700 lines
23 KiB
C
700 lines
23 KiB
C
/*
|
|
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 1999-2004 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
/* S/MIME utility function */
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "apps.h"
|
|
#include <openssl/crypto.h>
|
|
#include <openssl/pem.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/x509_vfy.h>
|
|
#include <openssl/x509v3.h>
|
|
|
|
static int save_certs(char *signerfile, STACK_OF(X509) *signers);
|
|
static int smime_cb(int ok, X509_STORE_CTX *ctx);
|
|
|
|
#define SMIME_OP 0x10
|
|
#define SMIME_IP 0x20
|
|
#define SMIME_SIGNERS 0x40
|
|
#define SMIME_ENCRYPT (1 | SMIME_OP)
|
|
#define SMIME_DECRYPT (2 | SMIME_IP)
|
|
#define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS)
|
|
#define SMIME_VERIFY (4 | SMIME_IP)
|
|
#define SMIME_PK7OUT (5 | SMIME_IP | SMIME_OP)
|
|
#define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
|
|
|
|
typedef enum OPTION_choice {
|
|
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
|
|
OPT_ENCRYPT, OPT_DECRYPT, OPT_SIGN, OPT_RESIGN, OPT_VERIFY,
|
|
OPT_PK7OUT, OPT_TEXT, OPT_NOINTERN, OPT_NOVERIFY, OPT_NOCHAIN,
|
|
OPT_NOCERTS, OPT_NOATTR, OPT_NODETACH, OPT_NOSMIMECAP,
|
|
OPT_BINARY, OPT_NOSIGS, OPT_STREAM, OPT_INDEF, OPT_NOINDEF,
|
|
OPT_NOOLDMIME, OPT_CRLFEOL, OPT_RAND, OPT_ENGINE, OPT_PASSIN,
|
|
OPT_TO, OPT_FROM, OPT_SUBJECT, OPT_SIGNER, OPT_RECIP, OPT_MD,
|
|
OPT_CIPHER, OPT_INKEY, OPT_KEYFORM, OPT_CERTFILE, OPT_CAFILE,
|
|
OPT_V_ENUM,
|
|
OPT_CAPATH, OPT_IN, OPT_INFORM, OPT_OUT, OPT_OUTFORM, OPT_CONTENT
|
|
} OPTION_CHOICE;
|
|
|
|
OPTIONS smime_options[] = {
|
|
{OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
|
|
{OPT_HELP_STR, 1, '-',
|
|
" cert.pem... recipient certs for encryption\n"},
|
|
{OPT_HELP_STR, 1, '-', "Valid options are:\n"},
|
|
{"help", OPT_HELP, '-', "Display this summary"},
|
|
{"encrypt", OPT_ENCRYPT, '-', "Encrypt message"},
|
|
{"decrypt", OPT_DECRYPT, '-', "Decrypt encrypted message"},
|
|
{"sign", OPT_SIGN, '-', "Sign message"},
|
|
{"verify", OPT_VERIFY, '-', "Verify signed message"},
|
|
{"pk7out", OPT_PK7OUT, '-', "Output PKCS#7 structure"},
|
|
{"nointern", OPT_NOINTERN, '-',
|
|
"Don't search certificates in message for signer"},
|
|
{"nosigs", OPT_NOSIGS, '-', "Don't verify message signature"},
|
|
{"noverify", OPT_NOVERIFY, '-', "Don't verify signers certificate"},
|
|
{"nocerts", OPT_NOCERTS, '-',
|
|
"Don't include signers certificate when signing"},
|
|
{"nodetach", OPT_NODETACH, '-', "Use opaque signing"},
|
|
{"noattr", OPT_NOATTR, '-', "Don't include any signed attributes"},
|
|
{"binary", OPT_BINARY, '-', "Don't translate message to text"},
|
|
{"certfile", OPT_CERTFILE, '<', "Other certificates file"},
|
|
{"signer", OPT_SIGNER, '<', "Signer certificate file"},
|
|
{"recip", OPT_RECIP, '<', "Recipient certificate file for decryption"},
|
|
{"in", OPT_IN, '<', "Input file"},
|
|
{"inform", OPT_INFORM, 'F', "Input format SMIME (default), PEM or DER"},
|
|
{"inkey", OPT_INKEY, '<',
|
|
