t-http.c (my_http_tls_verify_cb): Avoid warnings when not using ntbtls. -- Without this patch, when building without ntbtls, we see the following warnings during "make check": t-http.c: In function ‘my_http_tls_verify_cb’: t-http.c:141:16: warning: implicit declaration of function ‘ntbtls_x509_get_peer_cert’ [-Wimplicit-function-declaration] (cert = ntbtls_x509_get_peer_cert (tls_context, idx)); idx++) ^~~~~~~~~~~~~~~~~~~~~~~~~ t-http.c:141:14: warning: assignment makes pointer from integer without a cast -Wint-conversion] (cert = ntbtls_x509_get_peer_cert (tls_context, idx)); idx++) ^ At top level: t-http.c:123:1: warning: ‘my_http_tls_verify_cb’ defined but not used [-Wunused-function] my_http_tls_verify_cb (void *opaque, ^~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Daniel Kahn Gillmor <[email protected]>
2017-02-21dirmngr: New Assuan option "http-crl".Werner Koch1-3/+15
* 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 <[email protected]>
2017-02-21dirmngr: Add a magic field to the http structs.Werner Koch1-1/+1
* dirmngr/http.c (HTTP_SESSION_MAGIC): New. (http_session_s): New field 'magic'. (HTTP_CONTEXT_MAGIC): New. (http_context_s): New field 'magic'. (my_ntbtls_verify_cb): Assert MAGIC. (fp_onclose_notification): Ditto. (session_unref): Ditto. Reset MAGIC. (http_session_new): Set MAGIC. (http_open): Ditto. (http_raw_connect): Ditto. (http_close): Assert MAGIC. Reset MAGIC. * dirmngr/t-http.c (my_http_tls_verify_cb): MArk HTTP_FLAGS unused. -- We pass those handles through opaque pointers. The magic numbers will help to detect wrong use. Signed-off-by: Werner Koch <[email protected]>
2017-02-20 dirmngr: Make t-http.c work again with gnutls - second tryWerner Koch1-0/+1
* dirmngr/t-http.c: Always include ksba.h. Signed-off-by: Werner Koch <[email protected]>
2017-02-19dirmngr: First take on ntbtls cert verification.Werner Koch1-8/+58
* 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 <[email protected]>
2017-02-18dirmngr: Add per-session verify callback to http.cWerner Koch1-1/+1
* dirmngr/http.h (http_verify_cb_t): New type. * dirmngr/http.c (http_session_s): Add fields flags, verify_cb, and verify_cb_value. (http_session_new): Remove arg tls_priority. Add args verify_cb and verify-cb_value. Store them in the session object. (send_request): Use per-session verify callback. (http_verify_server_credentials) [HTTP_USE_NTBTLS]: Return GPG_ERR_NOT_IMPLEMENTED. * dirmngr/ks-engine-hkp.c (send_request): Adjust for changed http_session_new. * dirmngr/ks-engine-http.c (ks_http_fetch): Ditto. * dirmngr/t-http.c (main): Ditto. * dirmngr/server.c (do_get_cert_local): Replace xmalloc by malloc. Signed-off-by: Werner Koch <[email protected]>
2016-11-05Change all http://www.gnu.org in license notices to https://Werner Koch1-1/+1
--
2016-08-12Call log_set_prefix() with human-readable labels.Daniel Kahn Gillmor1-1/+1
* agent/preset-passphrase.c, agent/protect-tool.c, dirmngr/dirmngr.c * dirmngr/t-http.c, g10/gpg.c, g10/gpgv.c, g13/g13-syshelp.c * g13/g13.c, kbx/kbxutil.c, scd/scdaemon.c, sm/gpgsm.c * tests/gpgscm/main.c, tools/gpg-check-pattern.c * tools/gpg-connect-agent.c, tools/gpgconf.c, tools/gpgtar.c * tools/symcryptrun.c: Invoke log_set_prefix() with human-readable labels. -- Some invocations of log_set_prefix() were done with raw numeric values instead of values that humans can understand. Use symbolic representations instead of numeric for better readability. Signed-off-by: Daniel Kahn Gillmor <[email protected]>
