diff options
Diffstat (limited to 'security/nss/cmd/p7sign/p7sign.c')
| -rw-r--r-- | security/nss/cmd/p7sign/p7sign.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/security/nss/cmd/p7sign/p7sign.c b/security/nss/cmd/p7sign/p7sign.c new file mode 100644 index 000000000..3ac462006 --- /dev/null +++ b/security/nss/cmd/p7sign/p7sign.c @@ -0,0 +1,281 @@ +/* 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 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * p7sign -- A command to create a *detached* pkcs7 signature (over a given + * input file). + */ + +#include "nspr.h" +#include "plgetopt.h" +#include "secutil.h" +#include "secpkcs7.h" +#include "cert.h" +#include "certdb.h" +#include "sechash.h" /* for HASH_GetHashObject() */ +#include "nss.h" +#include "pk11func.h" + +#if defined(XP_UNIX) +#include <unistd.h> +#endif + +#include <stdio.h> +#include <string.h> + +#if (defined(XP_WIN) && !defined(WIN32)) || (defined(__sun) && !defined(SVR4)) +extern int fread(char *, size_t, size_t, FILE *); +extern int fwrite(char *, size_t, size_t, FILE *); +extern int fprintf(FILE *, char *, ...); +#endif + +static secuPWData pwdata = { PW_NONE, 0 }; + +static void +Usage(char *progName) +{ + fprintf(stderr, + "Usage: %s -k keyname [-d keydir] [-i input] [-o output]\n", + progName); + fprintf(stderr, "%-20s Nickname of key to use for signature\n", + "-k keyname"); + fprintf(stderr, "%-20s Key database directory (default is ~/.netscape)\n", + "-d keydir"); + fprintf(stderr, "%-20s Define an input file to use (default is stdin)\n", + "-i input"); + fprintf(stderr, "%-20s Define an output file to use (default is stdout)\n", + "-o output"); + fprintf(stderr, "%-20s Encapsulate content in signature message\n", + "-e"); + fprintf(stderr, "%-20s Password to the key databse\n", "-p"); + fprintf(stderr, "%-20s password file\n", "-f"); + exit(-1); +} + +static void +SignOut(void *arg, const char *buf, unsigned long len) +{ + FILE *out; + + out = (FILE *)arg; + fwrite(buf, len, 1, out); +} + +static int +CreateDigest(SECItem *data, char *digestdata, unsigned int *len, unsigned int maxlen) +{ + const SECHashObject *hashObj; + void *hashcx; + + /* XXX probably want to extend interface to allow other hash algorithms */ + hashObj = HASH_GetHashObject(HASH_AlgSHA1); + + hashcx = (*hashObj->create)(); + if (hashcx == NULL) + return -1; + + (*hashObj->begin)(hashcx); + (*hashObj->update)(hashcx, data->data, data->len); + (*hashObj->end)(hashcx, (unsigned char *)digestdata, len, maxlen); + (*hashObj->destroy)(hashcx, PR_TRUE); + return 0; +} + +static int +SignFile(FILE *outFile, PRFileDesc *inFile, CERTCertificate *cert, + PRBool encapsulated) +{ + char digestdata[32]; + unsigned int len; + SECItem digest, data2sign; + SEC_PKCS7ContentInfo *cinfo; + SECStatus rv; + + if (outFile == NULL || inFile == NULL || cert == NULL) + return -1; + + /* suck the file in */ + if (SECU_ReadDERFromFile(&data2sign, inFile, PR_FALSE, + PR_FALSE) != SECSuccess) + return -1; + + if (!encapsulated) { + /* unfortunately, we must create the digest ourselves */ + /* SEC_PKCS7CreateSignedData should have a flag to not include */ + /* the content for non-encapsulated content at encode time, but */ + /* should always compute the hash itself */ + if (CreateDigest(&data2sign, digestdata, &len, 32) < 0) + return -1; + digest.data = (unsigned char *)digestdata; + digest.len = len; + } + + /* XXX Need a better way to handle that usage