Adding upstream version 2.2.40.upstream/2.2.40upstream

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

1 files changed, 272 insertions, 0 deletions

diff --git a/agent/preset-passphrase.c b/agent/preset-passphrase.c
new file mode 100644
index 0000000..c5aeafe
--- /dev/null
+++ b/agent/preset-passphrase.c
@@ -0,0 +1,272 @@
+/* preset-passphrase.c - A tool to preset a passphrase.
+ *	Copyright (C) 2004 Free Software Foundation, Inc.
+ *
+ * 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 <sys/stat.h>
+#include <unistd.h>
+#ifdef HAVE_LOCALE_H
+#include <locale.h>
+#endif
+#ifdef HAVE_LANGINFO_CODESET
+#include <langinfo.h>
+#endif
+#ifdef HAVE_DOSISH_SYSTEM
+#include <fcntl.h> /* for setmode() */
+#endif
+#ifdef HAVE_W32_SYSTEM
+# ifdef HAVE_WINSOCK2_H
+#  include <winsock2.h>
+# endif
+# include <windows.h>  /* To initialize the sockets.  fixme */
+#endif
+
+#define INCLUDED_BY_MAIN_MODULE 1
+#include "agent.h"
+#include "../common/simple-pwquery.h"
+#include "../common/i18n.h"
+#include "../common/sysutils.h"
+#include "../common/init.h"
+
+
+enum cmd_and_opt_values
+{ aNull = 0,
+  oVerbose	  = 'v',
+  oPassphrase     = 'P',
+
+  oPreset         = 'c',
+  oForget         = 'f',
+
+  oNoVerbose = 500,
+
+  oHomedir,
+
+aTest };
+
+
+static const char *opt_passphrase;
+
+static ARGPARSE_OPTS opts[] = {
+
+  { 301, NULL, 0, N_("@Options:\n ") },
+
+  { oVerbose, "verbose",   0, "verbose" },
+  { oPassphrase, "passphrase", 2, "|STRING|use passphrase STRING" },
+  { oPreset,  "preset",   256, "preset passphrase"},
+  { oForget,  "forget",  256, "forget passphrase"},
+
+  { oHomedir, "homedir", 2, "@" },
+
+  ARGPARSE_end ()
+};
+
+
+static const char *
+my_strusage (int level)
+{
+  const char *p;
+  switch (level)
+    {
+    case  9: p = "GPL-3.0-or-later"; break;
+    case 11: p = "gpg-preset-passphrase (@GNUPG@)";
+      break;
+    case 13: p = VERSION; break;
+    case 14: p = GNUPG_DEF_COPYRIGHT_LINE; break;
+    case 17: p = PRINTABLE_OS_NAME; break;
+    case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
+
+    case 1:
+    case 40:
+      p =  _("Usage: gpg-preset-passphrase [options] KEYGRIP (-h for help)\n");
+      break;
+    case 41:
+      p = _("Syntax: gpg-preset-passphrase [options] KEYGRIP\n"
+                    "Password cache maintenance\n");
+    break;
+
+    default: p = NULL;
+    }
+  return p;
+}
+
+
+
+
+static void
+preset_passphrase (const char *keygrip)
+{
+  int  rc;
+  char *line;
+  /* FIXME: Use secure memory.  */
+  char passphrase[500];
+  char *passphrase_esc;
+
+  if (!opt_passphrase)
+    {
+      rc = read (0, passphrase, sizeof (passphrase) - 1);
+      if (rc < 0)
+        {
+          log_error ("reading passphrase failed: %s\n",
+                     gpg_strerror (gpg_error_from_syserror ()));
+          return;
+        }
+      passphrase[rc] = '\0';
+      line = strchr (passphrase, '\n');
+      if (line)
+        {
+          if (line > passphrase && line[-1] == '\r')
+            line--;
+          *line = '\0';
+        }
+
+      /* FIXME: How to handle empty passwords?  */
+    }
+
+  {
+    const char *s = opt_passphrase ? opt_passphrase : passphrase;
+    passphrase_esc = bin2hex (s, strlen (s), NULL);
+  }
+  if (!passphrase_esc)
+    {
+      log_error ("can not escape string: %s\n",
+		 gpg_strerror (gpg_error_from_syserror ()));
+      return;
+    }
+
+  rc = asprintf (&line, "PRESET_PASSPHRASE %s -1 %s\n", keygrip,
+		 passphrase_esc);
+  wipememory (passphrase_esc, strlen (passphrase_esc));
+  xfree (passphrase_esc);
+
+  if (rc < 0)
+    {
+      log_error ("caching passphrase failed: %s\n",
+		 gpg_strerror (gpg_error_from_syserror ()));
+      return;
+    }
+  if (!opt_passphrase)
+    wipememory (passphrase, sizeof (passphrase));
+
+  rc = simple_query (line);
+  if (rc)
+    {
+      log_error ("caching passphrase failed: %s\n", gpg_strerror (rc));
+      return;
+    }
+
+  wipememory (line, strlen (line));
+  xfree (line);
+}
+
+
+static void
+forget_passphrase (const char *keygrip)
+{
+  int rc;
+  char *line;
+
+  rc = asprintf (&line, "CLEAR_PASSPHRASE %s\n", keygrip);
+  if (rc < 0)
+    rc = gpg_error_from_syserror ();
+  else
+    rc = simple_query (line);
+  if (rc)
+    {
+      log_error ("clearing passphrase failed: %s\n", gpg_strerror (rc));
+      return;
+    }
+
+  xfree (line);
+}
+
+
+int
+main (int argc, char **argv)
+{
+  ARGPARSE_ARGS pargs;
+  int cmd = 0;
+  const char *keygrip = NULL;
+
+  early_system_init ();
+  set_strusage (my_strusage);
+  log_set_prefix ("gpg-preset-passphrase", GPGRT_LOG_WITH_PREFIX);
+
+  /* Make sure that our subsystems are ready.  */
+  i18n_init ();
+  init_common_subsystems (&argc, &argv);
+
+  pargs.argc = &argc;
+  pargs.argv = &argv;
+  pargs.flags= ARGPARSE_FLAG_KEEP;
+  while (gnupg_argparse (NULL, &pargs, opts))
+    {
+      switch (pargs.r_opt)
+        {
+        case oVerbose: opt.verbose++; break;
+        case oHomedir: gnupg_set_homedir (pargs.r.ret_str); break;
+
+        case oPreset: cmd = oPreset; break;
+        case oForget: cmd = oForget; break;
+        case oPassphrase: opt_passphrase = pargs.r.ret_str; break;
+
+        default : pargs.err = 2; break;
+	}
+    }
+  gnupg_argparse (NULL, &pargs, NULL);  /* Release internal state.  */
+  if (log_get_errorcount(0))
+    exit(2);
+
+  if (argc == 1)
+    keygrip = *argv;
+  else
+    usage (1);
+
+  /* Tell simple-pwquery about the standard socket name.  */
+  {
+    char *tmp = make_filename (gnupg_socketdir (), GPG_AGENT_SOCK_NAME, NULL);
+    simple_pw_set_socket (tmp);
+    xfree (tmp);
+  }
+
+  if (cmd == oPreset)
+    preset_passphrase (keygrip);
+  else if (cmd == oForget)
+    forget_passphrase (keygrip);
+  else
+    log_error ("one of the options --preset or --forget must be given\n");
+
+  agent_exit (0);
+  return 8; /*NOTREACHED*/
+}
+
+
+void
+agent_exit (int rc)
+{
+  rc = rc? rc : log_get_errorcount(0)? 2 : 0;
+  exit (rc);
+}