"Input private key (if not signer or recipient)"},
|
|
{"keyform", OPT_KEYFORM, 'f', "Input private key format (PEM or ENGINE)"},
|
|
{"out", OPT_OUT, '>', "Output file"},
|
|
{"outform", OPT_OUTFORM, 'F',
|
|
"Output format SMIME (default), PEM or DER"},
|
|
{"content", OPT_CONTENT, '<',
|
|
"Supply or override content for detached signature"},
|
|
{"to", OPT_TO, 's', "To address"},
|
|
{"from", OPT_FROM, 's', "From address"},
|
|
{"subject", OPT_SUBJECT, 's', "Subject"},
|
|
{"text", OPT_TEXT, '-', "Include or delete text MIME headers"},
|
|
{"CApath", OPT_CAPATH, '/', "Trusted certificates directory"},
|
|
{"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
|
|
{"resign", OPT_RESIGN, '-'},
|
|
{"nochain", OPT_NOCHAIN, '-'},
|
|
{"nosmimecap", OPT_NOSMIMECAP, '-'},
|
|
{"stream", OPT_STREAM, '-'},
|
|
{"indef", OPT_INDEF, '-'},
|
|
{"noindef", OPT_NOINDEF, '-'},
|
|
{"nooldmime", OPT_NOOLDMIME, '-'},
|
|
{"crlfeol", OPT_CRLFEOL, '-'},
|
|
{"rand", OPT_RAND, 's',
|
|
"Load the file(s) into the random number generator"},
|
|
{"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
|
|
{"md", OPT_MD, 's'},
|
|
{"", OPT_CIPHER, '-', "Any supported cipher"},
|
|
OPT_V_OPTIONS,
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
|
|
#endif
|
|
{NULL}
|
|
};
|
|
|
|
int smime_main(int argc, char **argv)
|
|
{
|
|
BIO *in = NULL, *out = NULL, *indata = NULL;
|
|
EVP_PKEY *key = NULL;
|
|
PKCS7 *p7 = NULL;
|
|
STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
|
|
STACK_OF(X509) *encerts = NULL, *other = NULL;
|
|
X509 *cert = NULL, *recip = NULL, *signer = NULL;
|
|
X509_STORE *store = NULL;
|
|
X509_VERIFY_PARAM *vpm = NULL;
|
|
const EVP_CIPHER *cipher = NULL;
|
|
const EVP_MD *sign_md = NULL;
|
|
char *CAfile = NULL, *CApath = NULL, *inrand = NULL;
|
|
char *certfile = NULL, *keyfile = NULL, *contfile = NULL, *prog;
|
|
char *infile = NULL, *outfile = NULL, *signerfile = NULL, *recipfile =
|
|
NULL;
|
|
char *passinarg = NULL, *passin = NULL, *to = NULL, *from =
|
|
NULL, *subject = NULL;
|
|
const char *inmode = "r", *outmode = "w";
|
|
OPTION_CHOICE o;
|
|
int flags = PKCS7_DETACHED, operation = 0, ret = 0, need_rand = 0, indef =
|
|
0;
|
|
int informat = FORMAT_SMIME, outformat = FORMAT_SMIME, keyform =
|
|
FORMAT_PEM;
|
|
int vpmtouched = 0, rv = 0;
|
|
ENGINE *e = NULL;
|
|
|
|
if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
|
|
return 1;
|
|
|
|
prog = opt_init(argc, argv, smime_options);
|
|
while ((o = opt_next()) != OPT_EOF) {
|
|
switch (o) {
|
|
case OPT_EOF:
|
|
case OPT_ERR:
|
|
opthelp:
|
|
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
|
|
goto end;
|
|
case OPT_HELP:
|
|
opt_help(smime_options);
|
|
ret = 0;
|
|
goto end;
|
|
case OPT_INFORM:
|
|
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
|
|
goto opthelp;
|
|
break;
|
|
case OPT_IN:
|
|
infile = opt_arg();
|
|
break;
|
|
case OPT_OUTFORM:
|
|
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
|
|
goto opthelp;
|
|
break;
|
|
case OPT_OUT:
|
|
outfile = opt_arg();
|
|
break;
|
|
