/* apps/cms.c */

/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL

* project.

*/

/* ====================================================================

* Copyright (c) 2008 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.

* ====================================================================

*/

/* CMS utility function */

#include <stdio.h>

#include <string.h>

#include "apps.h"

#ifndef OPENSSL_NO_CMS

#include <openssl/crypto.h>

#include <openssl/pem.h>

#include <openssl/err.h>

#include <openssl/x509_vfy.h>

#include <openssl/x509v3.h>

#include <openssl/cms.h>

#undef PROG

#define PROG cms_main

static int save_certs(char *signerfile, STACK_OF(X509) *signers);

static int cms_cb(int ok, X509_STORE_CTX *ctx);

static void receipt_request_print(BIO *out, CMS_ContentInfo *cms);

static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING) *rr_to,

int rr_allorfirst,

STACK_OF(OPENSSL_STRING) *rr_from);

#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_CMSOUT (5 | SMIME_IP | SMIME_OP)

#define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)

#define SMIME_DATAOUT (7 | SMIME_IP)

#define SMIME_DATA_CREATE (8 | SMIME_OP)

#define SMIME_DIGEST_VERIFY (9 | SMIME_IP)

#define SMIME_DIGEST_CREATE (10 | SMIME_OP)

#define SMIME_UNCOMPRESS (11 | SMIME_IP)

#define SMIME_COMPRESS (12 | SMIME_OP)

#define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)

#define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)

#define SMIME_SIGN_RECEIPT (15 | SMIME_IP | SMIME_OP)

#define SMIME_VERIFY_RECEIPT (16 | SMIME_IP)

int verify_err = 0;

int MAIN(int, char **);

int MAIN(int argc, char **argv)

{

ENGINE *e = NULL;

int operation = 0;

int ret = 0;

char **args;

const char *inmode = "r", *outmode = "w";

char *infile = NULL, *outfile = NULL, *rctfile = NULL;

char *signerfile = NULL, *recipfile = NULL;

STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;

char *certfile = NULL, *keyfile = NULL, *contfile=NULL;

char *certsoutfile = NULL;

const EVP_CIPHER *cipher = NULL;

CMS_ContentInfo *cms = NULL, *rcms = NULL;

X509_STORE *store = NULL;

X509 *cert = NULL, *recip = NULL, *signer = NULL;

EVP_PKEY *key = NULL;

STACK_OF(X509) *encerts = NULL, *other = NULL;

BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;

int badarg = 0;

int flags = CMS_DETACHED, noout = 0, print = 0;

int verify_retcode = 0;

int rr_print = 0, rr_allorfirst = -1;

STACK_OF(OPENSSL_STRING) *rr_to = NULL, *rr_from = NULL;

CMS_ReceiptRequest *rr = NULL;

char *to = NULL, *from = NULL, *subject = NULL;

char *CAfile = NULL, *CApath = NULL;

char *passargin = NULL, *passin = NULL;

char *inrand = NULL;

int need_rand = 0;

const EVP_MD *sign_md = NULL;

int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;

int rctformat = FORMAT_SMIME, keyform = FORMAT_PEM;

#ifndef OPENSSL_NO_ENGINE

char *engine=NULL;

#endif

unsigned char *secret_key = NULL, *secret_keyid = NULL;

unsigned char *pwri_pass = NULL, *pwri_tmp = NULL;

size_t secret_keylen = 0, secret_keyidlen = 0;

ASN1_OBJECT *econtent_type = NULL;

X509_VERIFY_PARAM *vpm = NULL;

args = argv + 1;

ret = 1;

apps_startup();

if (bio_err == NULL)

{

if ((bio_err = BIO_new(BIO_s_file())) != NULL)

BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);

}

if (!load_config(bio_err, NULL))

goto end;

while (!badarg && *args && *args[0] == '-')

{

if (!strcmp (*args, "-encrypt"))

operation = SMIME_ENCRYPT;

else if (!strcmp (*args, "-decrypt"))

operation = SMIME_DECRYPT;

else if (!strcmp (*args, "-sign"))

operation = SMIME_SIGN;

else if (!strcmp (*args, "-sign_receipt"))

operation = SMIME_SIGN_RECEIPT;

else if (!strcmp (*args, "-resign"))

operation = SMIME_RESIGN;

else if (!strcmp (*args, "-verify"))

operation = SMIME_VERIFY;

else if (!strcmp (*args, "-verify_retcode"))

verify_retcode = 1;

else if (!strcmp(*args,"-verify_receipt"))

{

operation = SMIME_VERIFY_RECEIPT;

if (!args[1])

goto argerr;

args++;

rctfile = *args;

}

else if (!strcmp (*args, "-cmsout"))

operation = SMIME_CMSOUT;

else if (!strcmp (*args, "-data_out"))

operation = SMIME_DATAOUT;

else if (!strcmp (*args, "-data_create"))

operation = SMIME_DATA_CREATE;

else if (!strcmp (*args, "-digest_verify"))

operation = SMIME_DIGEST_VERIFY;

else if (!strcmp (*args, "-digest_create"))

operation = SMIME_DIGEST_CREATE;

else if (!strcmp (*args, "-compress"))

operation = SMIME_COMPRESS;

else if (!strcmp (*args, "-uncompress"))

operation = SMIME_UNCOMPRESS;

else if (!strcmp (*args, "-EncryptedData_decrypt"))

operation = SMIME_ENCRYPTED_DECRYPT;

else if (!strcmp (*args, "-EncryptedData_encrypt"))

operation = SMIME_ENCRYPTED_ENCRYPT;

