Adding upstream version 2.2.40.upstream/2.2.40upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2497 insertions, 0 deletions

diff --git a/dirmngr/dirmngr.c b/dirmngr/dirmngr.c
new file mode 100644
index 0000000..e287194
--- /dev/null
+++ b/dirmngr/dirmngr.c
@@ -0,0 +1,2497 @@
+/* dirmngr.c - Keyserver and X.509 LDAP access
+ * Copyright (C) 2002 Klarälvdalens Datakonsult AB
+ * Copyright (C) 2003-2004, 2006-2007, 2008, 2010-2011, 2020-2021 g10 Code GmbH
+ * Copyright (C) 2014 Werner Koch
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <time.h>
+#include <fcntl.h>
+#ifndef HAVE_W32_SYSTEM
+#include <sys/socket.h>
+#include <sys/un.h>
+#endif
+#include <sys/stat.h>
+#include <unistd.h>
+#ifdef HAVE_SIGNAL_H
+# include <signal.h>
+#endif
+#ifdef HAVE_INOTIFY_INIT
+# include <sys/inotify.h>
+#endif /*HAVE_INOTIFY_INIT*/
+#include <npth.h>
+
+#include "dirmngr-err.h"
+
+#if  HTTP_USE_NTBTLS
+# include <ntbtls.h>
+#elif HTTP_USE_GNUTLS
+# include <gnutls/gnutls.h>
+#endif /*HTTP_USE_GNUTLS*/
+
+
+#define INCLUDED_BY_MAIN_MODULE 1
+#define GNUPG_COMMON_NEED_AFLOCAL
+#include "dirmngr.h"
+
+#include <assuan.h>
+
+#include "certcache.h"
+#include "crlcache.h"
+#include "crlfetch.h"
+#include "misc.h"
+#if USE_LDAP
+# include "ldapserver.h"
+#endif
+#include "../common/asshelp.h"
+#if USE_LDAP
+# include "ldap-wrapper.h"
+#endif
+#include "../common/init.h"
+#include "../common/gc-opt-flags.h"
+#include "dns-stuff.h"
+#include "http-common.h"
+
+#ifndef ENAMETOOLONG
+# define ENAMETOOLONG EINVAL
+#endif
+
+
+enum cmd_and_opt_values {
+  aNull = 0,
+  oCsh		  = 'c',
+  oQuiet	  = 'q',
+  oSh		  = 's',
+  oVerbose	  = 'v',
+  oNoVerbose = 500,
+
+  aServer,
+  aDaemon,
+  aSupervised,
+  aListCRLs,
+  aLoadCRL,
+  aFetchCRL,
+  aShutdown,
+  aFlush,
+  aGPGConfList,
+  aGPGConfTest,
+  aGPGConfVersions,
+
+  oOptions,
+  oDebug,
+  oDebugAll,
+  oDebugWait,
+  oDebugLevel,
+  oGnutlsDebug,
+  oDebugCacheExpiredCerts,
+  oNoGreeting,
+  oNoOptions,
+  oHomedir,
+  oNoDetach,
+  oLogFile,
+  oBatch,
+  oDisableHTTP,
+  oDisableLDAP,
+  oDisableIPv4,
+  oDisableIPv6,
+  oIgnoreLDAPDP,
+  oIgnoreHTTPDP,
+  oIgnoreOCSPSvcUrl,
+  oHonorHTTPProxy,
+  oHTTPProxy,
+  oLDAPProxy,
+  oOnlyLDAPProxy,
+  oLDAPServer,
+  oLDAPFile,
+  oLDAPTimeout,
+  oLDAPAddServers,
+  oOCSPResponder,
+  oOCSPSigner,
+  oOCSPMaxClockSkew,
+  oOCSPMaxPeriod,
+  oOCSPCurrentPeriod,
+  oMaxReplies,
+  oHkpCaCert,
+  oFakedSystemTime,
+  oForce,
+  oAllowOCSP,
+  oAllowVersionCheck,
+  oStealSocket,
+  oSocketName,
+  oLDAPWrapperProgram,
+  oHTTPWrapperProgram,
+  oIgnoreCert,
+  oIgnoreCertExtension,
+  oUseTor,
+  oNoUseTor,
+  oKeyServer,
+  oNameServer,
+  oDisableCheckOwnSocket,
+  oStandardResolver,
+  oRecursiveResolver,
+  oResolverTimeout,
+  oConnectTimeout,
+  oConnectQuickTimeout,
+  oListenBacklog,
+  aTest
+};
+
+
+
+static ARGPARSE_OPTS opts[] = {
+
+  ARGPARSE_c (aGPGConfList, "gpgconf-list", "@"),
+  ARGPARSE_c (aGPGConfTest, "gpgconf-test", "@"),
+  ARGPARSE_c (aGPGConfVersions, "gpgconf-versions", "@"),
+
+  ARGPARSE_group (300, N_("@Commands:\n ")),
+
+  ARGPARSE_c (aServer,   "server",  N_("run in server mode (foreground)") ),
+  ARGPARSE_c (aDaemon,   "daemon",  N_("run in daemon mode (background)") ),
+#ifndef HAVE_W32_SYSTEM
+  ARGPARSE_c (aSupervised,  "supervised", N_("run in supervised mode")),
+#endif
+  ARGPARSE_c (aListCRLs, "list-crls", N_("list the contents of the CRL cache")),
+  ARGPARSE_c (aLoadCRL,  "load-crl", N_("|FILE|load CRL from FILE into cache")),
+  ARGPARSE_c (aFetchCRL, "fetch-crl", N_("|URL|fetch a CRL from URL")),
+  ARGPARSE_c (aShutdown, "shutdown",  N_("shutdown the dirmngr")),
+  ARGPARSE_c (aFlush,    "flush",     N_("flush the cache")),
+
+
+  ARGPARSE_header (NULL, N_("Options used for startup")),
+
+  ARGPARSE_s_n (oNoDetach, "no-detach", N_("do not detach from the console")),
+  ARGPARSE_s_n (oSh,       "sh",        N_("sh-style command output")),
+  ARGPARSE_s_n (oCsh,      "csh",       N_("csh-style command output")),
+  ARGPARSE_s_n (oStealSocket, "steal-socket", "@"),
+  ARGPARSE_s_s (oHomedir, "homedir", "@"),
+  ARGPARSE_conffile (oOptions,  "options", N_("|FILE|read options from FILE")),
+  ARGPARSE_noconffile (oNoOptions, "no-options", "@"),
+
+
+  ARGPARSE_header ("Monitor", N_("Options controlling the diagnostic output")),
+
+  ARGPARSE_s_n (oVerbose,  "verbose",   N_("verbose")),
+  ARGPARSE_s_n (oQuiet,    "quiet",     N_("be somewhat more quiet")),
+  ARGPARSE_s_n (oNoGreeting, "no-greeting", "@"),
+  ARGPARSE_s_s (oDebugLevel, "debug-level",
+                N_("|LEVEL|set the debugging level to LEVEL")),
+  ARGPARSE_s_s (oDebug,    "debug", "@"),
+  ARGPARSE_s_n (oDebugAll, "debug-all", "@"),
+  ARGPARSE_s_i (oGnutlsDebug, "gnutls-debug", "@"),
+  ARGPARSE_s_i (oGnutlsDebug, "tls-debug", "@"),
+  ARGPARSE_s_i (oDebugWait, "debug-wait", "@"),
+  ARGPARSE_s_s (oLogFile,  "log-file",
+                N_("|FILE|write server mode logs to FILE")),
+
+
+  ARGPARSE_header ("Configuration",
+                   N_("Options controlling the configuration")),
+
+  ARGPARSE_s_n (oAllowVersionCheck, "allow-version-check",
+                N_("allow online software version check")),
+  ARGPARSE_s_i (oListenBacklog, "listen-backlog", "@"),
+  ARGPARSE_s_i (oMaxReplies, "max-replies",
+                N_("|N|do not return more than N items in one query")),
+  ARGPARSE_s_u (oFakedSystemTime, "faked-system-time", "@"), /*(epoch time)*/
+  ARGPARSE_s_n (oDisableCheckOwnSocket, "disable-check-own-socket", "@"),
+  ARGPARSE_s_s (oIgnoreCert,"ignore-cert", "@"),
+  ARGPARSE_s_s (oIgnoreCertExtension,"ignore-cert-extension", "@"),
+
+
+  ARGPARSE_header ("Network", N_("Network related options")),
+
+  ARGPARSE_s_n (oUseTor, "use-tor", N_("route all network traffic via Tor")),
+  ARGPARSE_s_n (oNoUseTor, "no-use-tor", "@"),
+  ARGPARSE_s_n (oDisableIPv4, "disable-ipv4", "@"),
+  ARGPARSE_s_n (oDisableIPv6, "disable-ipv6", "@"),
+  ARGPARSE_s_n (oStandardResolver, "standard-resolver", "@"),
+  ARGPARSE_s_n (oRecursiveResolver, "recursive-resolver", "@"),
+  ARGPARSE_s_i (oResolverTimeout, "resolver-timeout", "@"),
+  ARGPARSE_s_s (oNameServer, "nameserver", "@"),
+  ARGPARSE_s_i (oConnectTimeout, "connect-timeout", "@"),
+  ARGPARSE_s_i (oConnectQuickTimeout, "connect-quick-timeout", "@"),
+
+
+  ARGPARSE_header ("Keyserver", N_("Configuration for Keyservers")),
+
+  ARGPARSE_s_s (oKeyServer, "keyserver",
+                N_("|URL|use keyserver at URL")),
+  ARGPARSE_s_s (oHkpCaCert, "hkp-cacert",
+                N_("|FILE|use the CA certificates in FILE for HKP over TLS")),
+
+
+  ARGPARSE_header ("HTTP", N_("Configuration for HTTP servers")),
+
+  ARGPARSE_s_n (oDisableHTTP, "disable-http", N_("inhibit the use of HTTP")),
+  ARGPARSE_s_n (oIgnoreHTTPDP,"ignore-http-dp",
+                N_("ignore HTTP CRL distribution points")),
+  ARGPARSE_s_s (oHTTPProxy,  "http-proxy",
+                N_("|URL|redirect all HTTP requests to URL")),
+  ARGPARSE_s_n (oHonorHTTPProxy, "honor-http-proxy",
+                N_("use system's HTTP proxy setting")),
+  ARGPARSE_s_s (oLDAPWrapperProgram, "ldap-wrapper-program", "@"),
+
+
+  ARGPARSE_header ("LDAP", N_("Configuration of LDAP servers to use")),
+
+  ARGPARSE_s_n (oDisableLDAP, "disable-ldap", N_("inhibit the use of LDAP")),
+  ARGPARSE_s_n (oIgnoreLDAPDP,"ignore-ldap-dp",
+                N_("ignore LDAP CRL distribution points")),
+  ARGPARSE_s_s (oLDAPProxy,  "ldap-proxy",
+                N_("|HOST|use HOST for LDAP queries")),
+  ARGPARSE_s_n (oOnlyLDAPProxy, "only-ldap-proxy",
+                N_("do not use fallback hosts with --ldap-proxy")),
+  ARGPARSE_s_s (oLDAPServer, "ldapserver",
+                N_("|SPEC|use this keyserver to lookup keys")),
+  ARGPARSE_s_s (oLDAPFile, "ldapserverlist-file",
+                N_("|FILE|read LDAP server list from FILE")),
+  ARGPARSE_s_n (oLDAPAddServers, "add-servers",
+                N_("add new servers discovered in CRL distribution"
+                   " points to serverlist")),
+  ARGPARSE_s_i (oLDAPTimeout, "ldaptimeout",
+                N_("|N|set LDAP timeout to N seconds")),
+
+
+  ARGPARSE_header ("OCSP", N_("Configuration for OCSP")),
+
+  ARGPARSE_s_n (oAllowOCSP, "allow-ocsp", N_("allow sending OCSP requests")),
+  ARGPARSE_s_n (oIgnoreOCSPSvcUrl, "ignore-ocsp-service-url",
+                N_("ignore certificate contained OCSP service URLs")),
+  ARGPARSE_s_s (oOCSPResponder, "ocsp-responder",
+                N_("|URL|use OCSP responder at URL")),
+  ARGPARSE_s_s (oOCSPSigner, "ocsp-signer",
+                N_("|FPR|OCSP response signed by FPR")),
+  ARGPARSE_s_i (oOCSPMaxClockSkew, "ocsp-max-clock-skew", "@"),
+  ARGPARSE_s_i (oOCSPMaxPeriod,    "ocsp-max-period", "@"),
+  ARGPARSE_s_i (oOCSPCurrentPeriod, "ocsp-current-period", "@"),
+
+
+  ARGPARSE_header (NULL, N_("Other options")),
+
+  ARGPARSE_s_n (oForce,    "force",    N_("force loading of outdated CRLs")),
+
+  ARGPARSE_s_s (oSocketName, "socket-name", "@"),  /* Only for debugging.  */
+  ARGPARSE_s_n (oDebugCacheExpiredCerts, "debug-cache-expired-certs", "@"),
+
+  ARGPARSE_header (NULL, ""),  /* Stop the header group.  */
+
+  /* Not yet used options.  */
+  ARGPARSE_s_n (oBatch,    "batch",       "@"),
+  ARGPARSE_s_s (oHTTPWrapperProgram, "http-wrapper-program", "@"),
+
+
+  ARGPARSE_group (302,N_("@\n(See the \"info\" manual for a complete listing "
+                         "of all commands and options)\n")),
+
+  ARGPARSE_end ()
+};
+
