*** empty log message ***

1 files changed, 0 insertions, 773 deletions

diff --git a/sm/certpath.c b/sm/certpath.c
deleted file mode 100644
index d1fca2bf3..000000000
--- a/sm/certpath.c
+++ /dev/null
@@ -1,773 +0,0 @@
-/* certpath.c - certificate chain validation
- *	Copyright (C) 2001, 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <gcrypt.h>
-#include <ksba.h>
-
-#include "gpgsm.h"
-#include "keydb.h"
-#include "i18n.h"
-
-static int
-unknown_criticals (KsbaCert cert)
-{
-  static const char *known[] = {
-    "2.5.29.15", /* keyUsage */
-    "2.5.29.19", /* basic Constraints */
-    "2.5.29.32", /* certificatePolicies */
-    NULL
-  };
-  int rc = 0, i, idx, crit;
-  const char *oid;
-  KsbaError err;
-
-  for (idx=0; !(err=ksba_cert_get_extension (cert, idx,
-                                             &oid, &crit, NULL, NULL));idx++)
-    {
-      if (!crit)
-        continue;
-      for (i=0; known[i] && strcmp (known[i],oid); i++)
-        ;
-      if (!known[i])
-        {
-          log_error (_("critical certificate extension %s is not supported\n"),
-                     oid);
-          rc = GNUPG_Unsupported_Certificate;
-        }
-    }
-  if (err && err != -1)
-    rc = map_ksba_err (err);
-
-  return rc;
-}
-
-static int
-allowed_ca (KsbaCert cert, int *chainlen)
-{
-  KsbaError err;
-  int flag;
-
-  err = ksba_cert_is_ca (cert, &flag, chainlen);
-  if (err)
-    return map_ksba_err (err);
-  if (!flag)
-    {
-      log_error (_("issuer certificate is not marked as a CA\n"));
-      return GNUPG_Bad_CA_Certificate;
-    }
-  return 0;
-}
-
-
-static int
-check_cert_policy (KsbaCert cert)
-{
-  KsbaError err;
-  char *policies;
-  FILE *fp;
-  int any_critical;
-
-  err = ksba_cert_get_cert_policies (cert, &policies);
-  if (err == KSBA_No_Data)
-    return 0; /* no policy given */
-  if (err)
-    return map_ksba_err (err);
-
-  /* STRING is a line delimited list of certifiate policies as stored
-     in the certificate.  The line itself is colon delimited where the
-     first field is the OID of the policy and the second field either
-     N or C for normal or critical extension */
-
-  if (opt.verbose > 1)
-    log_info ("certificate's policy list: %s\n", policies);
-
-  /* The check is very minimal but won't give false positives */
-  any_critical = !!strstr (policies, ":C");
-
-  if (!opt.policy_file)
-    { 
-      xfree (policies);
-      if (any_critical)
-        {
-          log_error ("critical marked policy without configured policies\n");
-          return GNUPG_No_Policy_Match;
-        }
-      return 0;
-    }
-
-  fp = fopen (opt.policy_file, "r");
-  if (!fp)
-    {
-      log_error ("failed to open `%s': %s\n",
-                 opt.policy_file, strerror (errno));
-      xfree (policies);
-      return GNUPG_No_Policy_Match;
-    }
-
-  for (;;) 
-    {
-      int c;
-      char *p, line[256];
-      char *haystack, *allowed;
-
-      /* read line */
-      do
-        {
-          if (!fgets (line, DIM(line)-1, fp) )
-            {
-              xfree (policies);
-              if (feof (fp))
-                {
-                  fclose (fp);
-                  /* with no critical policies this is only a warning */
-                  if (!any_critical)
-                    {
-                      log_info (_("note: certificate policy not allowed\n"));
-                      return 0;
-                    }
-                  log_error (_("certificate policy not allowed\n"));
-                  return GNUPG_No_Policy_Match;