stuff! */ + cinfo = SEC_PKCS7CreateSignedData(cert, certUsageEmailSigner, NULL, + SEC_OID_SHA1, + encapsulated ? NULL : &digest, + NULL, NULL); + if (cinfo == NULL) + return -1; + + if (encapsulated) { + SEC_PKCS7SetContent(cinfo, (char *)data2sign.data, data2sign.len); + } + + rv = SEC_PKCS7IncludeCertChain(cinfo, NULL); + if (rv != SECSuccess) { + SEC_PKCS7DestroyContentInfo(cinfo); + return -1; + } + + rv = SEC_PKCS7Encode(cinfo, SignOut, outFile, NULL, + NULL, &pwdata); + + SECITEM_FreeItem(&data2sign, PR_FALSE); + SEC_PKCS7DestroyContentInfo(cinfo); + + if (rv != SECSuccess) + return -1; + + return 0; +} + +int +main(int argc, char **argv) +{ + char *progName; + FILE *outFile; + PRFileDesc *inFile; + char *keyName = NULL; + CERTCertDBHandle *certHandle; + CERTCertificate *cert = NULL; + PRBool encapsulated = PR_FALSE; + PLOptState *optstate; + PLOptStatus status; + SECStatus rv; + + progName = strrchr(argv[0], '/'); + progName = progName ? progName + 1 : argv[0]; + + inFile = NULL; + outFile = NULL; + keyName = NULL; + + /* + * Parse command line arguments + */ + optstate = PL_CreateOptState(argc, argv, "ed:k:i:o:p:f:"); + while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) { + switch (optstate->option) { + case '?': + Usage(progName); + break; + + case 'e': + /* create a message with the signed content encapsulated */ + encapsulated = PR_TRUE; + break; + + case 'd': + SECU_ConfigDirectory(optstate->value); + break; + + case 'i': + inFile = PR_Open(optstate->value, PR_RDONLY, 0); + if (!inFile) { + fprintf(stderr, "%s: unable to open \"%s\" for reading\n", + progName, optstate->value); + return -1; + } + break; + + case 'k': + keyName = strdup(optstate->value); + break; + + case 'o': + outFile = fopen(optstate->value, "wb"); + if (!outFile) { + fprintf(stderr, "%s: unable to open \"%s\" for writing\n", + progName, optstate->value); + return -1; + } + break; + case 'p': + pwdata.source = PW_PLAINTEXT; + pwdata.data = strdup(optstate->value); + break; + + case 'f': + pwdata.source = PW_FROMFILE; + pwdata.data = PORT_Strdup(optstate->value); + break; + } + } + PL_DestroyOptState(optstate); + + if (!keyName) + Usage(progName); + + if (!inFile) + inFile = PR_STDIN; + if (!outFile) + outFile = stdout; + + /* Call the initialization routines */ + PR_Init(PR_SYSTEM_THREAD, PR_PRIORITY_NORMAL, 1); + rv = NSS_Init(SECU_ConfigDirectory(NULL)); + if (rv != SECSuccess) { + SECU_PrintPRandOSError(progName); + goto loser; + } + + PK11_SetPasswordFunc(SECU_GetModulePassword); + + /* open cert database */ + certHandle = CERT_GetDefaultCertDB(); + if (certHandle == NULL) { + rv = SECFailure; + goto loser; + } + + /* find cert */ + cert = CERT_FindCertByNickname(certHandle, keyName); + if (cert == NULL) { + SECU_PrintError(progName, + "the corresponding cert for key \"%s\" does not exist", + keyName); + rv = SECFailure; + goto loser; + } + + if (SignFile(outFile, inFile, cert, encapsulated)) { + SECU_PrintError(progName, "problem signing data"); + rv = SECFailure; + goto loser; + } + +loser: + if (pwdata.data) { + PORT_Free(pwdata.data); + } + if (keyName) { + PORT_Free(keyName); + } + if (cert) { + CERT_DestroyCertificate(cert); + } + if (inFile && inFile != PR_STDIN) { + PR_Close(inFile); + } + if (outFile && outFile != stdout) { + fclose(outFile); + } + if (NSS_Shutdown() != SECSuccess) { + SECU_PrintError(progName, "NSS shutdown:"); + exit(1); + } + + return (rv != SECSuccess); +} |