+/* The list of supported debug flags.  */
+static struct debug_flags_s debug_flags [] =
+  {
+    { DBG_X509_VALUE   , "x509"    },
+    { DBG_CRYPTO_VALUE , "crypto"  },
+    { DBG_MEMORY_VALUE , "memory"  },
+    { DBG_CACHE_VALUE  , "cache"   },
+    { DBG_MEMSTAT_VALUE, "memstat" },
+    { DBG_HASHING_VALUE, "hashing" },
+    { DBG_IPC_VALUE    , "ipc"     },
+    { DBG_DNS_VALUE    , "dns"     },
+    { DBG_NETWORK_VALUE, "network" },
+    { DBG_LOOKUP_VALUE , "lookup"  },
+    { DBG_EXTPROG_VALUE, "extprog" },
+    { 77, NULL } /* 77 := Do not exit on "help" or "?".  */
+  };
+
+#define DEFAULT_MAX_REPLIES 10
+#define DEFAULT_LDAP_TIMEOUT 15  /* seconds */
+
+#define DEFAULT_CONNECT_TIMEOUT       (15*1000)  /* 15 seconds */
+#define DEFAULT_CONNECT_QUICK_TIMEOUT ( 2*1000)  /*  2 seconds */
+
+/* For the cleanup handler we need to keep track of the socket's name.  */
+static const char *socket_name;
+/* If the socket has been redirected, this is the name of the
+   redirected socket..  */
+static const char *redir_socket_name;
+
+/* We need to keep track of the server's nonces (these are dummies for
+   POSIX systems). */
+static assuan_sock_nonce_t socket_nonce;
+
+/* Value for the listen() backlog argument.
+ * Change at runtime with --listen-backlog.  */
+static int listen_backlog = 64;
+
+/* Only if this flag has been set will we remove the socket file.  */
+static int cleanup_socket;
+
+/* Keep track of the current log file so that we can avoid updating
+   the log file after a SIGHUP if it didn't changed. Malloced. */
+static char *current_logfile;
+
+/* Helper to implement --debug-level. */
+static const char *debug_level;
+
+/* Helper to set the NTBTLS or GNUTLS log level.  */
+static int opt_gnutls_debug = -1;
+
+/* Flag indicating that a shutdown has been requested.  */
+static volatile int shutdown_pending;
+
+/* Flags to indicate that we shall not watch our own socket. */
+static int disable_check_own_socket;
+
+/* Flag indicating to start the daemon even if one already runs.  */
+static int steal_socket;
+
+
+/* Flag to control the Tor mode.  */
+static enum
+  { TOR_MODE_AUTO = 0,  /* Switch to NO or YES         */
+    TOR_MODE_NEVER,     /* Never use Tor.              */
+    TOR_MODE_NO,        /* Do not use Tor              */
+    TOR_MODE_YES,       /* Use Tor                     */
+    TOR_MODE_FORCE      /* Force using Tor             */
+  } tor_mode;
+
+
+/* Counter for the active connections.  */
+static int active_connections;
+
+/* This flag is set by any network access and used by the housekeeping
+ * thread to run background network tasks.  */
+static int network_activity_seen;
+
+/* A list of filenames registred with --hkp-cacert.  */
+static strlist_t hkp_cacert_filenames;
+
+/* A flag used to clear the list of ldapservers iff --ldapserver is
+ * given on the command line or one of the conf files. In this case we
+ * want to clear all old specifications through the legacy
+ * dirmngr_ldapservers.conf. */
+static int ldapserver_list_needs_reset;
+
+/* The timer tick used for housekeeping stuff.  The second constant is used when a shutdown is pending.  */
+#define TIMERTICK_INTERVAL           (60)
+#define TIMERTICK_INTERVAL_SHUTDOWN  (4)
+
+/* How oft to run the housekeeping.  */
+#define HOUSEKEEPING_INTERVAL      (600)
+
+
+/* This union is used to avoid compiler warnings in case a pointer is
+   64 bit and an int 32 bit.  We store an integer in a pointer and get
+   it back later (npth_getspecific et al.).  */
+union int_and_ptr_u
+{
+  int  aint;
+  assuan_fd_t afd;
+  void *aptr;
+};
+
+
+
+/* The key used to store the current file descriptor in the thread
+   local storage.  We use this in conjunction with the
+   log_set_pid_suffix_cb feature.  */
+#ifndef HAVE_W32_SYSTEM
+static npth_key_t my_tlskey_current_fd;
+#endif
+
+/* Prototypes. */
+static void cleanup (void);
+#if USE_LDAP
+static ldap_server_t parse_ldapserver_file (const char* filename, int ienoent);
+#endif /*USE_LDAP*/
+static fingerprint_list_t parse_fingerprint_item (const char *string,
+                                                  const  char *optionname,
+                                                  int want_binary);
+static void netactivity_action (void);
+static void handle_connections (assuan_fd_t listen_fd);
+static void gpgconf_versions (void);
+
+
+/* NPth wrapper function definitions. */
+ASSUAN_SYSTEM_NPTH_IMPL;
+
+static const char *
+my_strusage( int level )
+{
+  const char *p;
+  switch ( level )
+    {
+    case  9: p = "GPL-3.0-or-later"; break;
+    case 11: p = "@DIRMNGR@ (@GNUPG@)";
+      break;
+    case 13: p = VERSION; break;
+    case 14: p = GNUPG_DEF_COPYRIGHT_LINE; break;
+    case 17: p = PRINTABLE_OS_NAME; break;
+      /* TRANSLATORS: @EMAIL@ will get replaced by the actual bug
+         reporting address.  This is so that we can change the
+         reporting address without breaking the translations.  */
+    case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
+    case 49: p = PACKAGE_BUGREPORT; break;
+    case 1:
+    case 40: p = _("Usage: @DIRMNGR@ [options] (-h for help)");
+      break;
+    case 41: p = _("Syntax: @DIRMNGR@ [options] [command [args]]\n"
+                   "Keyserver, CRL, and OCSP access for @GNUPG@\n");
+      break;
+
+    default: p = NULL;
+    }
+  return p;
+}
+
+
+/* Callback from libksba to hash a provided buffer.  Our current
+   implementation does only allow SHA-1 for hashing. This may be
+   extended by mapping the name, testing for algorithm availibility
+   and adjust the length checks accordingly. */
+static gpg_error_t
+my_ksba_hash_buffer (void *arg, const char *oid,
+                     const void *buffer, size_t length, size_t resultsize,
+                     unsigned char *result, size_t *resultlen)
+{
+  (void)arg;
+
+  if (oid && strcmp (oid, "1.3.14.3.2.26"))
+    return gpg_error (GPG_ERR_NOT_SUPPORTED);
+  if (resultsize < 20)
+    return gpg_error (GPG_ERR_BUFFER_TOO_SHORT);
+  gcry_md_hash_buffer (2, result, buffer, length);
+  *resultlen = 20;
+  return 0;
+}
+
+
+/* GNUTLS log function callback.  */
+#ifdef HTTP_USE_GNUTLS
+static void
+my_gnutls_log (int level, const char *text)
+{
+  int n;
+
+  n = strlen (text);
+  while (n && text[n-1] == '\n')
+    n--;
+
+  log_debug ("gnutls:L%d: %.*s\n", level, n, text);
+}
+#endif /*HTTP_USE_GNUTLS*/
+
+/* Setup the debugging.  With a LEVEL of NULL only the active debug
+   flags are propagated to the subsystems.  With LEVEL set, a specific
+   set of debug flags is set; thus overriding all flags already
+   set. */
+static void
+set_debug (void)
+{
+  int numok = (debug_level && digitp (debug_level));
+  int numlvl = numok? atoi (debug_level) : 0;
+
+  if (!debug_level)
+    ;
+  else if (!strcmp (debug_level, "none") || (numok && numlvl < 1))
+    opt.debug = 0;
+  else if (!strcmp (debug_level, "basic") || (numok && numlvl <= 2))
+    opt.debug = DBG_IPC_VALUE;
+  else if (!strcmp (debug_level, "advanced") || (numok && numlvl <= 5))
+    opt.debug = (DBG_IPC_VALUE|DBG_X509_VALUE|DBG_LOOKUP_VALUE);
+  else if (!strcmp (debug_level, "expert") || (numok && numlvl <= 8))
+    opt.debug = (DBG_IPC_VALUE|DBG_X509_VALUE|DBG_LOOKUP_VALUE
+                 |DBG_CACHE_VALUE|DBG_CRYPTO_VALUE);
+  else if (!strcmp (debug_level, "guru") || numok)
+    {
+      opt.debug = ~0;
+      /* Unless the "guru" string has been used we don't want to allow
+         hashing debugging.  The rationale is that people tend to
+         select the highest debug value and would then clutter their
+         disk with debug files which may reveal confidential data.  */
+      if (numok)
+        opt.debug &= ~(DBG_HASHING_VALUE);
+    }
+  else
+    {
+      log_error (_("invalid debug-level '%s' given\n"), debug_level);
+      log_info (_("valid debug levels are: %s\n"),
+                "none, basic, advanced, expert, guru");
+      opt.debug = 0; /* Reset debugging, so that prior debug
+                        statements won't have an undesired effect. */
+    }
+
+
+  if (opt.debug && !opt.verbose)
+    {
+      opt.verbose = 1;
+      gcry_control (GCRYCTL_SET_VERBOSITY, (int)opt.verbose);
+    }
+  if (opt.debug && opt.quiet)
+    opt.quiet = 0;
+
+  if (opt.debug & DBG_CRYPTO_VALUE )
+    gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1);
+
+#if HTTP_USE_NTBTLS
+  if (opt_gnutls_debug >= 0)
+    {
+      ntbtls_set_debug (opt_gnutls_debug, NULL, NULL);
+    }
+#elif HTTP_USE_GNUTLS
+  if (opt_gnutls_debug >= 0)
+    {
+      gnutls_global_set_log_function (my_gnutls_log);
+      gnutls_global_set_log_level (opt_gnutls_debug);
+    }
+#endif /*HTTP_USE_GNUTLS*/
+
+  if (opt.debug)
+    parse_debug_flag (NULL, &opt.debug, debug_flags);
+}
+
+
+static void
+set_tor_mode (void)
+{
+  if (dirmngr_use_tor ())
+    {
+      /* Enable Tor mode and when called again force a new curcuit
+       * (e.g. on SIGHUP).  */
+      enable_dns_tormode (1);
+      if (assuan_sock_set_flag (ASSUAN_INVALID_FD, "tor-mode", 1))
+        {
+          log_error ("error enabling Tor mode: %s\n", strerror (errno));
+          log_info ("(is your Libassuan recent enough?)\n");
+        }
+    }
+  else
+    disable_dns_tormode ();
+}
+
+
+/* Return true if Tor shall be used.  */
+int
+dirmngr_use_tor (void)
+{
+  if (tor_mode == TOR_MODE_AUTO)
+    {
+      /* Figure out whether Tor is running.  */
+      assuan_fd_t sock;
+
+      sock = assuan_sock_connect_byname (NULL, 0, 0, NULL, ASSUAN_SOCK_TOR);