case OPT_ENCRYPT:
|
|
operation = SMIME_ENCRYPT;
|
|
break;
|
|
case OPT_DECRYPT:
|
|
operation = SMIME_DECRYPT;
|
|
break;
|
|
case OPT_SIGN:
|
|
operation = SMIME_SIGN;
|
|
break;
|
|
case OPT_RESIGN:
|
|
operation = SMIME_RESIGN;
|
|
break;
|
|
case OPT_VERIFY:
|
|
operation = SMIME_VERIFY;
|
|
break;
|
|
case OPT_PK7OUT:
|
|
operation = SMIME_PK7OUT;
|
|
break;
|
|
case OPT_TEXT:
|
|
flags |= PKCS7_TEXT;
|
|
break;
|
|
case OPT_NOINTERN:
|
|
flags |= PKCS7_NOINTERN;
|
|
break;
|
|
case OPT_NOVERIFY:
|
|
flags |= PKCS7_NOVERIFY;
|
|
break;
|
|
case OPT_NOCHAIN:
|
|
flags |= PKCS7_NOCHAIN;
|
|
break;
|
|
case OPT_NOCERTS:
|
|
flags |= PKCS7_NOCERTS;
|
|
break;
|
|
case OPT_NOATTR:
|
|
flags |= PKCS7_NOATTR;
|
|
break;
|
|
case OPT_NODETACH:
|
|
flags &= ~PKCS7_DETACHED;
|
|
break;
|
|
case OPT_NOSMIMECAP:
|
|
flags |= PKCS7_NOSMIMECAP;
|
|
break;
|
|
case OPT_BINARY:
|
|
flags |= PKCS7_BINARY;
|
|
break;
|
|
case OPT_NOSIGS:
|
|
flags |= PKCS7_NOSIGS;
|
|
break;
|
|
case OPT_STREAM:
|
|
case OPT_INDEF:
|
|
indef = 1;
|
|
break;
|
|
case OPT_NOINDEF:
|
|
indef = 0;
|
|
break;
|
|
case OPT_NOOLDMIME:
|
|
flags |= PKCS7_NOOLDMIMETYPE;
|
|
break;
|
|
case OPT_CRLFEOL:
|
|
flags |= PKCS7_CRLFEOL;
|
|
break;
|
|
case OPT_RAND:
|
|
inrand = opt_arg();
|
|
need_rand = 1;
|
|
break;
|
|
case OPT_ENGINE:
|
|
e = setup_engine(opt_arg(), 0);
|
|
break;
|
|
case OPT_PASSIN:
|
|
passinarg = opt_arg();
|
|
break;
|
|
case OPT_TO:
|
|
to = opt_arg();
|
|
break;
|
|
case OPT_FROM:
|
|
from = opt_arg();
|
|
break;
|
|
case OPT_SUBJECT:
|
|
subject = opt_arg();
|
|
break;
|
|
case OPT_SIGNER:
|
|
/* If previous -signer argument add signer to list */
|
|
if (signerfile) {
|
|
if (sksigners == NULL
|
|
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
|
|
goto end;
|
|
sk_OPENSSL_STRING_push(sksigners, signerfile);
|
|
if (keyfile == NULL)
|
|
keyfile = signerfile;
|
|
if (skkeys == NULL
|
|
&& (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
|
|
goto end;
|
|
sk_OPENSSL_STRING_push(skkeys, keyfile);
|
|
keyfile = NULL;
|
|
}
|
|
signerfile = opt_arg();
|
|
break;
|
|
case OPT_RECIP:
|
|
recipfile = opt_arg();
|
|
break;
|
|
case OPT_MD:
|
|
if (!opt_md(opt_arg(), &sign_md))
|
|
goto opthelp;
|
|
break;
|
|
case OPT_CIPHER:
|
|
if (!opt_cipher(opt_unknown(), &cipher))
|
|
goto opthelp;
|
|
break;
|
|
case OPT_INKEY:
|
|
/* If previous -inkey arument add signer to list */
|
|
if (keyfile) {
|
|
if (signerfile == NULL) {
|
|
BIO_printf(bio_err,
|
|
"%s: Must have -signer before -inkey\n", prog);
|
|
goto opthelp;
|
|
}
|
|
if (sksigners == NULL
|
|
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
|
|
goto end;
|
|
sk_OPENSSL_STRING_push(sksigners, signerfile);
|
|
signerfile = NULL;
|
|
if (skkeys == NULL
|
|
&& (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
|
|
goto end;
|
|
sk_OPENSSL_STRING_push(skkeys, keyfile);
|
|
}
|
|
keyfile = opt_arg();
|
|
break;
|
|
case OPT_KEYFORM:
|
|
if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
|
|
goto opthelp;
|
|
break;
|
