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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "secutil.h"
#include "secmod.h"
#include "cert.h"
#include "secoid.h"
#include "nss.h"
/* NSPR 2.0 header files */
#include "prinit.h"
#include "prprf.h"
#include "prsystem.h"
#include "prmem.h"
/* Portable layer header files */
#include "plstr.h"
#include "sechash.h" /* for HASH_GetHashObject() */
static PRBool debugInfo;
static PRBool verbose;
static PRBool doVerify;
static PRBool displayAll;
static const char *const usageInfo[] = {
"signver - verify a detached PKCS7 signature - Version " NSS_VERSION,
"Commands:",
" -A display all information from pkcs #7",
" -V verify the signed object and display result",
"Options:",
" -a signature file is ASCII",
" -d certdir directory containing cert database",
" -i dataFileName input file containing signed data (default stdin)",
" -o outputFileName output file name, default stdout",
" -s signatureFileName input file for signature (default stdin)",
" -v display verbose reason for failure"
};
static int nUsageInfo = sizeof(usageInfo) / sizeof(char *);
extern int SV_PrintPKCS7ContentInfo(FILE *, SECItem *);
static void
Usage(char *progName, FILE *outFile)
{
int i;
fprintf(outFile, "Usage: %s [ commands ] options\n", progName);
for (i = 0; i < nUsageInfo; i++)
fprintf(outFile, "%s\n", usageInfo[i]);
exit(-1);
}
static HASH_HashType
AlgorithmToHashType(SECAlgorithmID *digestAlgorithms)
{
SECOidTag tag = SECOID_GetAlgorithmTag(digestAlgorithms);
HASH_HashType hash = HASH_GetHashTypeByOidTag(tag);
return hash;
}
static SECStatus
DigestContent(SECItem *digest, SECItem *content, HASH_HashType hashType)
{
unsigned int maxLen = digest->len;
unsigned int len = HASH_ResultLen(hashType);
SECStatus rv;
if (len > maxLen) {
PORT_SetError(SEC_ERROR_OUTPUT_LEN);
return SECFailure;
}
rv = HASH_HashBuf(hashType, digest->data, content->data, content->len);
if (rv == SECSuccess)
digest->len = len;
return rv;
}
enum {
cmd_DisplayAllPCKS7Info = 0,
cmd_VerifySignedObj
};
enum {
opt_ASCII,
opt_CertDir,
opt_InputDataFile,
opt_OutputFile,
opt_InputSigFile,
opt_PrintWhyFailure,
opt_DebugInfo
};
static secuCommandFlag signver_commands[] = {
{ /* cmd_DisplayAllPCKS7Info*/ 'A', PR_FALSE, 0, PR_FALSE },
{ /* cmd_VerifySignedObj */ 'V', PR_FALSE, 0, PR_FALSE }
};
static secuCommandFlag signver_options[] = {
{ /* opt_ASCII */ 'a', PR_FALSE, 0, PR_FALSE },
{ /* opt_CertDir */ 'd', PR_TRUE, 0, PR_FALSE },
{ /* opt_InputDataFile */ 'i', PR_TRUE, 0, PR_FALSE },
{ /* opt_OutputFile */ 'o', PR_TRUE, 0, PR_FALSE },
{ /* opt_InputSigFile */ 's', PR_TRUE, 0, PR_FALSE },
{ /* opt_PrintWhyFailure */ 'v', PR_FALSE, 0, PR_FALSE },
{ /* opt_DebugInfo */ 0, PR_FALSE, 0, PR_FALSE, "debug" }
};
int
main(int argc, char **argv)
{
PRFileDesc *contentFile = NULL;
PRFileDesc *signFile = PR_STDIN;
FILE *outFile = stdout;
char *progName;
SECStatus rv;
int result = 1;
SECItem pkcs7der, content;
secuCommand signver;
pkcs7der.data = NULL;
content.data = NULL;
signver.numCommands = sizeof(signver_commands) / sizeof(secuCommandFlag);
signver.numOptions = sizeof(signver_options) / sizeof(secuCommandFlag);
signver.commands = signver_commands;
signver.options = signver_options;
#ifdef XP_PC
progName = strrchr(argv[0], '\\');
#else
progName = strrchr(argv[0], '/');
#endif
progName = progName ? progName + 1 : argv[0];
rv = SECU_ParseCommandLine(argc, argv, progName, &signver);
if (SECSuccess != rv) {
Usage(progName, outFile);
}
debugInfo = signver.options[opt_DebugInfo].activated;
verbose = signver.options[opt_PrintWhyFailure].activated;
doVerify = signver.commands[cmd_VerifySignedObj].activated;
displayAll = signver.commands[cmd_DisplayAllPCKS7Info].activated;
if (!doVerify && !displayAll)
doVerify = PR_TRUE;
/* Set the certdb directory (default is ~/.netscape) */
rv = NSS_Init(SECU_ConfigDirectory(signver.options[opt_CertDir].arg));
if (rv != SECSuccess) {
SECU_PrintPRandOSError(progName);
return result;
}