+      if (sock == ASSUAN_INVALID_FD)
+        tor_mode = TOR_MODE_NO;
+      else
+        {
+          tor_mode = TOR_MODE_YES;
+          assuan_sock_close (sock);
+        }
+    }
+
+  if (tor_mode == TOR_MODE_FORCE)
+    return 2; /* Use Tor (using 2 to indicate force mode) */
+  else if (tor_mode == TOR_MODE_YES)
+    return 1; /* Use Tor */
+  else
+    return 0; /* Do not use Tor.  */
+}
+
+
+/* This is somewhat similar to dirmngr_use_tor but avoids a trial
+ * connect and may thus be faster for this special case.  */
+int
+dirmngr_never_use_tor_p (void)
+{
+  return tor_mode == TOR_MODE_NEVER;
+}
+
+
+static void
+wrong_args (const char *text)
+{
+  es_fprintf (es_stderr, _("usage: %s [options] "), DIRMNGR_NAME);
+  es_fputs (text, es_stderr);
+  es_putc ('\n', es_stderr);
+  dirmngr_exit (2);
+}
+
+
+/* Helper to stop the reaper thread for the ldap wrapper.  */
+static void
+shutdown_reaper (void)
+{
+#if USE_LDAP
+  ldap_wrapper_wait_connections ();
+#endif
+}
+
+
+/* Handle options which are allowed to be reset after program start.
+   Return true if the current option in PARGS could be handled and
+   false if not.  As a special feature, passing a value of NULL for
+   PARGS, resets the options to the default.  REREAD should be set
+   true if it is not the initial option parsing. */
+static int
+parse_rereadable_options (ARGPARSE_ARGS *pargs, int reread)
+{
+  if (!pargs)
+    { /* Reset mode. */
+      opt.quiet = 0;
+      opt.verbose = 0;
+      opt.debug = 0;
+      opt.ldap_wrapper_program = NULL;
+      opt.disable_http = 0;
+      opt.disable_ldap = 0;
+      opt.honor_http_proxy = 0;
+      opt.http_proxy = NULL;
+      opt.ldap_proxy = NULL;
+      opt.only_ldap_proxy = 0;
+      opt.ignore_http_dp = 0;
+      opt.ignore_ldap_dp = 0;
+      opt.ignore_ocsp_service_url = 0;
+      opt.allow_ocsp = 0;
+      opt.allow_version_check = 0;
+      opt.ocsp_responder = NULL;
+      opt.ocsp_max_clock_skew = 10 * 60;      /* 10 minutes.  */
+      opt.ocsp_max_period = 90 * 86400;       /* 90 days.  */
+      opt.ocsp_current_period = 3 * 60 * 60;  /* 3 hours. */
+      opt.max_replies = DEFAULT_MAX_REPLIES;
+      while (opt.ocsp_signer)
+        {
+          fingerprint_list_t tmp = opt.ocsp_signer->next;
+          xfree (opt.ocsp_signer);
+          opt.ocsp_signer = tmp;
+        }
+      while (opt.ignored_certs)
+        {
+          fingerprint_list_t tmp = opt.ignored_certs->next;
+          xfree (opt.ignored_certs);
+          opt.ignored_certs = tmp;
+        }
+      FREE_STRLIST (opt.ignored_cert_extensions);
+      http_register_tls_ca (NULL);
+      FREE_STRLIST (hkp_cacert_filenames);
+      FREE_STRLIST (opt.keyserver);
+      /* Note: We do not allow resetting of TOR_MODE_FORCE at runtime.  */
+      if (tor_mode != TOR_MODE_FORCE)
+        tor_mode = TOR_MODE_AUTO;
+      disable_check_own_socket = 0;
+      enable_standard_resolver (0);
+      set_dns_timeout (0);
+      opt.connect_timeout = 0;
+      opt.connect_quick_timeout = 0;
+      opt.ldaptimeout = DEFAULT_LDAP_TIMEOUT;
+      ldapserver_list_needs_reset = 1;
+      opt.debug_cache_expired_certs = 0;
+      return 1;
+    }
+
+  switch (pargs->r_opt)
+    {
+    case oQuiet:   opt.quiet = 1; break;
+    case oVerbose: opt.verbose++; break;
+    case oDebug:
+      parse_debug_flag (pargs->r.ret_str, &opt.debug, debug_flags);
+      break;
+    case oDebugAll: opt.debug = ~0; break;
+    case oDebugLevel: debug_level = pargs->r.ret_str; break;
+    case oGnutlsDebug: opt_gnutls_debug = pargs->r.ret_int; break;
+
+    case oLogFile:
+      if (!reread)
+        return 0; /* Not handled. */
+      if (!current_logfile || !pargs->r.ret_str
+          || strcmp (current_logfile, pargs->r.ret_str))
+        {
+          log_set_file (pargs->r.ret_str);
+          xfree (current_logfile);
+          current_logfile = xtrystrdup (pargs->r.ret_str);
+        }
+      break;
+
+    case oDisableCheckOwnSocket: disable_check_own_socket = 1; break;
+
+    case oLDAPWrapperProgram:
+      opt.ldap_wrapper_program = pargs->r.ret_str;
+      break;
+    case oHTTPWrapperProgram:
+      opt.http_wrapper_program = pargs->r.ret_str;
+      break;
+
+    case oDisableHTTP: opt.disable_http = 1; break;
+    case oDisableLDAP: opt.disable_ldap = 1; break;
+    case oDisableIPv4: opt.disable_ipv4 = 1; break;
+    case oDisableIPv6: opt.disable_ipv6 = 1; break;
+    case oHonorHTTPProxy: opt.honor_http_proxy = 1; break;
+    case oHTTPProxy: opt.http_proxy = pargs->r.ret_str; break;
+    case oLDAPProxy: opt.ldap_proxy = pargs->r.ret_str; break;
+    case oOnlyLDAPProxy: opt.only_ldap_proxy = 1; break;
+    case oIgnoreHTTPDP: opt.ignore_http_dp = 1; break;
+    case oIgnoreLDAPDP: opt.ignore_ldap_dp = 1; break;
+    case oIgnoreOCSPSvcUrl: opt.ignore_ocsp_service_url = 1; break;
+
+    case oAllowOCSP: opt.allow_ocsp = 1; break;
+    case oAllowVersionCheck: opt.allow_version_check = 1; break;
+    case oOCSPResponder: opt.ocsp_responder = pargs->r.ret_str; break;
+    case oOCSPSigner:
+      opt.ocsp_signer = parse_fingerprint_item (pargs->r.ret_str,
+                                                "--ocsp-signer", 0);
+      break;
+    case oOCSPMaxClockSkew: opt.ocsp_max_clock_skew = pargs->r.ret_int; break;
+    case oOCSPMaxPeriod: opt.ocsp_max_period = pargs->r.ret_int; break;
+    case oOCSPCurrentPeriod: opt.ocsp_current_period = pargs->r.ret_int; break;
+
+    case oMaxReplies: opt.max_replies = pargs->r.ret_int; break;
+
+    case oHkpCaCert:
+      {
+        /* We need to register the filenames with gnutls (http.c) and
+         * also for our own cert cache.  */
+        char *tmpname;
+
+        /* Do tilde expansion and make path absolute.  */
+        tmpname = make_absfilename (pargs->r.ret_str, NULL);
+        http_register_tls_ca (tmpname);
+        add_to_strlist (&hkp_cacert_filenames, pargs->r.ret_str);
+        xfree (tmpname);
+      }
+      break;
+
+    case oIgnoreCert:
+      {
+        fingerprint_list_t item, r;
+        item = parse_fingerprint_item (pargs->r.ret_str, "--ignore-cert", 20);
+        if (item)
+          {  /* Append  */
+            if (!opt.ignored_certs)
+              opt.ignored_certs = item;
+            else
+              {
+                for (r = opt.ignored_certs; r->next; r = r->next)
+                  ;
+                r->next = item;
+              }
+          }
+      }
+      break;
+
+    case oIgnoreCertExtension:
+      add_to_strlist (&opt.ignored_cert_extensions, pargs->r.ret_str);
+      break;
+
+    case oUseTor:
+      tor_mode = TOR_MODE_FORCE;
+      break;
+    case oNoUseTor:
+      if (tor_mode != TOR_MODE_FORCE)
+        tor_mode = TOR_MODE_NEVER;
+      break;
+
+    case oStandardResolver: enable_standard_resolver (1); break;
+    case oRecursiveResolver: enable_recursive_resolver (1); break;
+
+    case oLDAPServer:
+#if USE_LDAP
+      {
+        ldap_server_t server;
+        char *p;
+
+        p = pargs->r.ret_str;
+        if (!strncmp (p, "ldap:", 5) && !(p[5] == '/' && p[6] == '/'))
+          p += 5;
+
+        server = ldapserver_parse_one (p, NULL, 0);
+        if (server)
+          {
+            if (ldapserver_list_needs_reset)
+              {
+                ldapserver_list_needs_reset = 0;
+                ldapserver_list_free (opt.ldapservers);
+                opt.ldapservers = NULL;
+              }
+            server->next = opt.ldapservers;
+            opt.ldapservers = server;
+          }
+      }
+#endif
+      break;
+
+    case oKeyServer:
+      if (*pargs->r.ret_str)
+        add_to_strlist (&opt.keyserver, pargs->r.ret_str);
+      break;
+
+    case oNameServer:
+      set_dns_nameserver (pargs->r.ret_str);
+      break;
+
+    case oResolverTimeout:
+      set_dns_timeout (pargs->r.ret_int);
+      break;
+
+    case oConnectTimeout:
+      opt.connect_timeout = pargs->r.ret_ulong * 1000;
+      break;
+
+    case oConnectQuickTimeout:
+      opt.connect_quick_timeout = pargs->r.ret_ulong * 1000;
+      break;
+
+    case oLDAPTimeout:
+      opt.ldaptimeout = pargs->r.ret_int;
+      break;
+
+    case oDebugCacheExpiredCerts:
+      opt.debug_cache_expired_certs = 0;
+      break;
+
+    default:
+      return 0; /* Not handled. */
+    }
+
+  set_dns_verbose (opt.verbose, !!DBG_DNS);
+  http_set_verbose (opt.verbose, !!DBG_NETWORK);
+  set_dns_disable_ipv4 (opt.disable_ipv4);
+  set_dns_disable_ipv6 (opt.disable_ipv6);
+
+  return 1; /* Handled. */
+}
+
+
+/* This fucntion is called after option parsing to adjust some values
+ * and call option setup functions.  */
+static void
+post_option_parsing (void)
+{
+  /* It would be too surpirsing if the quick timeout is larger than
+   * the standard value.  */
+  if (opt.connect_quick_timeout > opt.connect_timeout)
+    opt.connect_quick_timeout = opt.connect_timeout;
+
+  set_debug ();
+  set_tor_mode ();
+}
+
+
+#ifndef HAVE_W32_SYSTEM
+static int
+pid_suffix_callback (unsigned long *r_suffix)
+{
+  union int_and_ptr_u value;
+
+  memset (&value, 0, sizeof value);
+  value.aptr = npth_getspecific (my_tlskey_current_fd);
+  *r_suffix = value.aint;
+  return (*r_suffix != -1);  /* Use decimal representation.  */
+}
+#endif /*!HAVE_W32_SYSTEM*/
+
+#if HTTP_USE_NTBTLS
+static void
+my_ntbtls_log_handler (void *opaque, int level, const char *fmt, va_list argv)
+{
+  (void)opaque;
+
+  if (level == -1)
+    log_logv_with_prefix (GPGRT_LOG_INFO, "ntbtls: ", fmt, argv);
+  else
+    {
+      char prefix[10+20];
