Use attribute __gnu_printf__ also in estream header files.

* common/estream-printf.h: Use attribute gnu_printf.
* common/estream.h: Ditto.
dirmngr: Simplify strtok macro.

* dirmngr/ldap-url.c (ldap_utf8_strtok): Remove unused r3d arg.
(ldap_str2charray): Remove lasts.
--

I have no clue why an utf8 version was planned to be used.  Do the
LDAP folks really assume that eventually non-ascii delimiters might be
used?  Simplified it to silence the warning about an used helper var.
Silence more warnings about unused vars and args.

* dirmngr/cdblib.c (cdb_init) [W32]: Remove unused var.
* dirmngr/dirmngr-client.c (start_dirmngr): s/int/assuan_fd_t/.
* dirmngr/dirmngr.c (w32_service_control): Mark unused args.
(call_real_main): New.
(main) [W32]: Use new function to match prototype.
(real_main) [W32]: Mark unused vars.
(handle_signal) [W32]: Do not build the function at all.
(handle_connections) [W32]: Do not define signo.
* dirmngr/ldap-wrapper-ce.c (outstream_reader_cb): Remove used vars.
* g10/tdbio.c (ftruncate) [DOSISH]: Define only if not yet defined.
dirmmgr: Use a portability wrapper for struct timeval.

* dirmngr/dirmngr_ldap.c [W32]: Include winber.h.
(my_ldap_timeval_t): New.
Do not require libiconv for Android.

* configure.ac (require_iconv): New.  Set to false for android.
(AM_ICONV): Run only if required.
Comment fixes.

--

Reported-by: Daniel Kahn Gillmor
(cherry picked from commit 7db5c81e3a40b60e146f29c6744a33fd1b88c090)
scd: acquire lock in new_reader_slot.

* scd/apdu.c (new_reader_slot): Acquire lock.
(open_ct_reader, open_pcsc_reader_direct, open_pcsc_reader_wrapped)
(open_ccid_reader, open_rapdu_reader): Release lock.
(lock_slot, trylock_slot, unlock_slot): Move more to the top.

--
Fixes a test case of:
   No libpcsclite1 installed.
   Run gpg-agent
   Run command "gpg-connect-agent learn /bye" with no card/token
   Sometimes it fails: ERR 100663356 Not supported <SCD>
   While it should be always: ERR 100663404 Card error <SCD>

(cherry picked from commit 4f557cb9c2ebe274d6aacc60a09cd919055d01ed)

Resolved conflicts:
	scd/apdu.c: pth/npth changes. Move lock helpers to the top.
                    Take care of removed pcsc_no_service.
Backport useful code from fixes for bug 1447.

* configure.ac: Cehck for inet_ntop.
* m4/libcurl.m4: Provide a #define for the version of the curl
library.
--

We do not have keyserver helpers anymore but this fixes may come handy
eventually.
agent: API change of agent_key_from_file.

* agent/findkey.c (agent_key_from_file): Always return S-expression.
* agent/command.c (cmd_passwd): Distinguish by SHADOW_INFO.
(cmd_export_key): Likewise.  Free SHADOW_INFO.
(cmd_keytocard): Likewise.  Release S_SKEY.
* agent/pkdecrypt.c (agent_pkdecrypt): Likewise.
* agent/pksign.c (agent_pksign_do): Likewise.  Use the S-expression to
know the key type.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
List readline support in configure summary

* m4/readline.m4: Set gnupg_cv_have_readline.
* configure.ac: Add readline support to summary output.
--

Readline is an optional feature which is build if the readline
development files are available on the build systems.  Too often they
are missing on a (new) build machine which at least makes debugging
inconvenient.
Backport useful code from fixes for bug 1447.

* configure.ac: Cehck for inet_ntop.
* m4/libcurl.m4: Provide a #define for the version of the curl
library.
--

We do not have keyserver helpers anymore but this fixes may come handy
eventually.
dirmngr: Fix HKP host selection code.

* dirmngr/server.c (cmd_keyserver): Add option --resolve and change
--print-hosttable to --hosttable.
* dirmngr/ks-action.c (ks_printf_help): New.
(ks_action_resolve): New.
* dirmngr/ks-engine-hkp.c (select_random_host): Fix selection.
(ks_hkp_print_hosttable): Print to assuan stream.
(map_host): Remove debug code.  Add arg FORCE_SELECT.  Return numeric
IP addr if it can't be resolved.
(make_host_part): Add arg FORCE_SELECT; change callers to pass false.
(ks_hkp_resolve): New.
--

The new options for the keyserver command are useful for debugging.
For example:

  $ tools/gpg-connect-agent -S /usr/local/var/run/gnupg/S.dirmngr \
          'keyserver hkp://keys.gnupg.net' \
          'keyserver http://http-keys.gnupg.net' \
          'keyserver --resolve --hosttable' /bye

yields:

