mirror of
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309 lines
8.4 KiB
C
309 lines
8.4 KiB
C
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Netscape security libraries.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* p7verify -- A command to do a verification of a *detached* pkcs7 signature.
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*
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* $Id: p7verify.c,v 1.10 2008/08/08 23:47:57 julien.pierre.boogz%sun.com Exp $
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*/
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#include "nspr.h"
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#include "secutil.h"
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#include "plgetopt.h"
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#include "secpkcs7.h"
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#include "cert.h"
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#include "certdb.h"
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#include "secoid.h"
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#include "sechash.h" /* for HASH_GetHashObject() */
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#include "nss.h"
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#if defined(XP_UNIX)
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#include <string.h>
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#if (defined(XP_WIN) && !defined(WIN32)) || (defined(__sun) && !defined(SVR4))
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extern int fread(char *, size_t, size_t, FILE*);
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extern int fprintf(FILE *, char *, ...);
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#endif
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static HASH_HashType
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AlgorithmToHashType(SECAlgorithmID *digestAlgorithms)
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{
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SECOidTag tag;
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tag = SECOID_GetAlgorithmTag(digestAlgorithms);
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switch (tag) {
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case SEC_OID_MD2:
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return HASH_AlgMD2;
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case SEC_OID_MD5:
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return HASH_AlgMD5;
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case SEC_OID_SHA1:
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return HASH_AlgSHA1;
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default:
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fprintf(stderr, "should never get here\n");
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return HASH_AlgNULL;
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}
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}
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static int
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DigestFile(unsigned char *digest, unsigned int *len, unsigned int maxLen,
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FILE *inFile, HASH_HashType hashType)
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{
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int nb;
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unsigned char ibuf[4096];
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const SECHashObject *hashObj;
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void *hashcx;
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hashObj = HASH_GetHashObject(hashType);
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hashcx = (* hashObj->create)();
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if (hashcx == NULL)
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return -1;
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(* hashObj->begin)(hashcx);
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for (;;) {
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if (feof(inFile)) break;
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nb = fread(ibuf, 1, sizeof(ibuf), inFile);
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if (nb != sizeof(ibuf)) {
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if (nb == 0) {
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if (ferror(inFile)) {
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PORT_SetError(SEC_ERROR_IO);
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(* hashObj->destroy)(hashcx, PR_TRUE);
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return -1;
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}
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/* eof */
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break;
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}
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}
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(* hashObj->update)(hashcx, ibuf, nb);
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}
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(* hashObj->end)(hashcx, digest, len, maxLen);
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(* hashObj->destroy)(hashcx, PR_TRUE);
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return 0;
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}
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static void
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Usage(char *progName)
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{
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fprintf(stderr,
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"Usage: %s -c content -s signature [-d dbdir] [-u certusage]\n",
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progName);
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fprintf(stderr, "%-20s content file that was signed\n",
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"-c content");
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fprintf(stderr, "%-20s file containing signature for that content\n",
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"-s signature");
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fprintf(stderr,
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"%-20s Key/Cert database directory (default is ~/.netscape)\n",
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"-d dbdir");
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fprintf(stderr, "%-20s Define the type of certificate usage (default is certUsageEmailSigner)\n",
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"-u certusage");
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fprintf(stderr, "%-25s 0 - certUsageSSLClient\n", " ");
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fprintf(stderr, "%-25s 1 - certUsageSSLServer\n", " ");
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fprintf(stderr, "%-25s 2 - certUsageSSLServerWithStepUp\n", " ");
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fprintf(stderr, "%-25s 3 - certUsageSSLCA\n", " ");
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fprintf(stderr, "%-25s 4 - certUsageEmailSigner\n", " ");
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fprintf(stderr, "%-25s 5 - certUsageEmailRecipient\n", " ");
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fprintf(stderr, "%-25s 6 - certUsageObjectSigner\n", " ");
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fprintf(stderr, "%-25s 7 - certUsageUserCertImport\n", " ");
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fprintf(stderr, "%-25s 8 - certUsageVerifyCA\n", " ");
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fprintf(stderr, "%-25s 9 - certUsageProtectedObjectSigner\n", " ");
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fprintf(stderr, "%-25s 10 - certUsageStatusResponder\n", " ");
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fprintf(stderr, "%-25s 11 - certUsageAnyCA\n", " ");
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exit(-1);
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}
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static int
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HashDecodeAndVerify(FILE *out, FILE *content, PRFileDesc *signature,
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SECCertUsage usage, char *progName)
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{
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SECItem derdata;
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SEC_PKCS7ContentInfo *cinfo;
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SEC_PKCS7SignedData *signedData;
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HASH_HashType digestType;
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SECItem digest;
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unsigned char buffer[32];