+      snprintf (prefix, sizeof prefix, "ntbtls(%d): ", level);
+      log_logv_with_prefix (GPGRT_LOG_DEBUG, prefix, fmt, argv);
+    }
+}
+#endif
+
+
+static void
+thread_init (void)
+{
+  npth_init ();
+  assuan_set_system_hooks (ASSUAN_SYSTEM_NPTH);
+  gpgrt_set_syscall_clamp (npth_unprotect, npth_protect);
+
+  /* Now with NPth running we can set the logging callback.  Our
+     windows implementation does not yet feature the NPth TLS
+     functions.  */
+#ifndef HAVE_W32_SYSTEM
+  if (npth_key_create (&my_tlskey_current_fd, NULL) == 0)
+    if (npth_setspecific (my_tlskey_current_fd, NULL) == 0)
+      log_set_pid_suffix_cb (pid_suffix_callback);
+#endif /*!HAVE_W32_SYSTEM*/
+}
+
+
+int
+main (int argc, char **argv)
+{
+  enum cmd_and_opt_values cmd = 0;
+  ARGPARSE_ARGS pargs;
+  int orig_argc;
+  char **orig_argv;
+  char *last_configname = NULL;
+  const char *configname = NULL;
+  const char *shell;
+  int debug_argparser = 0;
+  int greeting = 0;
+  int nogreeting = 0;
+  int nodetach = 0;
+  int csh_style = 0;
+  char *logfile = NULL;
+#if USE_LDAP
+  char *ldapfile = NULL;
+#endif /*USE_LDAP*/
+  int debug_wait = 0;
+  int rc;
+  struct assuan_malloc_hooks malloc_hooks;
+
+  early_system_init ();
+  set_strusage (my_strusage);
+  log_set_prefix (DIRMNGR_NAME, GPGRT_LOG_WITH_PREFIX | GPGRT_LOG_WITH_PID);
+
+  /* Make sure that our subsystems are ready.  */
+  i18n_init ();
+  init_common_subsystems (&argc, &argv);
+
+  gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
+
+ /* Check that the libraries are suitable.  Do it here because
+    the option parsing may need services of the libraries. */
+  if (!ksba_check_version (NEED_KSBA_VERSION) )
+    log_fatal( _("%s is too old (need %s, have %s)\n"), "libksba",
+               NEED_KSBA_VERSION, ksba_check_version (NULL) );
+
+  ksba_set_malloc_hooks (gcry_malloc, gcry_realloc, gcry_free );
+  ksba_set_hash_buffer_function (my_ksba_hash_buffer, NULL);
+
+  /* Init TLS library.  */
+#if HTTP_USE_NTBTLS
+  if (!ntbtls_check_version (NEED_NTBTLS_VERSION) )
+    log_fatal( _("%s is too old (need %s, have %s)\n"), "ntbtls",
+               NEED_NTBTLS_VERSION, ntbtls_check_version (NULL) );
+#elif HTTP_USE_GNUTLS
+  rc = gnutls_global_init ();
+  if (rc)
+    log_fatal ("gnutls_global_init failed: %s\n", gnutls_strerror (rc));
+#endif /*HTTP_USE_GNUTLS*/
+
+  /* Init Assuan. */
+  malloc_hooks.malloc = gcry_malloc;
+  malloc_hooks.realloc = gcry_realloc;
+  malloc_hooks.free = gcry_free;
+  assuan_set_malloc_hooks (&malloc_hooks);
+  assuan_set_assuan_log_prefix (log_get_prefix (NULL));
+  assuan_set_gpg_err_source (GPG_ERR_SOURCE_DEFAULT);
+  assuan_sock_init ();
+  setup_libassuan_logging (&opt.debug, dirmngr_assuan_log_monitor);
+
+  setup_libgcrypt_logging ();
+
+#if HTTP_USE_NTBTLS
+  ntbtls_set_log_handler (my_ntbtls_log_handler, NULL);
+#endif
+
+  /* Setup defaults. */
+  shell = getenv ("SHELL");
+  if (shell && strlen (shell) >= 3 && !strcmp (shell+strlen (shell)-3, "csh") )
+    csh_style = 1;
+
+  /* Reset rereadable options to default values. */
+  parse_rereadable_options (NULL, 0);
+
+  /* Default TCP timeouts.  */
+  opt.connect_timeout = DEFAULT_CONNECT_TIMEOUT;
+  opt.connect_quick_timeout = DEFAULT_CONNECT_QUICK_TIMEOUT;
+
+  /* LDAP defaults.  */
+  opt.add_new_ldapservers = 0;
+  opt.ldaptimeout = DEFAULT_LDAP_TIMEOUT;
+
+  /* Other defaults.  */
+
+  /* Check whether we have a config file given on the commandline */
+  orig_argc = argc;
+  orig_argv = argv;
+  pargs.argc = &argc;
+  pargs.argv = &argv;
+  pargs.flags= (ARGPARSE_FLAG_KEEP | ARGPARSE_FLAG_NOVERSION);
+  while (gnupg_argparse (NULL, &pargs, opts))
+    {
+      switch (pargs.r_opt)
+        {
+        case oDebug:
+        case oDebugAll:
+          debug_argparser++;
+          break;
+        case oHomedir:
+          gnupg_set_homedir (pargs.r.ret_str);
+          break;
+        }
+    }
+  /* Reset the flags.  */
+  pargs.flags &= ~(ARGPARSE_FLAG_KEEP | ARGPARSE_FLAG_NOVERSION);
+
+  socket_name = dirmngr_socket_name ();
+
+  /* The configuraton directories for use by gpgrt_argparser.  */
+  gnupg_set_confdir (GNUPG_CONFDIR_SYS, gnupg_sysconfdir ());
+  gnupg_set_confdir (GNUPG_CONFDIR_USER, gnupg_homedir ());
+
+  /* We are re-using the struct, thus the reset flag.  We OR the
+   * flags so that the internal intialized flag won't be cleared. */
+  argc = orig_argc;
+  argv = orig_argv;
+  pargs.argc = &argc;
+  pargs.argv = &argv;
+  pargs.flags |=  (ARGPARSE_FLAG_RESET
+                   | ARGPARSE_FLAG_KEEP
+                   | ARGPARSE_FLAG_SYS
+                   | ARGPARSE_FLAG_USER);
+  while (gnupg_argparser (&pargs, opts, DIRMNGR_NAME EXTSEP_S "conf"))
+    {
+      if (pargs.r_opt == ARGPARSE_CONFFILE)
+        {
+          if (debug_argparser)
+            log_info (_("reading options from '%s'\n"),
+                      pargs.r_type? pargs.r.ret_str: "[cmdline]");
+          if (pargs.r_type)
+            {
+              xfree (last_configname);
+              last_configname = xstrdup (pargs.r.ret_str);
+              configname = last_configname;
+            }
+          else
+            configname = NULL;
+          continue;
+        }
+      if (parse_rereadable_options (&pargs, 0))
+        continue; /* Already handled */
+      switch (pargs.r_opt)
+        {
+        case aServer:
+        case aDaemon:
+        case aSupervised:
+        case aShutdown:
+        case aFlush:
+	case aListCRLs:
+	case aLoadCRL:
+        case aFetchCRL:
+	case aGPGConfList:
+	case aGPGConfTest:
+	case aGPGConfVersions:
+          cmd = pargs.r_opt;
+          break;
+
+        case oQuiet: opt.quiet = 1; break;
+        case oVerbose: opt.verbose++; break;
+        case oBatch: opt.batch=1; break;
+
+        case oDebugWait: debug_wait = pargs.r.ret_int; break;
+
+        case oNoGreeting: nogreeting = 1; break;
+        case oNoVerbose: opt.verbose = 0; break;
+        case oHomedir: /* Ignore this option here. */; break;
+        case oNoDetach: nodetach = 1; break;
+        case oStealSocket: steal_socket = 1; break;
+        case oLogFile: logfile = pargs.r.ret_str; break;
+        case oCsh: csh_style = 1; break;
+        case oSh: csh_style = 0; break;
+	case oLDAPFile:
+#        if USE_LDAP
+          ldapfile = pargs.r.ret_str;
+#        endif /*USE_LDAP*/
+          break;
+	case oLDAPAddServers: opt.add_new_ldapservers = 1; break;
+
+        case oFakedSystemTime:
+          gnupg_set_time ((time_t)pargs.r.ret_ulong, 0);
+          break;
+
+        case oForce: opt.force = 1; break;
+
+        case oSocketName: socket_name = pargs.r.ret_str; break;
+
+        case oListenBacklog:
+          listen_backlog = pargs.r.ret_int;
+          break;
+
+        default:
+          if (configname)
+            pargs.err = ARGPARSE_PRINT_WARNING;
+          else
+            pargs.err = ARGPARSE_PRINT_ERROR;
+          break;
+	}
+    }
+  gnupg_argparse (NULL, &pargs, NULL);  /* Release internal state.  */
+
+  if (!last_configname)
+    opt.config_filename = make_filename (gnupg_homedir (),
+                                         DIRMNGR_NAME EXTSEP_S "conf",
+                                         NULL);
+  else
+    {
+      opt.config_filename = last_configname;
+      last_configname = NULL;
+    }
+
+  if (log_get_errorcount(0))
+    exit(2);
+  if (nogreeting )
+    greeting = 0;
+
+  if (!opt.homedir_cache)
+    opt.homedir_cache = xstrdup (gnupg_homedir ());
+
+  if (greeting)
+    {
+      es_fprintf (es_stderr, "%s %s; %s\n",
+                  strusage(11), strusage(13), strusage(14) );
+      es_fprintf (es_stderr, "%s\n", strusage(15) );
+    }
+
+#ifdef IS_DEVELOPMENT_VERSION
+  log_info ("NOTE: this is a development version!\n");
+#endif
+
+  /* Print a warning if an argument looks like an option.  */
+  if (!opt.quiet && !(pargs.flags & ARGPARSE_FLAG_STOP_SEEN))
+    {
+      int i;
+
+      for (i=0; i < argc; i++)
+        if (argv[i][0] == '-' && argv[i][1] == '-')
+          log_info (_("Note: '%s' is not considered an option\n"), argv[i]);
+    }
+
+  if (!gnupg_access ("/etc/"DIRMNGR_NAME, F_OK)
+      && !strncmp (gnupg_homedir (), "/etc/", 5))
+    log_info
+      ("NOTE: DirMngr is now a proper part of %s.  The configuration and"
+       " other directory names changed.  Please check that no other version"
+       " of dirmngr is still installed.  To disable this warning, remove the"
+       " directory '/etc/dirmngr'.\n", GNUPG_NAME);
+
+  if (gnupg_faked_time_p ())
+    {
+      gnupg_isotime_t tbuf;
+
+      log_info (_("WARNING: running with faked system time: "));
+      gnupg_get_isotime (tbuf);
+      dump_isotime (tbuf);
+      log_printf ("\n");
+    }
+
+  post_option_parsing ();
+
+  /* Get LDAP server list from file unless --ldapserver has been used.  */
+#if USE_LDAP
+  if (opt.ldapservers)
+    ;
+  else if (!ldapfile)
+    {
+      ldapfile = make_filename (gnupg_homedir (),
+                                "dirmngr_ldapservers.conf",
+                                NULL);
+      opt.ldapservers = parse_ldapserver_file (ldapfile, 1);
+      xfree (ldapfile);
+    }
+  else
+    opt.ldapservers = parse_ldapserver_file (ldapfile, 0);
+#endif /*USE_LDAP*/
+
+#ifndef HAVE_W32_SYSTEM
+  /* We need to ignore the PIPE signal because the we might log to a
+     socket and that code handles EPIPE properly.  The ldap wrapper
+     also requires us to ignore this silly signal. Assuan would set
+     this signal to ignore anyway.*/