/* below here, goto cleanup */
SECU_RegisterDynamicOids();
/* Open the input content file. */
if (signver.options[opt_InputDataFile].activated &&
signver.options[opt_InputDataFile].arg) {
if (PL_strcmp("-", signver.options[opt_InputDataFile].arg)) {
contentFile = PR_Open(signver.options[opt_InputDataFile].arg,
PR_RDONLY, 0);
if (!contentFile) {
PR_fprintf(PR_STDERR,
"%s: unable to open \"%s\" for reading.\n",
progName, signver.options[opt_InputDataFile].arg);
goto cleanup;
}
} else
contentFile = PR_STDIN;
}
/* Open the input signature file. */
if (signver.options[opt_InputSigFile].activated &&
signver.options[opt_InputSigFile].arg) {
if (PL_strcmp("-", signver.options[opt_InputSigFile].arg)) {
signFile = PR_Open(signver.options[opt_InputSigFile].arg,
PR_RDONLY, 0);
if (!signFile) {
PR_fprintf(PR_STDERR,
"%s: unable to open \"%s\" for reading.\n",
progName, signver.options[opt_InputSigFile].arg);
goto cleanup;
}
}
}
if (contentFile == PR_STDIN && signFile == PR_STDIN && doVerify) {
PR_fprintf(PR_STDERR,
"%s: cannot read both content and signature from standard input\n",
progName);
goto cleanup;
}
/* Open|Create the output file. */
if (signver.options[opt_OutputFile].activated) {
outFile = fopen(signver.options[opt_OutputFile].arg, "w");
if (!outFile) {
PR_fprintf(PR_STDERR, "%s: unable to open \"%s\" for writing.\n",
progName, signver.options[opt_OutputFile].arg);
goto cleanup;
}
}
/* read in the input files' contents */
rv = SECU_ReadDERFromFile(&pkcs7der, signFile,
signver.options[opt_ASCII].activated, PR_FALSE);
if (signFile != PR_STDIN)
PR_Close(signFile);
if (rv != SECSuccess) {
SECU_PrintError(progName, "problem reading PKCS7 input");
goto cleanup;
}
if (contentFile) {
rv = SECU_FileToItem(&content, contentFile);
if (contentFile != PR_STDIN)
PR_Close(contentFile);
if (rv != SECSuccess)
content.data = NULL;
}
/* Signature Verification */
if (doVerify) {
SEC_PKCS7ContentInfo *cinfo;
SEC_PKCS7SignedData *signedData;
HASH_HashType digestType;
PRBool contentIsSigned;
cinfo = SEC_PKCS7DecodeItem(&pkcs7der, NULL, NULL, NULL, NULL,
NULL, NULL, NULL);
if (cinfo == NULL) {
PR_fprintf(PR_STDERR, "Unable to decode PKCS7 data\n");
goto cleanup;
}
/* below here, goto done */
contentIsSigned = SEC_PKCS7ContentIsSigned(cinfo);
if (debugInfo) {
PR_fprintf(PR_STDERR, "Content is%s encrypted.\n",
SEC_PKCS7ContentIsEncrypted(cinfo) ? "" : " not");
}
if (debugInfo || !contentIsSigned) {
PR_fprintf(PR_STDERR, "Content is%s signed.\n",
contentIsSigned ? "" : " not");
}
if (!contentIsSigned)
goto done;
signedData = cinfo->content.signedData;
/* assume that there is only one digest algorithm for now */
digestType = AlgorithmToHashType(signedData->digestAlgorithms[0]);
if (digestType == HASH_AlgNULL) {
PR_fprintf(PR_STDERR, "Invalid hash algorithmID\n");
goto done;
}
if (content.data) {
SECCertUsage usage = certUsageEmailSigner;
SECItem digest;
unsigned char digestBuffer[HASH_LENGTH_MAX];
if (debugInfo)
PR_fprintf(PR_STDERR, "contentToVerify=%s\n", content.data);
digest.data = digestBuffer;
digest.len = sizeof digestBuffer;
if (DigestContent(&digest, &content, digestType)) {
SECU_PrintError(progName, "Message digest computation failure");
goto done;
}
if (debugInfo) {
unsigned int i;
PR_fprintf(PR_STDERR, "Data Digest=:");
for (i = 0; i < digest.len; i++)
PR_fprintf(PR_STDERR, "%02x:", digest.data[i]);
PR_fprintf(PR_STDERR, "\n");
}
fprintf(outFile, "signatureValid=");
PORT_SetError(0);
if (SEC_PKCS7VerifyDetachedSignature(cinfo, usage,
&digest, digestType, PR_FALSE)) {
fprintf(outFile, "yes");
} else {
fprintf(outFile, "no");
if (verbose) {
fprintf(outFile, ":%s",
SECU_Strerror(PORT_GetError()));
}
}
fprintf(outFile, "\n");
result = 0;
}
done:
SEC_PKCS7DestroyContentInfo(cinfo);
}
if (displayAll) {
if (SV_PrintPKCS7ContentInfo(outFile, &pkcs7der))
result = 1;
}
cleanup:
SECITEM_FreeItem(&pkcs7der, PR_FALSE);
SECITEM_FreeItem(&content, PR_FALSE);
if (NSS_Shutdown() != SECSuccess) {
result = 1;
}
return result;
}