  OK
  OK
  S # http://astrath.net:80
  S # http://2001:41d0:1:e673::1:11371
  S # hosttable (idx, ipv4, ipv6, dead, name):
  S #   0       http-keys.gnupg.net
  S #   .   --> 10 11 12 1 5 8 7 4* 2 9 6 3
  S #   1 4     37.250.168.245.bredband.tre.se
  S #   2 4 6   keys.exosphere.de
  S #   3 4 6   poseidon.muc.drweb-av.de
  S #   4 4     astrath.net
  S #   5 4     79.143.214.216
  S #   6 4     openpgp.andrew.kvalhe.im
  S #   7 4     app.aaiedu.hr
  S #   8 4 6   alita.karotte.org
  S #   9 4 6   keyserver.bau5net.com
  S #  10 4     194.94.127.122
  S #  11   6   2001:4d88:1ffc:477::7
  S #  12   6   2a00:1280:8000:2:1:8:0:1
  S #  13       keys.gnupg.net
  S #   .   --> 23 28* 30 17 22 8 7 27 25 14 21 20 19 29 [...]
  S #  14 4     hufu.ki.iif.hu
  S #  15 4     pks.ms.mff.cuni.cz
  S #  16 4     pgpkeys.co.uk
  S #  17 4     80-239-156-219.customer.teliacarrier.com
  S #  18 4     srv01.secure-u.de
  S #  19 4     mallos.xs4all.nl
  S #  20 4     kronecker.scientia.net
  S #  21 4     keyserver.ut.mephi.ru
  S #  22 4     89-68-150-88.dynamic.chello.pl
  S #  23   6   2001:1608:21:6:84:200:66:125
  S #  24   6   sks.es.net
  S #  25   6   gstueve-1-pt.tunnel.tserv13.ash1.ipv6.he.net
  S #  26   6   sks.mrball.net
  S #  27   6   gozer.rediris.es
  S #  28   6   2001:41d0:1:e673::1
  S #  29   6   oteiza.siccegge.de
  S #  30   6   2403:4200:401:10::13
  S #  31   6   statler.serviz.fr
  OK
dirmngr: Make Assuan output of keyblocks easier readable

* dirmngr/server.c (data_line_cookie_write): Print shorter data lines
in verbose mode.
dirmngr: Add command option to mark hosts as dead or alive.

* dirmngr/server.c (cmd_killdirmngr): Factor some code out to ...
(check_owner_permission): here.
(cmd_keyserver): Add options --dead and --alive.
* dirmngr/ks-engine-hkp.c (host_in_pool_p): New.
(ks_hkp_mark_host): New.
--

Also removed the warning that the widnows part has not yet been done.
AFAICS, the current mingw supports the all used socket functions.
dirmngr: Put brackets around IP addresses in the hosttable.

* dirmngr/ks-engine-hkp.c (EAI_OVERFLOW): Provide a substitute.
(my_getnameinfo): New.
(map_host): Use it.
scd: writekey support of ECC.

* scd/app-openpgp.c (CURVE_SEC_P256K1, get_algo_byte): New.
(store_fpr): Support ECC keys with varargs.
(get_ecc_key_parameters, get_curve_name): Support secp256k1.
(parse_ecc_curve): Likewise.
(build_ecdsa_privkey_template, rsa_writekey, ecdsa_writekey): New.
(ecdh_writekey): New.  Not implemented yet.
(do_writekey): Call rsa_writekey, ecdsa_writekey, or ecdh_writekey.
(do_genkey): Follow the change of store_fpr.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
http: Add a flag to the URL parser indicating a literal v6 address.

* common/http.h (struct parsed_uri_t): Add field v6lit.
* common/http.c (do_parse_uri): Set v6lit.
Comment typo fixes

--
dirmngr: Detect dead keyservers and try another one.

* dirmngr/ks-action.c (ks_action_resolve): Rename var for clarity.
(ks_action_search, ks_action_put): Ditto.
(ks_action_get): Consult only the first server which retruned some
data.

* dirmngr/ks-engine-hkp.c (SEND_REQUEST_RETRIES): New.
(map_host): Add arg CTRL and call dirmngr_tick.
(make_host_part): Add arg CTRL.
(mark_host_dead): Allow the use of an URL.
(handle_send_request_error): New.
(ks_hkp_search, ks_hkp_get, ks_hkp_put): Mark host dead and retry on
error.
gpg: Add option --dirmngr-program.

* g10/gpg.c: Add option --dirmngr-program.
* g10/options.h (struct opt): Add field dirmngr_program.
* g10/call-dirmngr.c (create_context): Use new var.

* dirmngr/dirmngr.c: Include gc-opt-flags.h.
(main): Remove GC_OPT_FLAG_*.
* tools/gpgconf-comp.c (GC_OPT_FLAG_NO_CHANGE): Move macro to ...
* common/gc-opt-flags.h: here.
dirmngr: Default to a user socket name and enable autostart.

* common/homedir.c (dirmngr_socket_name): Rename to
dirmngr_sys_socket_name.
(dirmngr_user_socket_name): New.
* common/asshelp.c (start_new_dirmngr): Handle sys and user dirmngr
socket.
* dirmngr/dirmngr.c (main): Ditto.
* dirmngr/server.c (cmd_getinfo): Ditto.
* sm/server.c (gpgsm_server): Ditto.
* dirmngr/dirmngr-client.c (start_dirmngr): Likewise.
* tools/gpgconf.c (main): Print "dirmngr-sys-socket" with --list-dirs.

* configure.ac (USE_DIRMNGR_AUTO_START): Set by default.