+  signal (SIGPIPE, SIG_IGN);
+#endif
+
+  /* Ready.  Now to our duties. */
+  if (!cmd)
+    cmd = aServer;
+  rc = 0;
+
+  if (cmd == aServer)
+    {
+      /* Note that this server mode is mainly useful for debugging.  */
+      if (argc)
+        wrong_args ("--server");
+
+      if (logfile)
+        {
+          log_set_file (logfile);
+          log_set_prefix (NULL, GPGRT_LOG_WITH_TIME | GPGRT_LOG_WITH_PID);
+        }
+
+      if (debug_wait)
+        {
+          log_debug ("waiting for debugger - my pid is %u .....\n",
+                     (unsigned int)getpid());
+          gnupg_sleep (debug_wait);
+          log_debug ("... okay\n");
+        }
+
+
+      thread_init ();
+      cert_cache_init (hkp_cacert_filenames);
+      crl_cache_init ();
+      http_register_netactivity_cb (netactivity_action);
+      start_command_handler (ASSUAN_INVALID_FD, 0);
+      shutdown_reaper ();
+    }
+#ifndef HAVE_W32_SYSTEM
+  else if (cmd == aSupervised)
+    {
+      /* In supervised mode, we expect file descriptor 3 to be an
+         already opened, listening socket.
+
+         We will also not detach from the controlling process or close
+         stderr; the supervisor should handle all of that.  */
+      struct stat statbuf;
+      if (fstat (3, &statbuf) == -1 && errno == EBADF)
+        {
+          log_error ("file descriptor 3 must be validin --supervised mode\n");
+          dirmngr_exit (1);
+        }
+      socket_name = gnupg_get_socket_name (3);
+
+      /* Now start with logging to a file if this is desired. */
+      if (logfile)
+        {
+          log_set_file (logfile);
+          log_set_prefix (NULL, (GPGRT_LOG_WITH_PREFIX
+                                 |GPGRT_LOG_WITH_TIME
+                                 |GPGRT_LOG_WITH_PID));
+          current_logfile = xstrdup (logfile);
+        }
+      else
+        log_set_prefix (NULL, 0);
+
+      thread_init ();
+      cert_cache_init (hkp_cacert_filenames);
+      crl_cache_init ();
+      http_register_netactivity_cb (netactivity_action);
+      handle_connections (3);
+      shutdown_reaper ();
+    }
+#endif /*HAVE_W32_SYSTEM*/
+  else if (cmd == aDaemon)
+    {
+      assuan_fd_t fd;
+      pid_t pid;
+      int len;
+      struct sockaddr_un serv_addr;
+
+      if (argc)
+        wrong_args ("--daemon");
+
+      /* Now start with logging to a file if this is desired. */
+      if (logfile)
+        {
+          log_set_file (logfile);
+          log_set_prefix (NULL, (GPGRT_LOG_WITH_PREFIX
+                                 |GPGRT_LOG_WITH_TIME
+                                 |GPGRT_LOG_WITH_PID));
+          current_logfile = xstrdup (logfile);
+        }
+
+      if (debug_wait)
+        {
+          log_debug ("waiting for debugger - my pid is %u .....\n",
+                     (unsigned int)getpid());
+          gnupg_sleep (debug_wait);
+          log_debug ("... okay\n");
+        }
+
+#ifndef HAVE_W32_SYSTEM
+      if (strchr (socket_name, ':'))
+        {
+          log_error (_("colons are not allowed in the socket name\n"));
+          dirmngr_exit (1);
+        }
+#endif
+      fd = assuan_sock_new (AF_UNIX, SOCK_STREAM, 0);
+      if (fd == ASSUAN_INVALID_FD)
+        {
+          log_error (_("can't create socket: %s\n"), strerror (errno));
+          cleanup ();
+          dirmngr_exit (1);
+        }
+
+      {
+        int redirected;
+
+        if (assuan_sock_set_sockaddr_un (socket_name,
+                                         (struct sockaddr*)&serv_addr,
+                                         &redirected))
+          {
+            if (errno == ENAMETOOLONG)
+              log_error (_("socket name '%s' is too long\n"), socket_name);
+            else
+              log_error ("error preparing socket '%s': %s\n",
+                         socket_name,
+                         gpg_strerror (gpg_error_from_syserror ()));
+            dirmngr_exit (1);
+          }
+        if (redirected)
+          {
+            redir_socket_name = xstrdup (serv_addr.sun_path);
+            if (opt.verbose)
+              log_info ("redirecting socket '%s' to '%s'\n",
+                        socket_name, redir_socket_name);
+          }
+      }
+
+      len = SUN_LEN (&serv_addr);
+
+      rc = assuan_sock_bind (fd, (struct sockaddr*) &serv_addr, len);
+      if (rc == -1
+          && (errno == EADDRINUSE
+#ifdef HAVE_W32_SYSTEM
+              || errno == EEXIST
+#endif
+              ))
+	{
+          /* Fixme: We should actually test whether a dirmngr is
+           * already running.  For now the steal option is a dummy. */
+          /* if (steal_socket) */
+          /*   log_info (N_("trying to steal socket from running %s\n"), */
+          /*             "dirmngr"); */
+	  gnupg_remove (redir_socket_name? redir_socket_name : socket_name);
+	  rc = assuan_sock_bind (fd, (struct sockaddr*) &serv_addr, len);
+	}
+      if (rc != -1
+	  && (rc = assuan_sock_get_nonce ((struct sockaddr*) &serv_addr, len, &socket_nonce)))
+	log_error (_("error getting nonce for the socket\n"));
+      if (rc == -1)
+        {
+          log_error (_("error binding socket to '%s': %s\n"),
+                     serv_addr.sun_path,
+                     gpg_strerror (gpg_error_from_syserror ()));
+          assuan_sock_close (fd);
+          dirmngr_exit (1);
+        }
+      cleanup_socket = 1;
+
+      if (gnupg_chmod (serv_addr.sun_path, "-rwx"))
+        log_error (_("can't set permissions of '%s': %s\n"),
+                   serv_addr.sun_path, strerror (errno));
+
+      if (listen (FD2INT (fd), listen_backlog) == -1)
+        {
+          log_error ("listen(fd,%d) failed: %s\n",
+                     listen_backlog, strerror (errno));
+          assuan_sock_close (fd);
+          dirmngr_exit (1);
+        }
+
+      if (opt.verbose)
+        log_info (_("listening on socket '%s'\n"), serv_addr.sun_path);
+
+      es_fflush (NULL);
+
+      /* Note: We keep the dirmngr_info output only for the sake of
+         existing scripts which might use this to detect a successful
+         start of the dirmngr.  */
+#ifdef HAVE_W32_SYSTEM
+      (void)csh_style;
+      (void)nodetach;
+
+      pid = getpid ();
+      es_printf ("set %s=%s;%lu;1\n",
+                 DIRMNGR_INFO_NAME, socket_name, (ulong) pid);
+#else
+      pid = fork();
+      if (pid == (pid_t)-1)
+        {
+          log_fatal (_("error forking process: %s\n"), strerror (errno));
+          dirmngr_exit (1);
+        }
+
+      if (pid)
+        { /* We are the parent */
+          char *infostr;
+
+          /* Don't let cleanup() remove the socket - the child is
+             responsible for doing that.  */
+          cleanup_socket = 0;
+
+          close (fd);
+
+          /* Create the info string: <name>:<pid>:<protocol_version> */
+          if (asprintf (&infostr, "%s=%s:%lu:1",
+                        DIRMNGR_INFO_NAME, serv_addr.sun_path, (ulong)pid ) < 0)
+            {
+              log_error (_("out of core\n"));
+              kill (pid, SIGTERM);
+              dirmngr_exit (1);
+            }
+          /* Print the environment string, so that the caller can use
+             shell's eval to set it.  But see above.  */
+          if (csh_style)
+            {
+              *strchr (infostr, '=') = ' ';
+              es_printf ( "setenv %s;\n", infostr);
+            }
+          else
+            {
+              es_printf ( "%s; export %s;\n", infostr, DIRMNGR_INFO_NAME);
+            }
+          free (infostr);
+          exit (0);
+          /*NEVER REACHED*/
+        } /* end parent */
+
+
+      /*
+         This is the child
+       */
+
+      /* Detach from tty and put process into a new session */
+      if (!nodetach )
+        {
+          int i;
+          unsigned int oldflags;
+
+          /* Close stdin, stdout and stderr unless it is the log stream */
+          for (i=0; i <= 2; i++)
+            {
+              if (!log_test_fd (i) && i != fd )
+                {
+                  if ( !close (i)
+                       && open ("/dev/null", i? O_WRONLY : O_RDONLY) == -1)
+                    {
+                      log_error ("failed to open '%s': %s\n",
+                                 "/dev/null", strerror (errno));
+                      cleanup ();
+                      dirmngr_exit (1);
+                    }
+                }
+            }
+
+          if (setsid() == -1)
+            {
+              log_error ("setsid() failed: %s\n", strerror(errno) );
+              dirmngr_exit (1);
+            }
+
+          log_get_prefix (&oldflags);
+          log_set_prefix (NULL, oldflags | GPGRT_LOG_RUN_DETACHED);
+          opt.running_detached = 1;
+
+        }
+#endif
+
+      if (!nodetach )
+        {
+          if (gnupg_chdir (gnupg_daemon_rootdir ()))
+            {
+              log_error ("chdir to '%s' failed: %s\n",
+                         gnupg_daemon_rootdir (), strerror (errno));
+              dirmngr_exit (1);
+            }
+        }
+
+      thread_init ();
+      cert_cache_init (hkp_cacert_filenames);
+      crl_cache_init ();
+      http_register_netactivity_cb (netactivity_action);
+      handle_connections (fd);
+      shutdown_reaper ();
+    }
+  else if (cmd == aListCRLs)
+    {
+      /* Just list the CRL cache and exit. */
+      if (argc)
+        wrong_args ("--list-crls");
+      crl_cache_init ();
+      crl_cache_list (es_stdout);
+    }
+  else if (cmd == aLoadCRL)
+    {
