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348 lines
10 KiB
C
348 lines
10 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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#include "secutil.h"
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#include "secmod.h"
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#include "cert.h"
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#include "secoid.h"
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#include "nss.h"
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/* NSPR 2.0 header files */
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#include "prinit.h"
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#include "prprf.h"
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#include "prsystem.h"
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#include "prmem.h"
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/* Portable layer header files */
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#include "plstr.h"
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#include "sechash.h" /* for HASH_GetHashObject() */
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static PRBool debugInfo;
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static PRBool verbose;
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static PRBool doVerify;
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static PRBool displayAll;
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static const char * const usageInfo[] = {
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"signver - verify a detached PKCS7 signature - Version " NSS_VERSION,
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"Commands:",
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" -A display all information from pkcs #7",
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" -V verify the signed object and display result",
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"Options:",
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" -a signature file is ASCII",
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" -d certdir directory containing cert database",
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" -i dataFileName input file containing signed data (default stdin)",
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" -o outputFileName output file name, default stdout",
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" -s signatureFileName input file for signature (default stdin)",
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" -v display verbose reason for failure"
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};
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static int nUsageInfo = sizeof(usageInfo)/sizeof(char *);
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extern int SV_PrintPKCS7ContentInfo(FILE *, SECItem *);
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static void Usage(char *progName, FILE *outFile)
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{
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int i;
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fprintf(outFile, "Usage: %s [ commands ] options\n", progName);
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for (i = 0; i < nUsageInfo; i++)
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fprintf(outFile, "%s\n", usageInfo[i]);
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exit(-1);
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}
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static HASH_HashType
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AlgorithmToHashType(SECAlgorithmID *digestAlgorithms)
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{
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SECOidTag tag = SECOID_GetAlgorithmTag(digestAlgorithms);
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HASH_HashType hash = HASH_GetHashTypeByOidTag(tag);
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return hash;
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}
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static SECStatus
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DigestContent (SECItem * digest, SECItem * content, HASH_HashType hashType)
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{
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unsigned int maxLen = digest->len;
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unsigned int len = HASH_ResultLen(hashType);
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SECStatus rv;
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if (len > maxLen) {
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PORT_SetError(SEC_ERROR_OUTPUT_LEN);
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return SECFailure;
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}
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rv = HASH_HashBuf(hashType, digest->data, content->data, content->len);
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if (rv == SECSuccess)
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digest->len = len;
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return rv;
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}
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enum {
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cmd_DisplayAllPCKS7Info = 0,
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cmd_VerifySignedObj
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};
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enum {
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opt_ASCII,
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opt_CertDir,
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opt_InputDataFile,
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opt_ItemNumber,
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opt_OutputFile,
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opt_InputSigFile,
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opt_PrintWhyFailure,
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opt_DebugInfo
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};
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static secuCommandFlag signver_commands[] =
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{
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{ /* cmd_DisplayAllPCKS7Info*/ 'A', PR_FALSE, 0, PR_FALSE },
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{ /* cmd_VerifySignedObj */ 'V', PR_FALSE, 0, PR_FALSE }
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};
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static secuCommandFlag signver_options[] =
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{
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{ /* opt_ASCII */ 'a', PR_FALSE, 0, PR_FALSE },
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{ /* opt_CertDir */ 'd', PR_TRUE, 0, PR_FALSE },
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{ /* opt_InputDataFile */ 'i', PR_TRUE, 0, PR_FALSE },
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{ /* opt_OutputFile */ 'o', PR_TRUE, 0, PR_FALSE },
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{ /* opt_InputSigFile */ 's', PR_TRUE, 0, PR_FALSE },
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{ /* opt_PrintWhyFailure */ 'v', PR_FALSE, 0, PR_FALSE },
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{ /* opt_DebugInfo */ 0, PR_FALSE, 0, PR_FALSE, "debug" }
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};
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int main(int argc, char **argv)
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{
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PRFileDesc *contentFile = NULL;
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PRFileDesc *signFile = PR_STDIN;
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FILE * outFile = stdout;
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char * progName;
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SECStatus rv;
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int result = 1;
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SECItem pkcs7der, content;
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secuCommand signver;
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pkcs7der.data = NULL;
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content.data = NULL;
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signver.numCommands = sizeof(signver_commands) /sizeof(secuCommandFlag);
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signver.numOptions = sizeof(signver_options) / sizeof(secuCommandFlag);
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signver.commands = signver_commands;
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signver.options = signver_options;
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#ifdef XP_PC
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progName = strrchr(argv[0], '\\');
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#else
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progName = strrchr(argv[0], '/');
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#endif
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progName = progName ? progName+1 : argv[0];
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rv = SECU_ParseCommandLine(argc, argv, progName, &signver);
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if (SECSuccess != rv) {
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Usage(progName, outFile);
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}
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debugInfo = signver.options[opt_DebugInfo ].activated;
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verbose = signver.options[opt_PrintWhyFailure ].activated;
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doVerify = signver.commands[cmd_VerifySignedObj].activated;
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displayAll= signver.commands[cmd_DisplayAllPCKS7Info].activated;
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if (!doVerify && !displayAll)
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doVerify = PR_TRUE;
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/* Set the certdb directory (default is ~/.netscape) */
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rv = NSS_Init(SECU_ConfigDirectory(signver.options[opt_CertDir].arg));
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if (rv != SECSuccess) {
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SECU_PrintPRandOSError(progName);
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return result;
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}
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/* below here, goto cleanup */