|
case OPT_CERTFILE:
|
|
certfile = opt_arg();
|
|
break;
|
|
case OPT_CAFILE:
|
|
CAfile = opt_arg();
|
|
break;
|
|
case OPT_CAPATH:
|
|
CApath = opt_arg();
|
|
break;
|
|
case OPT_CONTENT:
|
|
contfile = opt_arg();
|
|
break;
|
|
case OPT_V_CASES:
|
|
if (!opt_verify(o, vpm))
|
|
goto opthelp;
|
|
vpmtouched++;
|
|
break;
|
|
}
|
|
}
|
|
argc = opt_num_rest();
|
|
argv = opt_rest();
|
|
|
|
if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) {
|
|
BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
|
|
goto opthelp;
|
|
}
|
|
|
|
if (operation & SMIME_SIGNERS) {
|
|
/* Check to see if any final signer needs to be appended */
|
|
if (keyfile && !signerfile) {
|
|
BIO_puts(bio_err, "Illegal -inkey without -signer\n");
|
|
goto opthelp;
|
|
}
|
|
if (signerfile) {
|
|
if (!sksigners
|
|
&& (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
|
|
goto end;
|
|
sk_OPENSSL_STRING_push(sksigners, signerfile);
|
|
if (!skkeys && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
|
|
goto end;
|
|
if (!keyfile)
|
|
keyfile = signerfile;
|
|
sk_OPENSSL_STRING_push(skkeys, keyfile);
|
|
}
|
|
if (!sksigners) {
|
|
BIO_printf(bio_err, "No signer certificate specified\n");
|
|
goto opthelp;
|
|
}
|
|
signerfile = NULL;
|
|
keyfile = NULL;
|
|
need_rand = 1;
|
|
} else if (operation == SMIME_DECRYPT) {
|
|
if (!recipfile && !keyfile) {
|
|
BIO_printf(bio_err,
|
|
"No recipient certificate or key specified\n");
|
|
goto opthelp;
|
|
}
|
|
} else if (operation == SMIME_ENCRYPT) {
|
|
if (argc == 0) {
|
|
BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
|
|
goto opthelp;
|
|
}
|
|
need_rand = 1;
|
|
} else if (!operation)
|
|
goto opthelp;
|
|
|
|
if (!app_passwd(passinarg, NULL, &passin, NULL)) {
|
|
BIO_printf(bio_err, "Error getting password\n");
|
|
goto end;
|
|
}
|
|
|
|
if (need_rand) {
|
|
app_RAND_load_file(NULL, (inrand != NULL));
|
|
if (inrand != NULL)
|
|
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
|
|
app_RAND_load_files(inrand));
|
|
}
|
|
|
|
ret = 2;
|
|
|
|
if (!(operation & SMIME_SIGNERS))
|
|
flags &= ~PKCS7_DETACHED;
|
|
|
|
if (operation & SMIME_OP) {
|
|
if (outformat == FORMAT_ASN1)
|
|
outmode = "wb";
|
|
} else {
|
|
if (flags & PKCS7_BINARY)
|
|
outmode = "wb";
|
|
}
|
|
|
|
if (operation & SMIME_IP) {
|
|
if (informat == FORMAT_ASN1)
|
|
inmode = "rb";
|
|
} else {
|
|
if (flags & PKCS7_BINARY)
|
|
inmode = "rb";
|
|
}
|
|
|
|
if (operation == SMIME_ENCRYPT) {
|
|
if (!cipher) {
|
|
#ifndef OPENSSL_NO_DES
|
|
cipher = EVP_des_ede3_cbc();
|
|
#else
|
|
BIO_printf(bio_err, "No cipher selected\n");
|
|
goto end;
|
|
#endif
|
|
}
|
|
encerts = sk_X509_new_null();
|
|
if (!encerts)
|
|
goto end;
|
|
while (*argv) {
|
|
cert = load_cert(*argv, FORMAT_PEM,
|
|
NULL, e, "recipient certificate file");
|
|
if (cert == NULL)
|
|
goto end;
|
|
sk_X509_push(encerts, cert);
|
|
cert = NULL;
|
|
argv++;
|
|
}
|
|
}
|
|
|
|
if (certfile) {
|
|
if ((other = load_certs(certfile, FORMAT_PEM, NULL,
|
|