+      struct server_control_s ctrlbuf;
+
+      memset (&ctrlbuf, 0, sizeof ctrlbuf);
+      dirmngr_init_default_ctrl (&ctrlbuf);
+
+      thread_init ();
+      cert_cache_init (hkp_cacert_filenames);
+      crl_cache_init ();
+      if (!argc)
+        rc = crl_cache_load (&ctrlbuf, NULL);
+      else
+        {
+          for (; !rc && argc; argc--, argv++)
+            rc = crl_cache_load (&ctrlbuf, *argv);
+        }
+      dirmngr_deinit_default_ctrl (&ctrlbuf);
+    }
+  else if (cmd == aFetchCRL)
+    {
+      ksba_reader_t reader;
+      struct server_control_s ctrlbuf;
+
+      if (argc != 1)
+        wrong_args ("--fetch-crl URL");
+
+      memset (&ctrlbuf, 0, sizeof ctrlbuf);
+      dirmngr_init_default_ctrl (&ctrlbuf);
+
+      thread_init ();
+      cert_cache_init (hkp_cacert_filenames);
+      crl_cache_init ();
+      rc = crl_fetch (&ctrlbuf, argv[0], &reader);
+      if (rc)
+        log_error (_("fetching CRL from '%s' failed: %s\n"),
+                     argv[0], gpg_strerror (rc));
+      else
+        {
+          rc = crl_cache_insert (&ctrlbuf, argv[0], reader);
+          if (rc)
+            log_error (_("processing CRL from '%s' failed: %s\n"),
+                       argv[0], gpg_strerror (rc));
+          crl_close_reader (reader);
+        }
+      dirmngr_deinit_default_ctrl (&ctrlbuf);
+    }
+  else if (cmd == aFlush)
+    {
+      /* Delete cache and exit. */
+      if (argc)
+        wrong_args ("--flush");
+      rc = crl_cache_flush();
+    }
+  else if (cmd == aGPGConfTest)
+    dirmngr_exit (0);
+  else if (cmd == aGPGConfList)
+    {
+      unsigned long flags = 0;
+      char *filename_esc;
+
+      es_printf ("debug-level:%lu:\"none\n", flags | GC_OPT_FLAG_DEFAULT);
+      es_printf ("ldaptimeout:%lu:%u\n",
+                 flags | GC_OPT_FLAG_DEFAULT, DEFAULT_LDAP_TIMEOUT);
+      es_printf ("max-replies:%lu:%u\n",
+                 flags | GC_OPT_FLAG_DEFAULT, DEFAULT_MAX_REPLIES);
+
+      filename_esc = percent_escape (get_default_keyserver (0), NULL);
+      es_printf ("keyserver:%lu:\"%s:\n", flags | GC_OPT_FLAG_DEFAULT,
+                 filename_esc);
+      xfree (filename_esc);
+
+      es_printf ("resolver-timeout:%lu:%u\n",
+                 flags | GC_OPT_FLAG_DEFAULT, 0);
+    }
+  else if (cmd == aGPGConfVersions)
+    gpgconf_versions ();
+
+  cleanup ();
+  return !!rc;
+}
+
+
+static void
+cleanup (void)
+{
+  crl_cache_deinit ();
+  cert_cache_deinit (1);
+  reload_dns_stuff (1);
+
+#if USE_LDAP
+  ldapserver_list_free (opt.ldapservers);
+#endif /*USE_LDAP*/
+  opt.ldapservers = NULL;
+
+  if (cleanup_socket)
+    {
+      cleanup_socket = 0;
+      if (redir_socket_name)
+        gnupg_remove (redir_socket_name);
+      else if (socket_name && *socket_name)
+        gnupg_remove (socket_name);
+    }
+}
+
+
+void
+dirmngr_exit (int rc)
+{
+  cleanup ();
+  exit (rc);
+}
+
+
+void
+dirmngr_init_default_ctrl (ctrl_t ctrl)
+{
+  ctrl->magic = SERVER_CONTROL_MAGIC;
+  if (opt.http_proxy)
+    ctrl->http_proxy = xstrdup (opt.http_proxy);
+  ctrl->http_no_crl = 1;
+  ctrl->timeout = opt.connect_timeout;
+}
+
+
+void
+dirmngr_deinit_default_ctrl (ctrl_t ctrl)
+{
+  if (!ctrl)
+    return;
+  ctrl->magic = 0xdeadbeef;
+
+  xfree (ctrl->http_proxy);
+  ctrl->http_proxy = NULL;
+}
+
+
+/* Create a list of LDAP servers from the file FILENAME. Returns the
+   list or NULL in case of errors.
+
+   The format fo such a file is line oriented where empty lines and
+   lines starting with a hash mark are ignored.  All other lines are
+   assumed to be colon seprated with these fields:
+
+   1. field: Hostname
+   2. field: Portnumber
+   3. field: Username
+   4. field: Password
+   5. field: Base DN
+
+*/
+#if USE_LDAP
+static ldap_server_t
+parse_ldapserver_file (const char* filename, int ignore_enoent)
+{
+  char buffer[1024];
+  char *p;
+  ldap_server_t server, serverstart, *serverend;
+  int c;
+  unsigned int lineno = 0;
+  estream_t fp;
+
+  fp = es_fopen (filename, "r");
+  if (!fp)
+    {
+      if (errno == ENOENT)
+        {
+          if (!ignore_enoent)
+            log_info ("No ldapserver file at: '%s'\n", filename);
+        }
+      else
+        log_error (_("error opening '%s': %s\n"), filename,
+                   strerror (errno));
+      return NULL;
+    }
+
+  serverstart = NULL;
+  serverend = &serverstart;
+  while (es_fgets (buffer, sizeof buffer, fp))
+    {
+      lineno++;
+      if (!*buffer || buffer[strlen(buffer)-1] != '\n')
+        {
+          if (*buffer && es_feof (fp))
+            ; /* Last line not terminated - continue. */
+          else
+            {
+              log_error (_("%s:%u: line too long - skipped\n"),
+                         filename, lineno);
+              while ( (c=es_fgetc (fp)) != EOF && c != '\n')
+                ; /* Skip until end of line. */
+              continue;
+            }
+        }
+      /* Skip empty and comment lines.*/
+      for (p=buffer; spacep (p); p++)
+        ;
+      if (!*p || *p == '\n' || *p == '#')
+        continue;
+
+      /* Parse the colon separated fields. */
+      server = ldapserver_parse_one (buffer, filename, lineno);
+      if (server)
+        {
+          *serverend = server;
+          serverend = &server->next;
+        }
+    }
+
+  if (es_ferror (fp))
+    log_error (_("error reading '%s': %s\n"), filename, strerror (errno));
+  es_fclose (fp);
+
+  return serverstart;
+}
+#endif /*USE_LDAP*/
+
+
+/* Parse a fingerprint entry as used by --ocsc-signer.  OPTIONNAME as
+ * a description on the options used.  WANT_BINARY requests to store a
+ * binary fingerprint.  Returns NULL on error and logs that error. */
+static fingerprint_list_t
+parse_fingerprint_item (const char *string,
+                        const char *optionname, int want_binary)
+{
+  gpg_error_t err;
+  char *fname;
+  estream_t fp;
+  char line[256];
+  char *p;
+  fingerprint_list_t list, *list_tail, item;
+  unsigned int lnr = 0;
+  int c, i, j;
+  int errflag = 0;
+
+
+  /* Check whether this is not a filename and treat it as a direct
+     fingerprint specification.  */
+  if (!strpbrk (string, "/.~\\"))
+    {
+      item = xcalloc (1, sizeof *item);
+      for (i=j=0; (string[i] == ':' || hexdigitp (string+i)) && j < 40; i++)
+        if ( string[i] != ':' )
+          item->hexfpr[j++] = string[i] >= 'a'? (string[i] & 0xdf): string[i];
+      item->hexfpr[j] = 0;
+      if (j != 40 || !(spacep (string+i) || !string[i]))
+        {
+          log_error (_("%s:%u: invalid fingerprint detected\n"),
+                     optionname, 0);
+          xfree (item);
+          return NULL;
+        }
+      if (want_binary)
+        {
+          item->binlen = 20;
+          hex2bin (item->hexfpr, item->hexfpr, 20);
+        }
+      return item;
+    }
+
+  /* Well, it is a filename.  */
+  if (*string == '/' || (*string == '~' && string[1] == '/'))
+    fname = make_filename (string, NULL);
+  else
+    {
+      if (string[0] == '.' && string[1] == '/' )
+        string += 2;
+      fname = make_filename (gnupg_homedir (), string, NULL);
+    }
+
+  fp = es_fopen (fname, "r");
+  if (!fp)
+    {
+      err = gpg_error_from_syserror ();
+      log_error (_("can't open '%s': %s\n"), fname, gpg_strerror (err));
+      xfree (fname);
+      return NULL;
+    }
+
+  list = NULL;
+  list_tail = &list;
+  for (;;)
+    {
+      if (!es_fgets (line, DIM(line)-1, fp) )
+        {
+          if (!es_feof (fp))
+            {
+              err = gpg_error_from_syserror ();
+              log_error (_("%s:%u: read error: %s\n"),
+                         fname, lnr, gpg_strerror (err));
+              errflag = 1;
+            }
+          es_fclose (fp);
+          if (errflag)
+            {
+              while (list)
+                {
+                  fingerprint_list_t tmp = list->next;
+                  xfree (list);
+                  list = tmp;
+                }
+            }
+          xfree (fname);
+          return list; /* Ready.  */
+        }
+
+      lnr++;
+      if (!*line || line[strlen(line)-1] != '\n')
+        {
+          /* Eat until end of line. */
+          while ( (c=es_getc (fp)) != EOF && c != '\n')
+            ;
+          err = gpg_error (*line? GPG_ERR_LINE_TOO_LONG
+                           /* */: GPG_ERR_INCOMPLETE_LINE);
+          log_error (_("%s:%u: read error: %s\n"),
+                     fname, lnr, gpg_strerror (err));
+          errflag = 1;
+          continue;
+        }
+
+      /* Allow for empty lines and spaces */
+      for (p=line; spacep (p); p++)
+        ;
+      if (!*p || *p == '\n' || *p == '#')
+        continue;
+
+      item = xcalloc (1, sizeof *item);
+      *list_tail = item;
+      list_tail = &item->next;
+
+      for (i=j=0; (p[i] == ':' || hexdigitp (p+i)) && j < 40; i++)
+        if ( p[i] != ':' )
+          item->hexfpr[j++] = p[i] >= 'a'? (p[i] & 0xdf): p[i];
+      item->hexfpr[j] = 0;
+      if (j != 40 || !(spacep (p+i) || p[i] == '\n'))
+        {
+          log_error (_("%s:%u: invalid fingerprint detected\n"), fname, lnr);
+          errflag = 1;
+        }
+      else if (want_binary)
+        {
+          item->binlen = 20;
+          hex2bin (item->hexfpr, item->hexfpr, 20);
+        }
+
+      i++;
+      while (spacep (p+i))
+        i++;
+      if (p[i] && p[i] != '\n')
+        log_info (_("%s:%u: garbage at end of line ignored\n"), fname, lnr);
+    }
+  /*NOTREACHED*/
+}
+
+
+
+
+/*
+   Stuff used in daemon mode.