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if (SECU_ReadDERFromFile(&derdata, signature, PR_FALSE) != SECSuccess) {
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SECU_PrintError(progName, "error reading signature file");
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return -1;
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}
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cinfo = SEC_PKCS7DecodeItem(&derdata, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL);
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if (cinfo == NULL)
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return -1;
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if (! SEC_PKCS7ContentIsSigned(cinfo)) {
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fprintf (out, "Signature file is pkcs7 data, but not signed.\n");
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return -1;
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}
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signedData = cinfo->content.signedData;
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/* assume that there is only one digest algorithm for now */
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digestType = AlgorithmToHashType(signedData->digestAlgorithms[0]);
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if (digestType == HASH_AlgNULL) {
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fprintf (out, "Invalid hash algorithmID\n");
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return -1;
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}
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digest.data = buffer;
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if (DigestFile (digest.data, &digest.len, 32, content, digestType)) {
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SECU_PrintError (progName, "problem computing message digest");
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return -1;
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}
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fprintf(out, "Signature is ");
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if (SEC_PKCS7VerifyDetachedSignature (cinfo, usage, &digest, digestType,
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PR_FALSE))
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fprintf(out, "valid.\n");
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else
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fprintf(out, "invalid (Reason: %s).\n",
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SECU_Strerror(PORT_GetError()));
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SEC_PKCS7DestroyContentInfo(cinfo);
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return 0;
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}
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int
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main(int argc, char **argv)
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{
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char *progName;
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FILE *contentFile, *outFile;
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PRFileDesc *signatureFile;
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SECCertUsage certUsage = certUsageEmailSigner;
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PLOptState *optstate;
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PLOptStatus status;
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SECStatus rv;
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progName = strrchr(argv[0], '/');
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progName = progName ? progName+1 : argv[0];
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contentFile = NULL;
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signatureFile = NULL;
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outFile = NULL;
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/*
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* Parse command line arguments
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*/
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optstate = PL_CreateOptState(argc, argv, "c:d:o:s:u:");
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while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) {
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switch (optstate->option) {
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case '?':
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Usage(progName);
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break;
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case 'c':
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contentFile = fopen(optstate->value, "r");
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if (!contentFile) {
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fprintf(stderr, "%s: unable to open \"%s\" for reading\n",
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progName, optstate->value);
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return -1;
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}
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break;
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case 'd':
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SECU_ConfigDirectory(optstate->value);
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break;
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case 'o':
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outFile = fopen(optstate->value, "w");
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if (!outFile) {
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fprintf(stderr, "%s: unable to open \"%s\" for writing\n",
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progName, optstate->value);
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return -1;
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}
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break;
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case 's':
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signatureFile = PR_Open(optstate->value, PR_RDONLY, 0);
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if (!signatureFile) {
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fprintf(stderr, "%s: unable to open \"%s\" for reading\n",
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progName, optstate->value);
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return -1;
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}
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break;
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case 'u': {
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int usageType;
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usageType = atoi (strdup(optstate->value));
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if (usageType < certUsageSSLClient || usageType > certUsageAnyCA)
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return -1;
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certUsage = (SECCertUsage)usageType;
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break;
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}
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}
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}
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if (!contentFile) Usage (progName);
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if (!signatureFile) Usage (progName);
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if (!outFile) outFile = stdout;
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/* Call the NSS initialization routines */
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PR_Init(PR_SYSTEM_THREAD, PR_PRIORITY_NORMAL, 1);
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rv = NSS_Init(SECU_ConfigDirectory(NULL));
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if (rv != SECSuccess) {
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SECU_PrintPRandOSError(progName);
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return -1;
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}
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if (HashDecodeAndVerify(outFile, contentFile, signatureFile,
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certUsage, progName)) {
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SECU_PrintError(progName, "problem decoding/verifying signature");
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return -1;
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}
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if (NSS_Shutdown() != SECSuccess) {
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exit(1);
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}
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return 0;
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}
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