2016-04-26http: Allow to request system defined CAs for TLS.Werner Koch1-1/+1
* 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 <[email protected]>
2016-01-22dirmngr: Use sks-keyservers CA by default for the hkps pool.Daniel Kahn Gillmor1-1/+1
* 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: [email protected] Signed-off-by: Werner Koch <[email protected]>
2015-12-02http: Enhance parser to detect .onion addresses.Werner Koch1-0/+5
* dirmngr/http.h (parsed_uri_s): Add flag 'onion'. * dirmngr/http.c (do_parse_uri): Set that flag. * dirmngr/t-http.c (main): Print flags. Signed-off-by: Werner Koch <[email protected]>
2015-10-25dirmngr: Add workaround for broken getaddrinfo.Werner Koch1-0/+1
* dirmngr/dns-stuff.c (resolve_name_standard): On failure retry by first resolving the CNAME. (get_dns_cname): New. * dirmngr/t-dns-stuff.c (main): Add option --cname. -- At least the getaddrinfo implementation in glibc 2.19-13 from Debian returns EAI_NONAME if the CNAME points to a too long list of A/AAAA addresses. Looking at the wire the data is correctly returned from the server but getaddrinfo seems to get confused by truncation and retry. To fix this we resolve the CNAME again and call getaddrinfo again with the canonical name. Signed-off-by: Werner Koch <[email protected]>
2015-10-21dirmngr: Use the new DNS wrapper for the HTTP module.Werner Koch1-0/+3
* dirmngr/t-http.c (main): Init assuan sockets. * dirmngr/http.c: Include dns-stuff.h. (connect_server)[!HAVE_GETADDRINFO]: Remove all code. (connect_server): Change to use resolve_dns_name. Signed-off-by: Werner Koch <[email protected]>
2015-10-18Move http module from common/ to dirmngr/.Werner Koch1-0/+0
* common/http.c: Move to ../dirmngr/. * common/http.h: Move to ../dirmngr/. * common/t-http.c: Move to ../dirmngr/. * common/tls-ca.pem: Move to ../dirmngr/. * common/Makefile.am: Do not build libcommontls.a libcommontlsnpth.a. Remove http.c related stuff. * po/POTFILES.in: Move http.c to dirmngr/. * dirmngr/Makefile.am (EXTRA_DIST): Add tls-ca.pem. (module_maint_tests): New. (noinst_PROGRAMS): Add module_maint_tests. (dirmngr_SOURCES): Add http.c and http.h. (dirmngr_LDADD): Remove libcommontlsnpth. (t_common_ldadd): Ditto. (t_http_SOURCES, t_http_CFLAGS, t_http_LDADD): New. (t_ldap_parse_uri_SOURCES): Add http.c. (t_ldap_parse_uri_CFLAGS): Build without npth. ($(PROGRAMS)): Do not require libcommontls.a libcommontlsnpth.a. * dirmngr/dirmngr.h, dirmngr/ks-engine.h: Fix include of http.h. -- All network access is done via dirmngr and thus http.c should be there. Signed-off-by: Werner Koch <[email protected]>
2015-09-18http: Add flag to force use of TOR (part 1)Werner Koch1-0/+8
* common/http.h (HTTP_FLAG_FORCE_TOR): New. * common/http.c (http_raw_connect, send_request): Detect flag and return an error for now. Signed-off-by: Werner Koch <[email protected]>
2014-10-02First changes for future use of NTBTLS.Werner Koch1-4/+15
* configure.ac (NEED_NTBTLS_ABI, NEED_NTBTLS_VERSION): New. (HTTP_USE_NTBTLS): New. Prefer over GNUTLS. * m4/ntbtls.m4: New. * m4/Makefile.am (EXTRA_DIST): Add new file. * common/http.c: Add conditionals to eventually use NTBTLS. -- This is only the configure stuff. If you have NTBTLS installed GNUTLS will not be used but there won't be any https support either :-(. This patch is used to have a real world test bench for the forthcoming library.