+ */
+
+
+
+/* Reread parts of the configuration.  Note, that this function is
+   obviously not thread-safe and should only be called from the NPTH
+   signal handler.
+
+   Fixme: Due to the way the argument parsing works, we create a
+   memory leak here for all string type arguments.  There is currently
+   no clean way to tell whether the memory for the argument has been
+   allocated or points into the process' original arguments.  Unless
+   we have a mechanism to tell this, we need to live on with this. */
+static void
+reread_configuration (void)
+{
+  ARGPARSE_ARGS pargs;
+  char *twopart;
+  int dummy;
+
+  if (!opt.config_filename)
+    return; /* No config file. */
+
+  twopart = strconcat (DIRMNGR_NAME EXTSEP_S "conf" PATHSEP_S,
+                       opt.config_filename, NULL);
+  if (!twopart)
+    return;  /* Out of core.  */
+
+  parse_rereadable_options (NULL, 1); /* Start from the default values. */
+
+  memset (&pargs, 0, sizeof pargs);
+  dummy = 0;
+  pargs.argc = &dummy;
+  pargs.flags = (ARGPARSE_FLAG_KEEP
+                 |ARGPARSE_FLAG_SYS
+                 |ARGPARSE_FLAG_USER);
+  while (gnupg_argparser (&pargs, opts, twopart))
+    {
+      if (pargs.r_opt == ARGPARSE_CONFFILE)
+        {
+          log_info (_("reading options from '%s'\n"),
+                    pargs.r_type? pargs.r.ret_str: "[cmdline]");
+        }
+      else if (pargs.r_opt < -1)
+        pargs.err = ARGPARSE_PRINT_WARNING;
+      else /* Try to parse this option - ignore unchangeable ones. */
+        parse_rereadable_options (&pargs, 1);
+    }
+  gnupg_argparse (NULL, &pargs, NULL);  /* Release internal state.  */
+  xfree (twopart);
+  post_option_parsing ();
+}
+
+
+/* A global function which allows us to trigger the reload stuff from
+   other places.  */
+void
+dirmngr_sighup_action (void)
+{
+  log_info (_("SIGHUP received - "
+              "re-reading configuration and flushing caches\n"));
+  reread_configuration ();
+  cert_cache_deinit (0);
+  crl_cache_deinit ();
+  cert_cache_init (hkp_cacert_filenames);
+  crl_cache_init ();
+  reload_dns_stuff (0);
+  ks_hkp_reload ();
+}
+
+
+/* This function is called if some network activity was done.  At this
+ * point we know the we have a network and we can decide whether to
+ * run scheduled background tasks soon.  The function should return
+ * quickly and only trigger actions for another thread. */
+static void
+netactivity_action (void)
+{
+  network_activity_seen = 1;
+}
+
+
+/* The signal handler. */
+#ifndef HAVE_W32_SYSTEM
+static void
+handle_signal (int signo)
+{
+  switch (signo)
+    {
+    case SIGHUP:
+      dirmngr_sighup_action ();
+      break;
+
+    case SIGUSR1:
+      cert_cache_print_stats ();
+      domaininfo_print_stats ();
+      break;
+
+    case SIGUSR2:
+      log_info (_("SIGUSR2 received - no action defined\n"));
+      break;
+
+    case SIGTERM:
+      if (!shutdown_pending)
+        log_info (_("SIGTERM received - shutting down ...\n"));
+      else
+        log_info (_("SIGTERM received - still %d active connections\n"),
+                  active_connections);
+      shutdown_pending++;
+      if (shutdown_pending > 2)
+        {
+          log_info (_("shutdown forced\n"));
+          log_info ("%s %s stopped\n", strusage(11), strusage(13) );
+          cleanup ();
+          dirmngr_exit (0);
+	}
+      break;
+
+    case SIGINT:
+      log_info (_("SIGINT received - immediate shutdown\n"));
+      log_info( "%s %s stopped\n", strusage(11), strusage(13));
+      cleanup ();
+      dirmngr_exit (0);
+      break;
+
+    default:
+      log_info (_("signal %d received - no action defined\n"), signo);
+    }
+}
+#endif /*!HAVE_W32_SYSTEM*/
+
+
+/* Thread to do the housekeeping.  */
+static void *
+housekeeping_thread (void *arg)
+{
+  static int sentinel;
+  time_t curtime;
+  struct server_control_s ctrlbuf;
+
+  (void)arg;
+
+  curtime = gnupg_get_time ();
+  if (sentinel)
+    {
+      log_info ("housekeeping is already going on\n");
+      return NULL;
+    }
+  sentinel++;
+  if (opt.verbose > 1)
+    log_info ("starting housekeeping\n");
+
+  memset (&ctrlbuf, 0, sizeof ctrlbuf);
+  dirmngr_init_default_ctrl (&ctrlbuf);
+
+  dns_stuff_housekeeping ();
+  ks_hkp_housekeeping (curtime);
+  if (network_activity_seen)
+    {
+      network_activity_seen = 0;
+      if (opt.allow_version_check)
+        dirmngr_load_swdb (&ctrlbuf, 0);
+      workqueue_run_global_tasks (&ctrlbuf, 1);
+    }
+  else
+    workqueue_run_global_tasks (&ctrlbuf, 0);
+
+  dirmngr_deinit_default_ctrl (&ctrlbuf);
+
+  if (opt.verbose > 1)
+    log_info ("ready with housekeeping\n");
+  sentinel--;
+  return NULL;
+
+}
+
+
+#if GPGRT_GCC_HAVE_PUSH_PRAGMA
+# pragma GCC push_options
+# pragma GCC optimize ("no-strict-overflow")
+#endif
+static int
+time_for_housekeeping_p (time_t curtime)
+{
+  static time_t last_housekeeping;
+
+  if (!last_housekeeping)
+    last_housekeeping = curtime;
+
+  if (last_housekeeping + HOUSEKEEPING_INTERVAL <= curtime
+      || last_housekeeping > curtime /*(be prepared for y2038)*/)
+    {
+      last_housekeeping = curtime;
+      return 1;
+    }
+  return 0;
+}
+#if GPGRT_GCC_HAVE_PUSH_PRAGMA
+# pragma GCC pop_options
+#endif
+
+
+/* This is the worker for the ticker.  It is called every few seconds
+   and may only do fast operations. */
+static void
+handle_tick (void)
+{
+  struct stat statbuf;
+
+  if (time_for_housekeeping_p (gnupg_get_time ()))
+    {
+      npth_t thread;
+      npth_attr_t tattr;
+      int err;
+
+      err = npth_attr_init (&tattr);
+      if (err)
+        log_error ("error preparing housekeeping thread: %s\n", strerror (err));
+      else
+        {
+          npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
+          err = npth_create (&thread, &tattr, housekeeping_thread, NULL);
+          if (err)
+            log_error ("error spawning housekeeping thread: %s\n",
+                       strerror (err));
+          npth_attr_destroy (&tattr);
+        }
+    }
+
+  /* Check whether the homedir is still available.  */
+  if (!shutdown_pending
+      && gnupg_stat (gnupg_homedir (), &statbuf) && errno == ENOENT)
+    {
+      shutdown_pending = 1;
+      log_info ("homedir has been removed - shutting down\n");
+    }
+}
+
+
+/* Check the nonce on a new connection.  This is a NOP unless we are
+   using our Unix domain socket emulation under Windows.  */
+static int
+check_nonce (assuan_fd_t fd, assuan_sock_nonce_t *nonce)
+{
+  if (assuan_sock_check_nonce (fd, nonce))
+    {
+      log_info (_("error reading nonce on fd %d: %s\n"),
+                FD2INT (fd), strerror (errno));
+      assuan_sock_close (fd);
+      return -1;
+    }
+  else
+    return 0;
+}
+
+
+/* Helper to call a connection's main function. */
+static void *
+start_connection_thread (void *arg)
+{
+  static unsigned int last_session_id;
+  unsigned int session_id;
+  union int_and_ptr_u argval;
+  gnupg_fd_t fd;
+
+  memset (&argval, 0, sizeof argval);
+  argval.aptr = arg;
+  fd = argval.afd;
+
+  if (check_nonce (fd, &socket_nonce))
+    {
+      log_error ("handler nonce check FAILED\n");
+      return NULL;
+    }
+
+#ifndef HAVE_W32_SYSTEM
+  npth_setspecific (my_tlskey_current_fd, argval.aptr);
+#endif
+
+  active_connections++;
+  if (opt.verbose)
+    log_info (_("handler for fd %d started\n"), FD2INT (fd));
+
+  session_id = ++last_session_id;
+  if (!session_id)
+    session_id = ++last_session_id;
+  start_command_handler (fd, session_id);
+
+  if (opt.verbose)
+    log_info (_("handler for fd %d terminated\n"), FD2INT (fd));
+  active_connections--;
+
+  workqueue_run_post_session_tasks (session_id);
+
+#ifndef HAVE_W32_SYSTEM
+  argval.afd = ASSUAN_INVALID_FD;
+  npth_setspecific (my_tlskey_current_fd, argval.aptr);
+#endif
+
+  return NULL;
+}
+
+
+#ifdef HAVE_INOTIFY_INIT
+/* Read an inotify event and return true if it matches NAME.  */
+static int
+my_inotify_is_name (int fd, const char *name)
+{
+  union {
+    struct inotify_event ev;