e, "certificate file")) == NULL) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (recipfile && (operation == SMIME_DECRYPT)) {
|
|
if ((recip = load_cert(recipfile, FORMAT_PEM, NULL,
|
|
e, "recipient certificate file")) == NULL) {
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (operation == SMIME_DECRYPT) {
|
|
if (!keyfile)
|
|
keyfile = recipfile;
|
|
} else if (operation == SMIME_SIGN) {
|
|
if (!keyfile)
|
|
keyfile = signerfile;
|
|
} else
|
|
keyfile = NULL;
|
|
|
|
if (keyfile) {
|
|
key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
|
|
if (!key)
|
|
goto end;
|
|
}
|
|
|
|
in = bio_open_default(infile, inmode);
|
|
if (in == NULL)
|
|
goto end;
|
|
|
|
if (operation & SMIME_IP) {
|
|
if (informat == FORMAT_SMIME)
|
|
p7 = SMIME_read_PKCS7(in, &indata);
|
|
else if (informat == FORMAT_PEM)
|
|
p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
|
|
else if (informat == FORMAT_ASN1)
|
|
p7 = d2i_PKCS7_bio(in, NULL);
|
|
else {
|
|
BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
|
|
goto end;
|
|
}
|
|
|
|
if (!p7) {
|
|
BIO_printf(bio_err, "Error reading S/MIME message\n");
|
|
goto end;
|
|
}
|
|
if (contfile) {
|
|
BIO_free(indata);
|
|
if ((indata = BIO_new_file(contfile, "rb")) == NULL) {
|
|
BIO_printf(bio_err, "Can't read content file %s\n", contfile);
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
|
|
out = bio_open_default(outfile, outmode);
|
|
if (out == NULL)
|
|
goto end;
|
|
|
|
if (operation == SMIME_VERIFY) {
|
|
if ((store = setup_verify(CAfile, CApath)) == NULL)
|
|
goto end;
|
|
X509_STORE_set_verify_cb(store, smime_cb);
|
|
if (vpmtouched)
|
|
X509_STORE_set1_param(store, vpm);
|
|
}
|
|
|
|
ret = 3;
|
|
|
|
if (operation == SMIME_ENCRYPT) {
|
|
if (indef)
|
|
flags |= PKCS7_STREAM;
|
|
p7 = PKCS7_encrypt(encerts, in, cipher, flags);
|
|
} else if (operation & SMIME_SIGNERS) {
|
|
int i;
|
|
/*
|
|
* If detached data content we only enable streaming if S/MIME output
|
|
* format.
|
|
*/
|
|
if (operation == SMIME_SIGN) {
|
|
if (flags & PKCS7_DETACHED) {
|
|
if (outformat == FORMAT_SMIME)
|
|
flags |= PKCS7_STREAM;
|
|
} else if (indef)
|
|
flags |= PKCS7_STREAM;
|
|
flags |= PKCS7_PARTIAL;
|
|
p7 = PKCS7_sign(NULL, NULL, other, in, flags);
|
|
if (!p7)
|
|
goto end;
|
|
if (flags & PKCS7_NOCERTS) {
|
|
for (i = 0; i < sk_X509_num(other); i++) {
|
|
X509 *x = sk_X509_value(other, i);
|
|
PKCS7_add_certificate(p7, x);
|
|
}
|
|
}
|
|
} else
|
|
flags |= PKCS7_REUSE_DIGEST;
|
|
for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
|
|
signerfile = sk_OPENSSL_STRING_value(sksigners, i);
|
|
keyfile = sk_OPENSSL_STRING_value(skkeys, i);
|
|
signer = load_cert(signerfile, FORMAT_PEM, NULL,
|
|
e, "signer certificate");
|
|
if (!signer)
|
|
goto end;
|
|
key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
|
|
if (!key)
|
|
goto end;
|
|
if (!PKCS7_sign_add_signer(p7, signer, key, sign_md, flags))
|
|
goto end;
|
|
X509_free(signer);
|
|
signer = NULL;
|
|
EVP_PKEY_free(key);
|
|
key = NULL;
|
|
}
|
|
/* If not streaming or resigning finalize structure */
|
|