-                }
-              fclose (fp);
-              return GNUPG_Read_Error;
-            }
-      
-          if (!*line || line[strlen(line)-1] != '\n')
-            {
-              /* eat until end of line */
-              while ( (c=getc (fp)) != EOF && c != '\n')
-                ;
-              fclose (fp);
-              xfree (policies);
-              return *line? GNUPG_Line_Too_Long: GNUPG_Incomplete_Line;
-            }
-          
-          /* Allow for empty lines and spaces */
-          for (p=line; spacep (p); p++)
-            ;
-        }
-      while (!*p || *p == '\n' || *p == '#');
-  
-      /* parse line */
-      for (allowed=line; spacep (allowed); allowed++)
-        ;
-      p = strpbrk (allowed, " :\n");
-      if (!*p || p == allowed)
-        {
-          fclose (fp);
-          xfree (policies);
-          return GNUPG_Configuration_Error;
-        }
-      *p = 0; /* strip the rest of the line */
-      /* See whether we find ALLOWED (which is an OID) in POLICIES */
-      for (haystack=policies; (p=strstr (haystack, allowed)); haystack = p+1)
-        {
-          if ( !(p == policies || p[-1] == '\n') )
-            continue; /* does not match the begin of a line */
-          if (p[strlen (allowed)] != ':')
-            continue; /* the length does not match */
-          /* Yep - it does match so return okay */
-          fclose (fp);
-          xfree (policies);
-          return 0;
-        }
-    }
-}
-
-
-static void
-find_up_store_certs_cb (void *cb_value, KsbaCert cert)
-{
-  if (keydb_store_cert (cert, 1, NULL))
-    log_error ("error storing issuer certificate as ephemeral\n");
-  ++*(int*)cb_value;
-}
-
-
-static int
-find_up (KEYDB_HANDLE kh, KsbaCert cert, const char *issuer)
-{
-  KsbaName authid;
-  KsbaSexp authidno;
-  int rc = -1;
-
-  if (!ksba_cert_get_auth_key_id (cert, NULL, &authid, &authidno))
-    {
-      const char *s = ksba_name_enum (authid, 0);
-      if (s && *authidno)
-        {
-          rc = keydb_search_issuer_sn (kh, s, authidno);
-          if (rc)
-              keydb_search_reset (kh);
-          if (rc == -1)
-            { /* And try the ephemeral DB. */
-              int old = keydb_set_ephemeral (kh, 1);
-              if (!old)
-                {
-                  rc = keydb_search_issuer_sn (kh, s, authidno);
-                  if (rc)
-                    keydb_search_reset (kh);
-                }
-              keydb_set_ephemeral (kh, old);
-            }
-        }
-      ksba_name_release (authid);
-      xfree (authidno);
-      /* Fixme: don't know how to do dirmngr lookup with serial+issuer. */
-    }
-  
-  if (rc) /* not found via authorithyKeyIdentifier, try regular issuer name */
-      rc = keydb_search_subject (kh, issuer);
-  if (rc == -1)
-    {
-      /* Not found, lets see whether we have one in the ephemeral key DB. */
-      int old = keydb_set_ephemeral (kh, 1);
-      if (!old)
-        {
-          keydb_search_reset (kh);
-          rc = keydb_search_subject (kh, issuer);
-        }
-      keydb_set_ephemeral (kh, old);
-    }
-
-  if (rc == -1 && opt.auto_issuer_key_retrieve)
-    {
-      STRLIST names = NULL;
-      int count = 0;
-      char *pattern;
-      const char *s;
-      
-      if (opt.verbose)
-        log_info (_("looking up issuer at external location\n"));
-      /* dirmngr is confused about unknown attributes so has a quick
-         and ugly hack we locate the CN and use this and the
-         following.  Fixme: we should have far ebtter parsing in the
