cmpcert.c revision c7f5f8508d98d5952d42ed7648c2a8f30a4da156 
1/*
2 * NSS utility functions
3 *
4 * ***** BEGIN LICENSE BLOCK *****
5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6 *
7 * The contents of this file are subject to the Mozilla Public License Version
8 * 1.1 (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
10 * http://www.mozilla.org/MPL/
11 *
12 * Software distributed under the License is distributed on an "AS IS" basis,
13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14 * for the specific language governing rights and limitations under the
15 * License.
16 *
17 * The Original Code is the Netscape security libraries.
18 *
19 * The Initial Developer of the Original Code is
20 * Netscape Communications Corporation.
21 * Portions created by the Initial Developer are Copyright (C) 1994-2000
22 * the Initial Developer. All Rights Reserved.
23 *
24 * Contributor(s):
25 *
26 * Alternatively, the contents of this file may be used under the terms of
27 * either the GNU General Public License Version 2 or later (the "GPL"), or
28 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
29 * in which case the provisions of the GPL or the LGPL are applicable instead
30 * of those above. If you wish to allow use of your version of this file only
31 * under the terms of either the GPL or the LGPL, and not to allow others to
32 * use your version of this file under the terms of the MPL, indicate your
33 * decision by deleting the provisions above and replace them with the notice
34 * and other provisions required by the GPL or the LGPL. If you do not delete
35 * the provisions above, a recipient may use your version of this file under
36 * the terms of any one of the MPL, the GPL or the LGPL.
37 *
38 * ***** END LICENSE BLOCK ***** */
39/* $Id: cmpcert.c,v 1.6 2008/02/01 22:09:09 julien.pierre.boogz%sun.com Exp $ */
40
41#include <stdio.h>
42#include <string.h>
43#include "prerror.h"
44#include "secitem.h"
45#include "prnetdb.h"
46#include "cert.h"
47#include "nspr.h"
48#include "secder.h"
49#include "key.h"
50#include "nss.h"
51
52/*
53 * Look to see if any of the signers in the cert chain for "cert" are found
54 * in the list of caNames.
55 * Returns SECSuccess if so, SECFailure if not.
56 */
57SECStatus
58NSS_CmpCertChainWCANames(CERTCertificate *cert, CERTDistNames *caNames)
59{
60  SECItem *         caname;
61  CERTCertificate * curcert;
62  CERTCertificate * oldcert;
63  PRInt32           contentlen;
64  int               j;
65  int               headerlen;
66  int               depth;
67  SECStatus         rv;
68  SECItem           issuerName;
69  SECItem           compatIssuerName;
70
71  if (!cert || !caNames || !caNames->nnames || !caNames->names ||
72      !caNames->names->data)
73    return SECFailure;
74  depth=0;
75  curcert = CERT_DupCertificate(cert);
76
77  while( curcert ) {
78    issuerName = curcert->derIssuer;
79
80    /* compute an alternate issuer name for compatibility with 2.0
81     * enterprise server, which send the CA names without
82     * the outer layer of DER header
83     */
84    rv = DER_Lengths(&issuerName, &headerlen, (PRUint32 *)&contentlen);
85    if ( rv == SECSuccess ) {
86      compatIssuerName.data = &issuerName.data[headerlen];
87      compatIssuerName.len = issuerName.len - headerlen;
88    } else {
89      compatIssuerName.data = NULL;
90      compatIssuerName.len = 0;
91    }
92
93    for (j = 0; j < caNames->nnames; j++) {
94      caname = &caNames->names[j];
95      if (SECITEM_CompareItem(&issuerName, caname) == SECEqual) {
96	rv = SECSuccess;
97	CERT_DestroyCertificate(curcert);
98	goto done;
99      } else if (SECITEM_CompareItem(&compatIssuerName, caname) == SECEqual) {
100	rv = SECSuccess;
101	CERT_DestroyCertificate(curcert);
102	goto done;
103      }
104    }
105    if ( ( depth <= 20 ) &&
106	 ( SECITEM_CompareItem(&curcert->derIssuer, &curcert->derSubject)
107	   != SECEqual ) ) {
108      oldcert = curcert;
109      curcert = CERT_FindCertByName(curcert->dbhandle,
110				    &curcert->derIssuer);
111      CERT_DestroyCertificate(oldcert);
112      depth++;
113    } else {
114      CERT_DestroyCertificate(curcert);
115      curcert = NULL;
116    }
117  }
118  rv = SECFailure;
119
120done:
121  return rv;
122}
123
124