if ((operation == SMIME_SIGN) && !(flags & PKCS7_STREAM)) {
|
|
if (!PKCS7_final(p7, in, flags))
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (!p7) {
|
|
BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
|
|
goto end;
|
|
}
|
|
|
|
ret = 4;
|
|
if (operation == SMIME_DECRYPT) {
|
|
if (!PKCS7_decrypt(p7, key, recip, out, flags)) {
|
|
BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
|
|
goto end;
|
|
}
|
|
} else if (operation == SMIME_VERIFY) {
|
|
STACK_OF(X509) *signers;
|
|
if (PKCS7_verify(p7, other, store, indata, out, flags))
|
|
BIO_printf(bio_err, "Verification successful\n");
|
|
else {
|
|
BIO_printf(bio_err, "Verification failure\n");
|
|
goto end;
|
|
}
|
|
signers = PKCS7_get0_signers(p7, other, flags);
|
|
if (!save_certs(signerfile, signers)) {
|
|
BIO_printf(bio_err, "Error writing signers to %s\n", signerfile);
|
|
ret = 5;
|
|
goto end;
|
|
}
|
|
sk_X509_free(signers);
|
|
} else if (operation == SMIME_PK7OUT)
|
|
PEM_write_bio_PKCS7(out, p7);
|
|
else {
|
|
if (to)
|
|
BIO_printf(out, "To: %s\n", to);
|
|
if (from)
|
|
BIO_printf(out, "From: %s\n", from);
|
|
if (subject)
|
|
BIO_printf(out, "Subject: %s\n", subject);
|
|
if (outformat == FORMAT_SMIME) {
|
|
if (operation == SMIME_RESIGN)
|
|
rv = SMIME_write_PKCS7(out, p7, indata, flags);
|
|
else
|
|
rv = SMIME_write_PKCS7(out, p7, in, flags);
|
|
} else if (outformat == FORMAT_PEM)
|
|
rv = PEM_write_bio_PKCS7_stream(out, p7, in, flags);
|
|
else if (outformat == FORMAT_ASN1)
|
|
rv = i2d_PKCS7_bio_stream(out, p7, in, flags);
|
|
else {
|
|
BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
|
|
goto end;
|
|
}
|
|
if (rv == 0) {
|
|
BIO_printf(bio_err, "Error writing output\n");
|
|
ret = 3;
|
|
goto end;
|
|
}
|
|
}
|
|
ret = 0;
|
|
end:
|
|
if (need_rand)
|
|
app_RAND_write_file(NULL);
|
|
if (ret)
|
|
ERR_print_errors(bio_err);
|
|
sk_X509_pop_free(encerts, X509_free);
|
|
sk_X509_pop_free(other, X509_free);
|
|
X509_VERIFY_PARAM_free(vpm);
|
|
sk_OPENSSL_STRING_free(sksigners);
|
|
sk_OPENSSL_STRING_free(skkeys);
|
|
X509_STORE_free(store);
|
|
X509_free(cert);
|
|
X509_free(recip);
|
|
X509_free(signer);
|
|
EVP_PKEY_free(key);
|
|
PKCS7_free(p7);
|
|
BIO_free(in);
|
|
BIO_free(indata);
|
|
BIO_free_all(out);
|
|
OPENSSL_free(passin);
|
|
return (ret);
|
|
}
|
|
|
|
static int save_certs(char *signerfile, STACK_OF(X509) *signers)
|
|
{
|
|
int i;
|
|
BIO *tmp;
|
|
if (!signerfile)
|
|
return 1;
|
|
tmp = BIO_new_file(signerfile, "w");
|
|
if (!tmp)
|
|
return 0;
|
|
for (i = 0; i < sk_X509_num(signers); i++)
|
|
PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
|
|
BIO_free(tmp);
|
|
return 1;
|
|
}
|
|
|
|
/* Minimal callback just to output policy info (if any) */
|
|
|
|
static int smime_cb(int ok, X509_STORE_CTX *ctx)
|
|
{
|
|
int error;
|
|
|
|
error = X509_STORE_CTX_get_error(ctx);
|
|
|
|
if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
|
|
&& ((error != X509_V_OK) || (ok != 2)))
|
|
return ok;
|
|
|
|
policies_print(ctx);
|
|
|
|
return ok;
|
|
|
|
}
|