-         dirmngr. */
-      s = strstr (issuer, "CN=");
-      if (!s || s == issuer || s[-1] != ',')
-        s = issuer;
-
-      pattern = xtrymalloc (strlen (s)+2);
-      if (!pattern)
-        return GNUPG_Out_Of_Core;
-      strcpy (stpcpy (pattern, "/"), s);
-      add_to_strlist (&names, pattern);
-      xfree (pattern);
-      rc = gpgsm_dirmngr_lookup (NULL, names, find_up_store_certs_cb, &count);
-      free_strlist (names);
-      if (opt.verbose)
-        log_info (_("number of issuers matching: %d\n"), count);
-      if (rc) 
-        {
-          log_error ("external key lookup failed: %s\n", gnupg_strerror (rc));
-          rc = -1;
-        }
-      else if (!count)
-        rc = -1;
-      else
-        {
-          int old;
-          /* The issuers are currently stored in the ephemeral key
-             DB, so we temporary switch to ephemeral mode. */
-          old = keydb_set_ephemeral (kh, 1);
-          keydb_search_reset (kh);
-          rc = keydb_search_subject (kh, issuer);
-          keydb_set_ephemeral (kh, old);
-        }
-    }
-  return rc;
-}
-
-
-/* Return the next certificate up in the chain starting at START.
-   Returns -1 when there are no more certificates. */
-int
-gpgsm_walk_cert_chain (KsbaCert start, KsbaCert *r_next)
-{
-  int rc = 0; 
-  char *issuer = NULL;
-  char *subject = NULL;
-  KEYDB_HANDLE kh = keydb_new (0);
-
-  *r_next = NULL;
-  if (!kh)
-    {
-      log_error (_("failed to allocated keyDB handle\n"));
-      rc = GNUPG_General_Error;
-      goto leave;
-    }
-
-  issuer = ksba_cert_get_issuer (start, 0);
-  subject = ksba_cert_get_subject (start, 0);
-  if (!issuer)
-    {
-      log_error ("no issuer found in certificate\n");
-      rc = GNUPG_Bad_Certificate;
-      goto leave;
-    }
-  if (!subject)
-    {
-      log_error ("no subject found in certificate\n");
-      rc = GNUPG_Bad_Certificate;
-      goto leave;
-    }
-
-  if (!strcmp (issuer, subject))
-    {
-      rc = -1; /* we are at the root */
-      goto leave; 
-    }
-
-  rc = find_up (kh, start, issuer);
-  if (rc)
-    {
-      /* it is quite common not to have a certificate, so better don't
-         print an error here */
-      if (rc != -1 && opt.verbose > 1)
-        log_error ("failed to find issuer's certificate: rc=%d\n", rc);
-      rc = GNUPG_Missing_Certificate;
-      goto leave;
-    }
-
-  rc = keydb_get_cert (kh, r_next);
-  if (rc)
-    {
-      log_error ("failed to get cert: rc=%d\n", rc);
-      rc = GNUPG_General_Error;
-    }
-
- leave:
-  xfree (issuer);
-  xfree (subject);
-  keydb_release (kh); 
-  return rc;
-}
-
-
-/* Check whether the CERT is a root certificate.  Returns True if this
-   is the case. */
-int
-gpgsm_is_root_cert (KsbaCert cert)
-{
-  char *issuer;
-  char *subject;
-  int yes;
-
-  issuer = ksba_cert_get_issuer (cert, 0);
-  subject = ksba_cert_get_subject (cert, 0);
-  yes = (issuer && subject && !strcmp (issuer, subject));
-  xfree (issuer);
-  xfree (subject);
-  return yes;
-}
-
-
-/* Validate a chain and optionally return the nearest expiration time
-   in R_EXPTIME */
-int
-gpgsm_validate_chain (CTRL ctrl, KsbaCert cert, time_t *r_exptime)
-{
-  int rc = 0, depth = 0, maxdepth;
-  char *issuer = NULL;
-  char *subject = NULL;
-  KEYDB_HANDLE kh = keydb_new (0);
-  KsbaCert subject_cert = NULL, issuer_cert = NULL;
-  time_t current_time = gnupg_get_time ();
-  time_t exptime = 0;
-  int any_expired = 0;
-  int any_revoked = 0;
-  int any_no_crl = 0;
-  int any_crl_too_old = 0;
-  int any_no_policy_match = 0;