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SECU_RegisterDynamicOids();
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/* Open the input content file. */
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if (signver.options[opt_InputDataFile].activated &&
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signver.options[opt_InputDataFile].arg) {
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if (PL_strcmp("-", signver.options[opt_InputDataFile].arg)) {
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contentFile = PR_Open(signver.options[opt_InputDataFile].arg,
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PR_RDONLY, 0);
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if (!contentFile) {
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PR_fprintf(PR_STDERR,
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"%s: unable to open \"%s\" for reading.\n",
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progName, signver.options[opt_InputDataFile].arg);
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goto cleanup;
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}
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} else
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contentFile = PR_STDIN;
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}
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/* Open the input signature file. */
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if (signver.options[opt_InputSigFile].activated &&
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signver.options[opt_InputSigFile].arg) {
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if (PL_strcmp("-", signver.options[opt_InputSigFile].arg)) {
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signFile = PR_Open(signver.options[opt_InputSigFile].arg,
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PR_RDONLY, 0);
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if (!signFile) {
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PR_fprintf(PR_STDERR,
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"%s: unable to open \"%s\" for reading.\n",
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progName, signver.options[opt_InputSigFile].arg);
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goto cleanup;
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}
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}
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}
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if (contentFile == PR_STDIN && signFile == PR_STDIN && doVerify) {
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PR_fprintf(PR_STDERR,
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"%s: cannot read both content and signature from standard input\n",
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progName);
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goto cleanup;
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}
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/* Open|Create the output file. */
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if (signver.options[opt_OutputFile].activated) {
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outFile = fopen(signver.options[opt_OutputFile].arg, "w");
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if (!outFile) {
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PR_fprintf(PR_STDERR, "%s: unable to open \"%s\" for writing.\n",
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progName, signver.options[opt_OutputFile].arg);
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goto cleanup;
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}
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}
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/* read in the input files' contents */
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rv = SECU_ReadDERFromFile(&pkcs7der, signFile,
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signver.options[opt_ASCII].activated);
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if (signFile != PR_STDIN)
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PR_Close(signFile);
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if (rv != SECSuccess) {
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SECU_PrintError(progName, "problem reading PKCS7 input");
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goto cleanup;
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}
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if (contentFile) {
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rv = SECU_FileToItem(&content, contentFile);
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if (contentFile != PR_STDIN)
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PR_Close(contentFile);
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if (rv != SECSuccess)
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content.data = NULL;
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}
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/* Signature Verification */
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if (doVerify) {
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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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PRBool contentIsSigned;
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cinfo = SEC_PKCS7DecodeItem(&pkcs7der, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL);
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if (cinfo == NULL) {
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PR_fprintf(PR_STDERR, "Unable to decode PKCS7 data\n");
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goto cleanup;
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}
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/* below here, goto done */
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contentIsSigned = SEC_PKCS7ContentIsSigned(cinfo);
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if (debugInfo) {
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PR_fprintf(PR_STDERR, "Content is%s encrypted.\n",
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SEC_PKCS7ContentIsEncrypted(cinfo) ? "" : " not");
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}
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if (debugInfo || !contentIsSigned) {
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PR_fprintf(PR_STDERR, "Content is%s signed.\n",
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contentIsSigned ? "" : " not");
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}
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if (!contentIsSigned)
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goto done;
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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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PR_fprintf(PR_STDERR, "Invalid hash algorithmID\n");
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goto done;
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}
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if (content.data) {
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SECCertUsage usage = certUsageEmailSigner;
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SECItem digest;
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unsigned char digestBuffer[HASH_LENGTH_MAX];
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if (debugInfo)
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PR_fprintf(PR_STDERR, "contentToVerify=%s\n", content.data);
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digest.data = digestBuffer;
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digest.len = sizeof digestBuffer;
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if (DigestContent(&digest, &content, digestType)) {
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SECU_PrintError(progName, "Message digest computation failure");
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goto done;
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}
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if (debugInfo) {
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unsigned int i;
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PR_fprintf(PR_STDERR, "Data Digest=:");
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for (i = 0; i < digest.len; i++)
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PR_fprintf(PR_STDERR, "%02x:", digest.data[i]);
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PR_fprintf(PR_STDERR, "\n");
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}
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fprintf(outFile, "signatureValid=");
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PORT_SetError(0);
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if (SEC_PKCS7VerifyDetachedSignature (cinfo, usage,
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&digest, digestType, PR_FALSE)) {
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fprintf(outFile, "yes");
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} else {
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fprintf(outFile, "no");
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if (verbose) {
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fprintf(outFile, ":%s",
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SECU_ErrorString((int16)PORT_GetError()));
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}
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}
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fprintf(outFile, "\n");
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result = 0;
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}
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done:
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SEC_PKCS7DestroyContentInfo(cinfo);
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}
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if (displayAll) {
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if (SV_PrintPKCS7ContentInfo(outFile, &pkcs7der))
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result = 1;
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}
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cleanup:
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SECITEM_FreeItem(&pkcs7der, PR_FALSE);
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SECITEM_FreeItem(&content, PR_FALSE);
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if (NSS_Shutdown() != SECSuccess) {
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result = 1;
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}
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return result;
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}
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