Implemented the --gen-key command as we can't use the gpgsm-gencert.sh under Windows.

sm/certreqgen-ui.c

@@ -0,0 +1,317 @@
+/* certreqgen-ui.c - Simple user interface for certreqgen.c
+ * Copyright (C) 2007 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ * USA.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h> 
+#include <time.h>
+#include <assert.h>
+
+#include "gpgsm.h"
+#include <gcrypt.h>
+
+#include "i18n.h"
+#include "ttyio.h"
+#include "membuf.h"
+
+
+/* Prompt for lines and append them to MB.  */
+static void
+ask_mb_lines (membuf_t *mb, const char *prefix)
+{
+  char *answer = NULL;
+
+  do 
+    {
+      xfree (answer);
+      answer = tty_get ("> ");
+      tty_kill_prompt ();
+      trim_spaces (answer);
+      if (*answer)
+        {
+          put_membuf_str (mb, prefix);
+          put_membuf_str (mb, answer);
+          put_membuf (mb, "\n", 1);
+        }
+    }
+  while (*answer);
+  xfree (answer);
+}
+
+/* Helper to store stuff in a membuf.  */
+void
+store_key_value_lf (membuf_t *mb, const char *key, const char *value)
+{
+  put_membuf_str (mb, key);
+  put_membuf_str (mb, value);
+  put_membuf (mb, "\n", 1);
+}
+
+/* Helper tp store a membuf create by mb_ask_lines into MB.  Returns
+   -1 on error. */
+int
+store_mb_lines (membuf_t *mb, membuf_t *lines)
+{
+  char *p;
+
+  if (get_membuf_len (lines))
+    {
+      put_membuf (lines, "", 1);
+      p = get_membuf (lines, NULL);
+      if (!p)
+        return -1;
+      put_membuf_str (mb, p);
+      xfree (p);
+    }
+  return 0;
+}
+
+
+/* This function is used to create a certificate request from the
+   command line.  In the past the similar gpgsm-gencert.sh script has
+   been used for it; however that scripts requires a full Unix shell
+   and thus is not suitable for the Windows port.  So here is the
+   re-implementation.  */
+void
+gpgsm_gencertreq_tty (ctrl_t ctrl, FILE *output_fp)
+{
+  gpg_error_t err;
+  char *answer;
+  int selection;
+  FILE *fp = NULL;
+  int method;
+  char *keytype;
+  char *keygrip = NULL;
+  unsigned int nbits;
+  int minbits = 1024;
+  int maxbits = 4096;
+  int defbits = 2048;
+  const char *keyusage;
+  char *subject_name;
+  membuf_t mb_email, mb_dns, mb_uri, mb_result;
+  char *result = NULL;
+  int i;
+  const char *s, *s2;
+
+  init_membuf (&mb_email, 100);
+  init_membuf (&mb_dns, 100);
+  init_membuf (&mb_uri, 100);
+  init_membuf (&mb_result, 512);
+
+  /* Get the type of the key.  */
+  tty_printf (_("Please select what kind of key you want:\n"));
+  tty_printf (_("   (%d) RSA\n"), 1 );
+  tty_printf (_("   (%d) Existing key\n"), 2 );
+  tty_printf (_("   (%d) Existing key from card\n"), 3 );
+
+  do
+    {
+      answer = tty_get (_("Your selection? "));
+      tty_kill_prompt ();
+      selection = *answer? atoi (answer): 1;
+      xfree (answer);
+    }
+  while (!(selection >= 1 && selection <= 3));
+  method = selection;
+
+  /* Get  size of the key.  */
+  if (method == 1)
+    {
+      keytype = xstrdup ("RSA");
+      for (;;)
+        {
+          answer = tty_getf (_("What keysize do you want? (%u) "), defbits);
+          tty_kill_prompt ();
+          nbits = *answer? atoi (answer): defbits;
+          xfree (answer);
+          if (nbits < minbits || nbits > maxbits)
+            tty_printf(_("%s keysizes must be in the range %u-%u\n"),
+                         "RSA", minbits, maxbits);
+          else
+            break; /* Okay.  */
+        }
+      tty_printf (_("Requested keysize is %u bits\n"), nbits);
+      /* We round it up so that it better matches the word size.  */
+      if (( nbits % 64))
+        {
+          nbits = ((nbits + 63) / 64) * 64;
+          tty_printf (_("rounded up to %u bits\n"), nbits);
+        }
+    }
+  else if (method == 2)
+    {
+      tty_printf ("Not yet supported; "
+                  "use the gpgsm-gencert.sh script instead\n");
+      keytype = xstrdup ("RSA"); 
+      nbits = defbits; /* We need a dummy value.  */
+    }
+  else /* method == 3 */
+    {
+      tty_printf ("Not yet supported; "
+                  "use the gpgsm-gencert.sh script instead\n");
+      keytype = xstrdup ("card:foobar");
+      nbits = defbits; /* We need a dummy value.  */
+    }
+
+  /* Ask for the key usage.  */
+  tty_printf (_("Possible actions for a %s key:\n"), "RSA");
+  tty_printf (_("   (%d) sign, encrypt\n"), 1 );