-
-  if (r_exptime)
-    *r_exptime = 0;
-
-  if (opt.no_chain_validation)
-    {
-      log_info ("WARNING: bypassing certificate chain validation\n");
-      return 0;
-    }
-  
-  if (!kh)
-    {
-      log_error (_("failed to allocated keyDB handle\n"));
-      rc = GNUPG_General_Error;
-      goto leave;
-    }
-
-  if (DBG_X509)
-    gpgsm_dump_cert ("subject", cert);
-
-  subject_cert = cert;
-  maxdepth = 50;
-
-  for (;;)
-    {
-      xfree (issuer);
-      xfree (subject);
-      issuer = ksba_cert_get_issuer (subject_cert, 0);
-      subject = ksba_cert_get_subject (subject_cert, 0);
-
-      if (!issuer)
-        {
-          log_error ("no issuer found in certificate\n");
-          rc = GNUPG_Bad_Certificate;
-          goto leave;
-        }
-
-      {
-        time_t not_before, not_after;
-
-        not_before = ksba_cert_get_validity (subject_cert, 0);
-        not_after = ksba_cert_get_validity (subject_cert, 1);
-        if (not_before == (time_t)(-1) || not_after == (time_t)(-1))
-          {
-            log_error ("certificate with invalid validity\n");
-            rc = GNUPG_Bad_Certificate;
-            goto leave;
-          }
-
-        if (not_after)
-          {
-            if (!exptime)
-              exptime = not_after;
-            else if (not_after < exptime)
-              exptime = not_after;
-          }
-
-        if (not_before && current_time < not_before)
-          {
-            log_error ("certificate too young; valid from ");
-            gpgsm_dump_time (not_before);
-            log_printf ("\n");
-            rc = GNUPG_Certificate_Too_Young;
-            goto leave;
-          }            
-        if (not_after && current_time > not_after)
-          {
-            log_error ("certificate has expired at ");
-            gpgsm_dump_time (not_after);
-            log_printf ("\n");
-            any_expired = 1;
-          }            
-      }
-
-      rc = unknown_criticals (subject_cert);
-      if (rc)
-        goto leave;
-
-      if (!opt.no_policy_check)
-        {
-          rc = check_cert_policy (subject_cert);
-          if (rc == GNUPG_No_Policy_Match)
-            {
-              any_no_policy_match = 1;
-              rc = 1;
-            }
-          else if (rc)
-            goto leave;
-        }
-
-      if (!opt.no_crl_check)
-        {
-          rc = gpgsm_dirmngr_isvalid (subject_cert);
-          if (rc)
-            {
-              switch (rc)
-                {
-                case GNUPG_Certificate_Revoked:
-                  log_error (_("the certificate has been revoked\n"));
-                  any_revoked = 1;
-                  break;
-                case GNUPG_No_CRL_Known:
-                  log_error (_("no CRL found for certificate\n"));
-                  any_no_crl = 1;
-                  break;
-                case GNUPG_CRL_Too_Old:
-                  log_error (_("the available CRL is too old\n"));
-                  log_info (_("please make sure that the "
-                              "\"dirmngr\" is properly installed\n"));
-                  any_crl_too_old = 1;
-                  break;
-                default:
-                  log_error (_("checking the CRL failed: %s\n"),
-                             gnupg_strerror (rc));
-                  goto leave;
-                }
-              rc = 0;
-            }
-        }
-
-      if (subject && !strcmp (issuer, subject))
-        {
-          if (gpgsm_check_cert_sig (subject_cert, subject_cert) )
-            {