2014-09-18common: Do not build maintainer modules in non-maintainer mode.Werner Koch1-1/+1
* common/Makefile.am (module_maint_tests): Use only in maintainer mode. (t_common_cflags): New.
2014-08-26Switch to the libgpg-error provided estream.Werner Koch1-1/+1
* configure.ac (NEED_GPG_ERROR_VERSION): Reguire 1.14. (GPGRT_ENABLE_ES_MACROS): Define. (estream_INIT): Remove. * m4/estream.m4: Remove. * common/estream-printf.c, common/estream-printf.h: Remove. * common/estream.c, common/estream.h: Remove. * common/init.c (_init_common_subsystems): Call gpgrt initialization.
2014-05-05http: Add reference counting to the session object.Werner Koch1-7/+19
* common/http.c (http_session_t): Add field "refcount". (_my_socket_new, _my_socket_ref, _my_socket_unref): Add debug code. (send_request, my_npth_read, my_npth_write): Use SOCK object for the transport ptr. (http_session_release): Factor all code out to ... (session_unref): here. Deref SOCK. (http_session_new): Init refcount and transport ptr. (http_session_ref): New. Ref and unref all assignments. -- Having the reference counted session objects makes it easier for the application to pass around only an estream. Without that the application would need to implement an es_onclose machinery for the session object.
2014-05-02http: Add HTTP_FLAG_FORCE_TLS and http_get_tls_info.Werner Koch1-12/+101
* common/http.c (http_parse_uri): Factor code out to ... (parse_uri): here. Add arg FORCE_TLS. (do_parse_uri): Ditto. Implement flag. (http_get_tls_info): New. (http_register_tls_ca): Allow clearing of the list. (send_request): Use a default verification function. * common/http.h (HTTP_FLAG_FORCE_TLS): New. * common/t-http.c (main): Add several command line options.
2014-05-02http: Revamp TLS API.Werner Koch1-0/+269
* configure.ac (NEED_GNUTLS_VERSION): New. (HTTP_USE_GNUTLS, LIBGNUTLS_CFLAGS, LIBGNUTLS_LIBS): New ac_subst. * common/http.h (http_session_t): New. * common/http.c: Remove compatibility for gnutls < 3.0. (http_session_s): New. (cookie_s): Replace gnutls_session_t by http_session_t. (tls_callback, tls_ca_certlist): New variables. (my_socket_unref): Add preclose args. (my_npth_read, my_npth_write): New. (make_header_line): Fix bug using int* instead of char*. (http_register_tls_callback): New. (http_register_tls_ca): New. (http_session_new): New. (http_session_release): New. (http_get_header_names): New. (escape_data): Add hack to escape in forms mode. (send_request) [HTTP_USE_GNUTLS]: Support SNI. (send_request) [HTTP_USE_GNUTLS]: Fix use of make_header_line. (send_gnutls_bye): New. (cookie_close): Make use of preclose feature. (http_verify_server_credentials): New. (main) [TEST]: Remove test code. * common/t-http.c: New. * common/tls-ca.pem: New. * common/Makefile.am (tls_sources): New. Move http code to here. (libcommontls_a_SOURCES): New. (libcommontlsnpth_a_SOURCES): New. (EXTRA_DIST): Add tls-ca.pem (module_maint_tests): Add t-http. (t_http_SOURCES, t_http_CFLAGS, t_http_LDADD): New. * dirmngr/Makefile.am (dirmngr_LDADD): Add libcommontlsnpth. -- This new TLS API for http.c is much more flexible than the crude old hack.
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