+  tty_printf (_("   (%d) sign\n"), 2 );
+  tty_printf (_("   (%d) encrypt\n"), 3 );
+  do
+    {
+      answer = tty_get (_("Your selection? "));
+      tty_kill_prompt ();
+      selection = *answer? atoi (answer): 1;
+      xfree (answer);
+      switch (selection)
+        {
+        case 1: keyusage = "sign, encrypt"; break;
+        case 2: keyusage = "sign"; break;
+        case 3: keyusage = "encrypt"; break;
+        default: keyusage = NULL; break;
+        }
+    }
+  while (!keyusage);
+
+  /* Get the subject name.  */
+  answer = NULL;
+  do
+    {
+      size_t erroff, errlen;
+
+      xfree (answer);
+      answer = tty_get (_("Enter the X.509 subject name: "));
+      tty_kill_prompt ();
+      trim_spaces (answer);
+      if (!*answer)
+        tty_printf (_("No subject name given\n"));
+      else if ( (err = ksba_dn_teststr (answer, 0, &erroff, &errlen)) )
+        {
+          if (gpg_err_code (err) == GPG_ERR_UNKNOWN_NAME)
+            tty_printf (_("Invalid subject name label `%.*s'\n"),
+                        (int)errlen, answer+erroff);
+          else
+            {
+              /* TRANSLATORS: The 22 in the second string is the
+                 length of the first string up to the "%s".  Please
+                 adjust it do the length of your translation.  The
+                 second string is merely passed to atoi so you can
+                 drop everything after the number.  */
+              tty_printf (_("Invalid subject name `%s'\n"), answer);
+              tty_printf ("%*s^\n",
+                          atoi (_("22 translator: see "
+                                  "certreg-ui.c:gpgsm_gencertreq_tty"))
+                          + (int)erroff, "");
+            }
+          *answer = 0;
+        }
+    }
+  while (!*answer);
+  subject_name = answer;
+  answer = NULL;
+
+  /* Get the email addresses. */
+  tty_printf (_("Enter email addresses"));
+  tty_printf (_(" (end with an empty line):\n"));
+  ask_mb_lines (&mb_email, "Name-Email: ");
+
+  /* DNS names.  */
+  tty_printf (_("Enter DNS names"));
+  tty_printf (_(" (optional; end with an empty line):\n"));
+  ask_mb_lines (&mb_email, "Name-DNS: ");
+
+  /* URIs.  */
+  tty_printf (_("Enter URIs"));
+  tty_printf (_(" (optional; end with an empty line):\n"));
+  ask_mb_lines (&mb_email, "Name-URI: ");
+
+
+  /* Put it all together.  */
+  store_key_value_lf (&mb_result, "Key-Type: ", keytype);
+  {
+    char numbuf[30];
+    snprintf (numbuf, sizeof numbuf, "%u", nbits);
+    store_key_value_lf (&mb_result, "Key-Length: ", numbuf);
+  }
+  store_key_value_lf (&mb_result, "Key-Usage: ", keyusage);
+  store_key_value_lf (&mb_result, "Name-DN: ", subject_name);
+  if (keygrip)
+    store_key_value_lf (&mb_result, "Key-Grip: ", keygrip);
+  if (store_mb_lines (&mb_result, &mb_email))
+    goto mem_error;
+  if (store_mb_lines (&mb_result, &mb_dns))
+    goto mem_error;
+  if (store_mb_lines (&mb_result, &mb_uri))
+    goto mem_error;
+  put_membuf (&mb_result, "", 1);
+  result = get_membuf (&mb_result, NULL);
+  if (!result)
+    goto mem_error;
+
+  tty_printf (_("Parameters to be used for the certificate request:\n"));
+  for (s=result; (s2 = strchr (s, '\n')); s = s2+1, i++)
+    tty_printf ("    %.*s\n", (int)(s2-s), s);
+  tty_printf ("\n");
+
+
+  if (!tty_get_answer_is_yes ("Really create request? (y/N) "))
+     goto leave;
+
+  /* Now create a parameter file and generate the key.  */
+  fp = tmpfile ();
+  if (!fp)
+    {
+      log_error (_("error creating temporary file: %s\n"), strerror (errno));
+      goto leave;
+    }
+  fputs (result, fp);
+  rewind (fp);
+  tty_printf (_("Now creating certificate request.  "
+                "This may take a while ...\n"));
+  {
+    int save_pem = ctrl->create_pem;
+    ctrl->create_pem = 1; /* Force creation of PEM. */
+    err = gpgsm_genkey (ctrl, -1, fp, output_fp);
+    ctrl->create_pem = save_pem;
+  }
+  if (!err)
+    tty_printf (_("Ready.  You should now send this request to your CA.\n"));
+
+
+  goto leave;
+ mem_error:
+  log_error (_("resource problem: out or core\n"));
+ leave:
+  if (fp)
+    fclose (fp);
+  xfree (keytype);         
+  xfree (subject_name);
+  xfree (keygrip);
+  xfree (get_membuf (&mb_email, NULL));
+  xfree (get_membuf (&mb_dns, NULL));
+  xfree (get_membuf (&mb_uri, NULL));
+  xfree (get_membuf (&mb_result, NULL));
+  xfree (result);
+}