-              log_error ("selfsigned certificate has a BAD signatures\n");
-              rc = depth? GNUPG_Bad_Certificate_Path : GNUPG_Bad_Certificate;
-              goto leave;
-            }
-          rc = allowed_ca (subject_cert, NULL);
-          if (rc)
-            goto leave;
-
-          rc = gpgsm_agent_istrusted (subject_cert);
-          if (!rc)
-            ;
-          else if (rc == GNUPG_Not_Trusted)
-            {
-              int rc2;
-
-              char *fpr = gpgsm_get_fingerprint_string (subject_cert,
-                                                        GCRY_MD_SHA1);
-              log_info (_("root certificate is not marked trusted\n"));
-              log_info (_("fingerprint=%s\n"), fpr? fpr : "?");
-              xfree (fpr);
-              rc2 = gpgsm_agent_marktrusted (subject_cert);
-              if (!rc2)
-                {
-                  log_info (_("root certificate has now"
-                              " been marked as trusted\n"));
-                  rc = 0;
-                }
-              else 
-                {
-                  gpgsm_dump_cert ("issuer", subject_cert);
-                  log_info ("after checking the fingerprint, you may want "
-                            "to enter it manually into "
-                            "\"~/.gnupg-test/trustlist.txt\"\n");
-                }
-            }
-          else 
-            {
-              log_error (_("checking the trust list failed: %s\n"),
-                         gnupg_strerror (rc));
-            }
-          
-          break;  /* okay, a self-signed certicate is an end-point */
-        }
-      
-      depth++;
-      if (depth > maxdepth)
-        {
-          log_error (_("certificate chain too long\n"));
-          rc = GNUPG_Bad_Certificate_Path;
-          goto leave;
-        }
-
-      /* find the next cert up the tree */
-      keydb_search_reset (kh);
-      rc = find_up (kh, subject_cert, issuer);
-      if (rc)
-        {
-          if (rc == -1)
-            {
-              log_info ("issuer certificate (");
-              gpgsm_dump_string (issuer);
-              log_printf (") not found\n");
-            }
-          else
-            log_error ("failed to find issuer's certificate: rc=%d\n", rc);
-          rc = GNUPG_Missing_Certificate;
-          goto leave;
-        }
-
-      ksba_cert_release (issuer_cert); issuer_cert = NULL;
-      rc = keydb_get_cert (kh, &issuer_cert);
-      if (rc)
-        {
-          log_error ("failed to get cert: rc=%d\n", rc);
-          rc = GNUPG_General_Error;
-          goto leave;
-        }
-
-      if (DBG_X509)
-        {
-          log_debug ("got issuer's certificate:\n");
-          gpgsm_dump_cert ("issuer", issuer_cert);
-        }
-
-      if (gpgsm_check_cert_sig (issuer_cert, subject_cert) )
-        {
-          log_error ("certificate has a BAD signatures\n");
-          rc = GNUPG_Bad_Certificate_Path;
-          goto leave;
-        }
-
-      {
-        int chainlen;
-        rc = allowed_ca (issuer_cert, &chainlen);
-        if (rc)
-          goto leave;
-        if (chainlen >= 0 && (depth - 1) > chainlen)
-          {
-            log_error (_("certificate chain longer than allowed by CA (%d)\n"),
-                       chainlen);
-            rc = GNUPG_Bad_Certificate_Chain;
-            goto leave;
-          }
-      }
-
-      rc = gpgsm_cert_use_cert_p (issuer_cert);
-      if (rc)
-        {
-          gpgsm_status2 (ctrl, STATUS_ERROR, "certpath.issuer.keyusage",