+    char _buf[sizeof (struct inotify_event) + 100 + 1];
+  } buf;
+  int n;
+  const char *s;
+
+  s = strrchr (name, '/');
+  if (s && s[1])
+    name = s + 1;
+
+  n = npth_read (fd, &buf, sizeof buf);
+  if (n < sizeof (struct inotify_event))
+    return 0;
+  if (buf.ev.len < strlen (name)+1)
+    return 0;
+  if (strcmp (buf.ev.name, name))
+    return 0; /* Not the desired file.  */
+
+  return 1; /* Found.  */
+}
+#endif /*HAVE_INOTIFY_INIT*/
+
+
+/* Main loop in daemon mode.  Note that LISTEN_FD will be owned by
+ * this function. */
+static void
+handle_connections (assuan_fd_t listen_fd)
+{
+  npth_attr_t tattr;
+#ifndef HAVE_W32_SYSTEM
+  int signo;
+#endif
+  struct sockaddr_un paddr;
+  socklen_t plen = sizeof( paddr );
+  int nfd, ret;
+  fd_set fdset, read_fdset;
+  struct timespec abstime;
+  struct timespec curtime;
+  struct timespec timeout;
+  int saved_errno;
+  int my_inotify_fd = -1;
+
+  npth_attr_init (&tattr);
+  npth_attr_setdetachstate (&tattr, NPTH_CREATE_DETACHED);
+
+#ifndef HAVE_W32_SYSTEM /* FIXME */
+  npth_sigev_init ();
+  npth_sigev_add (SIGHUP);
+  npth_sigev_add (SIGUSR1);
+  npth_sigev_add (SIGUSR2);
+  npth_sigev_add (SIGINT);
+  npth_sigev_add (SIGTERM);
+  npth_sigev_fini ();
+#endif
+
+#ifdef HAVE_INOTIFY_INIT
+  if (disable_check_own_socket)
+    my_inotify_fd = -1;
+  else if ((my_inotify_fd = inotify_init ()) == -1)
+    log_info ("error enabling fast daemon termination: %s\n",
+              strerror (errno));
+  else
+    {
+      /* We need to watch the directory for the file because there
+       * won't be an IN_DELETE_SELF for a socket file.  */
+      char *slash = strrchr (socket_name, '/');
+      log_assert (slash && slash[1]);
+      *slash = 0;
+      if (inotify_add_watch (my_inotify_fd, socket_name, IN_DELETE) == -1)
+        {
+          close (my_inotify_fd);
+          my_inotify_fd = -1;
+        }
+      *slash = '/';
+    }
+#endif /*HAVE_INOTIFY_INIT*/
+
+
+  /* Setup the fdset.  It has only one member.  This is because we use
+     pth_select instead of pth_accept to properly sync timeouts with
+     to full second.  */
+  FD_ZERO (&fdset);
+  FD_SET (FD2INT (listen_fd), &fdset);
+  nfd = FD2INT (listen_fd);
+  if (my_inotify_fd != -1)
+    {
+      FD_SET (my_inotify_fd, &fdset);
+      if (my_inotify_fd > nfd)
+        nfd = my_inotify_fd;
+    }
+
+  npth_clock_gettime (&abstime);
+  abstime.tv_sec += TIMERTICK_INTERVAL;
+
+  /* Main loop.  */
+  for (;;)
+    {
+      /* Shutdown test.  */
+      if (shutdown_pending)
+        {
+          if (!active_connections)
+            break; /* ready */
+
+          /* Do not accept new connections but keep on running the
+           * loop to cope with the timer events.
+           *
+           * Note that we do not close the listening socket because a
+           * client trying to connect to that socket would instead
+           * restart a new dirmngr instance - which is unlikely the
+           * intention of a shutdown. */
+          /* assuan_sock_close (listen_fd); */
+          /* listen_fd = -1; */
+          FD_ZERO (&fdset);
+          nfd = -1;
+          if (my_inotify_fd != -1)
+            {
+              FD_SET (my_inotify_fd, &fdset);
+              nfd = my_inotify_fd;
+            }
+	}
+
+      /* Take a copy of the fdset.  */
+      read_fdset = fdset;
+
+      npth_clock_gettime (&curtime);
+      if (!(npth_timercmp (&curtime, &abstime, <)))
+	{
+	  /* Timeout.  When a shutdown is pending we use a shorter
+           * interval to handle the shutdown more quickly.  */
+	  handle_tick ();
+	  npth_clock_gettime (&abstime);
+	  abstime.tv_sec += (shutdown_pending
+                             ? TIMERTICK_INTERVAL_SHUTDOWN
+                             : TIMERTICK_INTERVAL);
+	}
+      npth_timersub (&abstime, &curtime, &timeout);
+
+#ifndef HAVE_W32_SYSTEM
+      ret = npth_pselect (nfd+1, &read_fdset, NULL, NULL, &timeout,
+                          npth_sigev_sigmask());
+      saved_errno = errno;
+
+      while (npth_sigev_get_pending(&signo))
+	handle_signal (signo);
+#else
+      ret = npth_eselect (nfd+1, &read_fdset, NULL, NULL, &timeout, NULL, NULL);
+      saved_errno = errno;
+#endif
+
+      if (ret == -1 && saved_errno != EINTR)
+	{
+          log_error (_("npth_pselect failed: %s - waiting 1s\n"),
+                     strerror (saved_errno));
+          npth_sleep (1);
+          continue;
+	}
+
+      if (ret <= 0)
+        {
+          /* Interrupt or timeout.  Will be handled when calculating the
+             next timeout.  */
+          continue;
+        }
+
+      if (shutdown_pending)
+        {
+          /* Do not anymore accept connections.  */
+          continue;
+        }
+
+#ifdef HAVE_INOTIFY_INIT
+      if (my_inotify_fd != -1 && FD_ISSET (my_inotify_fd, &read_fdset)
+          && my_inotify_is_name (my_inotify_fd, socket_name))
+        {
+          shutdown_pending = 1;
+          log_info ("socket file has been removed - shutting down\n");
+        }
+#endif /*HAVE_INOTIFY_INIT*/
+
+      if (FD_ISSET (FD2INT (listen_fd), &read_fdset))
+	{
+          gnupg_fd_t fd;
+
+          plen = sizeof paddr;
+	  fd = INT2FD (npth_accept (FD2INT(listen_fd),
+				    (struct sockaddr *)&paddr, &plen));
+	  if (fd == GNUPG_INVALID_FD)
+	    {
+	      log_error ("accept failed: %s\n", strerror (errno));
+	    }
+          else
+            {
+              char threadname[50];
+              union int_and_ptr_u argval;
+	      npth_t thread;
+
+              memset (&argval, 0, sizeof argval);
+              argval.afd = fd;
+              snprintf (threadname, sizeof threadname,
+                        "conn fd=%d", FD2INT(fd));
+
+              ret = npth_create (&thread, &tattr,
+                                 start_connection_thread, argval.aptr);
+	      if (ret)
+                {
+                  log_error ("error spawning connection handler: %s\n",
+                             strerror (ret) );
+                  assuan_sock_close (fd);
+                }
+	      npth_setname_np (thread, threadname);
+            }
+	}
+    }
+
+#ifdef HAVE_INOTIFY_INIT
+  if (my_inotify_fd != -1)
+    close (my_inotify_fd);
+#endif /*HAVE_INOTIFY_INIT*/
+  npth_attr_destroy (&tattr);
+  if (listen_fd != GNUPG_INVALID_FD)
+    assuan_sock_close (listen_fd);
+  cleanup ();
+  log_info ("%s %s stopped\n", strusage(11), strusage(13));
+}
+
+const char*
+dirmngr_get_current_socket_name (void)
+{
+  if (socket_name)
+    return socket_name;
+  else
+    return dirmngr_socket_name ();
+}
+
+
+
+/* Parse the revision part from the extended version blurb.  */
+static const char *
+get_revision_from_blurb (const char *blurb, int *r_len)
+{
+  const char *s = blurb? blurb : "";
+  int n;
+
+  for (; *s; s++)
+    if (*s == '\n' && s[1] == '(')
+      break;
+  if (*s)
+    {
+      s += 2;
+      for (n=0; s[n] && s[n] != ' '; n++)
+        ;
+    }
+  else
+    {
+      s = "?";
+      n = 1;
+    }
+  *r_len = n;
+  return s;
+}
+
+
+/* Print versions of dirmngr and used libraries.  This is used by
+ * "gpgconf --show-versions" so that there is no need to link gpgconf
+ * against all these libraries.  This is an internal API and should
+ * not be relied upon.  */
+static void
+gpgconf_versions (void)
+{
+  const char *s;
+  int n;
+
+  /* Unfortunately Npth has no way to get the version.  */
+
+  s = get_revision_from_blurb (assuan_check_version ("\x01\x01"), &n);
+  es_fprintf (es_stdout, "* Libassuan %s (%.*s)\n\n",
+              assuan_check_version (NULL), n, s);
+
+  s = get_revision_from_blurb (ksba_check_version ("\x01\x01"), &n);
+  es_fprintf (es_stdout, "* KSBA %s (%.*s)\n\n",
+              ksba_check_version (NULL), n, s);
+
+#ifdef HTTP_USE_NTBTLS
+  s = get_revision_from_blurb (ntbtls_check_version ("\x01\x01"), &n);
+  es_fprintf (es_stdout, "* NTBTLS %s (%.*s)\n\n",
+              ntbtls_check_version (NULL), n, s);
+#elif HTTP_USE_GNUTLS
+  es_fprintf (es_stdout, "* GNUTLS %s\n\n",
+              gnutls_check_version (NULL));
+#endif
+
+}