-                         gnupg_error_token (rc), NULL);
-          rc = 0;
-        }
-
-      if (opt.verbose)
-        log_info ("certificate is good\n");
-      
-      keydb_search_reset (kh);
-      subject_cert = issuer_cert;
-      issuer_cert = NULL;
-    }
-
-  if (opt.no_policy_check)
-    log_info ("policies not checked due to --disable-policy-checks option\n");
-  if (opt.no_crl_check)
-    log_info ("CRLs not checked due to --disable-crl-checks option\n");
-
-  if (!rc)
-    { /* If we encountered an error somewhere during the checks, set
-         the error code to the most critical one */
-      if (any_revoked)
-        rc = GNUPG_Certificate_Revoked;
-      else if (any_no_crl)
-        rc = GNUPG_No_CRL_Known;
-      else if (any_crl_too_old)
-        rc = GNUPG_CRL_Too_Old;
-      else if (any_no_policy_match)
-        rc = GNUPG_No_Policy_Match;
-      else if (any_expired)
-        rc = GNUPG_Certificate_Expired;
-    }
-  
- leave:
-  if (r_exptime)
-    *r_exptime = exptime;
-  xfree (issuer);
-  keydb_release (kh); 
-  ksba_cert_release (issuer_cert);
-  if (subject_cert != cert)
-    ksba_cert_release (subject_cert);
-  return rc;
-}
-
-
-/* Check that the given certificate is valid but DO NOT check any
-   constraints.  We assume that the issuers certificate is already in
-   the DB and that this one is valid; which it should be because it
-   has been checked using this function. */
-int
-gpgsm_basic_cert_check (KsbaCert cert)
-{
-  int rc = 0;
-  char *issuer = NULL;
-  char *subject = NULL;
-  KEYDB_HANDLE kh = keydb_new (0);
-  KsbaCert issuer_cert = NULL;
-
-  if (opt.no_chain_validation)
-    {
-      log_info ("WARNING: bypassing basic certificate checks\n");
-      return 0;
-    }
-
-  if (!kh)
-    {
-      log_error (_("failed to allocated keyDB handle\n"));
-      rc = GNUPG_General_Error;
-      goto leave;
-    }
-
-  issuer = ksba_cert_get_issuer (cert, 0);
-  subject = ksba_cert_get_subject (cert, 0);
-  if (!issuer)
-    {
-      log_error ("no issuer found in certificate\n");
-      rc = GNUPG_Bad_Certificate;
-      goto leave;
-    }
-
-  if (subject && !strcmp (issuer, subject))
-    {
-      if (gpgsm_check_cert_sig (cert, cert) )
-        {
-          log_error ("selfsigned certificate has a BAD signatures\n");
-          rc = GNUPG_Bad_Certificate;
-          goto leave;
-        }
-    }
-  else
-    {
-      /* find the next cert up the tree */
-      keydb_search_reset (kh);
-      rc = find_up (kh, cert, issuer);
-      if (rc)
-        {
-          if (rc == -1)
-            {
-              log_info ("issuer certificate (");
-              gpgsm_dump_string (issuer);
-              log_printf (") not found\n");
-            }
-          else
-            log_error ("failed to find issuer's certificate: rc=%d\n", rc);
-          rc = GNUPG_Missing_Certificate;
-          goto leave;
-        }
-      
-      ksba_cert_release (issuer_cert); issuer_cert = NULL;
-      rc = keydb_get_cert (kh, &issuer_cert);
-      if (rc)
-        {
-          log_error ("failed to get cert: rc=%d\n", rc);
-          rc = GNUPG_General_Error;
-          goto leave;
-        }
-
-      if (gpgsm_check_cert_sig (issuer_cert, cert) )
-        {
-          log_error ("certificate has a BAD signatures\n");
-          rc = GNUPG_Bad_Certificate;
-          goto leave;
-        }
-      if (opt.verbose)
-        log_info ("certificate is good\n");
-    }
-
- leave:
-  xfree (issuer);
-  keydb_release (kh); 
-  ksba_cert_release (issuer_cert);
-  return rc;
-}
-