#ifndef OPENSSL_NO_DES

else if (!strcmp (*args, "-des3"))

cipher = EVP_des_ede3_cbc();

else if (!strcmp (*args, "-des"))

cipher = EVP_des_cbc();

#endif

#ifndef OPENSSL_NO_SEED

else if (!strcmp (*args, "-seed"))

cipher = EVP_seed_cbc();

#endif

#ifndef OPENSSL_NO_RC2

else if (!strcmp (*args, "-rc2-40"))

cipher = EVP_rc2_40_cbc();

else if (!strcmp (*args, "-rc2-128"))

cipher = EVP_rc2_cbc();

else if (!strcmp (*args, "-rc2-64"))

cipher = EVP_rc2_64_cbc();

#endif

#ifndef OPENSSL_NO_AES

else if (!strcmp(*args,"-aes128"))

cipher = EVP_aes_128_cbc();

else if (!strcmp(*args,"-aes192"))

cipher = EVP_aes_192_cbc();

else if (!strcmp(*args,"-aes256"))

cipher = EVP_aes_256_cbc();

#endif

#ifndef OPENSSL_NO_CAMELLIA

else if (!strcmp(*args,"-camellia128"))

cipher = EVP_camellia_128_cbc();

else if (!strcmp(*args,"-camellia192"))

cipher = EVP_camellia_192_cbc();

else if (!strcmp(*args,"-camellia256"))

cipher = EVP_camellia_256_cbc();

#endif

else if (!strcmp (*args, "-text"))

flags |= CMS_TEXT;

else if (!strcmp (*args, "-nointern"))

flags |= CMS_NOINTERN;

else if (!strcmp (*args, "-noverify")

|| !strcmp (*args, "-no_signer_cert_verify"))

flags |= CMS_NO_SIGNER_CERT_VERIFY;

else if (!strcmp (*args, "-nocerts"))

flags |= CMS_NOCERTS;

else if (!strcmp (*args, "-noattr"))

flags |= CMS_NOATTR;

else if (!strcmp (*args, "-nodetach"))

flags &= ~CMS_DETACHED;

else if (!strcmp (*args, "-nosmimecap"))

flags |= CMS_NOSMIMECAP;

else if (!strcmp (*args, "-binary"))

flags |= CMS_BINARY;

else if (!strcmp (*args, "-keyid"))

flags |= CMS_USE_KEYID;

else if (!strcmp (*args, "-nosigs"))

flags |= CMS_NOSIGS;

else if (!strcmp (*args, "-no_content_verify"))

flags |= CMS_NO_CONTENT_VERIFY;

else if (!strcmp (*args, "-no_attr_verify"))

flags |= CMS_NO_ATTR_VERIFY;

else if (!strcmp (*args, "-stream"))

flags |= CMS_STREAM;

else if (!strcmp (*args, "-indef"))

flags |= CMS_STREAM;

else if (!strcmp (*args, "-noindef"))

flags &= ~CMS_STREAM;

else if (!strcmp (*args, "-nooldmime"))

flags |= CMS_NOOLDMIMETYPE;

else if (!strcmp (*args, "-crlfeol"))

flags |= CMS_CRLFEOL;

else if (!strcmp (*args, "-noout"))

noout = 1;

else if (!strcmp (*args, "-receipt_request_print"))

rr_print = 1;

else if (!strcmp (*args, "-receipt_request_all"))

rr_allorfirst = 0;

else if (!strcmp (*args, "-receipt_request_first"))

rr_allorfirst = 1;

else if (!strcmp(*args,"-receipt_request_from"))

{

if (!args[1])

goto argerr;

args++;

if (!rr_from)

rr_from = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(rr_from, *args);

}

else if (!strcmp(*args,"-receipt_request_to"))

{

if (!args[1])

goto argerr;

args++;

if (!rr_to)

rr_to = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(rr_to, *args);

}

else if (!strcmp (*args, "-print"))

{

noout = 1;

print = 1;

}

else if (!strcmp(*args,"-secretkey"))

{

long ltmp;

if (!args[1])

goto argerr;

args++;

secret_key = string_to_hex(*args, &ltmp);

if (!secret_key)

{

BIO_printf(bio_err, "Invalid key %s\n", *args);

goto argerr;

}

secret_keylen = (size_t)ltmp;

}

else if (!strcmp(*args,"-secretkeyid"))

{

long ltmp;

if (!args[1])

goto argerr;

args++;

secret_keyid = string_to_hex(*args, &ltmp);

if (!secret_keyid)

{

BIO_printf(bio_err, "Invalid id %s\n", *args);

goto argerr;

}

secret_keyidlen = (size_t)ltmp;

}

else if (!strcmp(*args,"-pwri_password"))

{

if (!args[1])

goto argerr;

args++;

pwri_pass = (unsigned char *)*args;

}

else if (!strcmp(*args,"-econtent_type"))

{

if (!args[1])

goto argerr;

args++;

econtent_type = OBJ_txt2obj(*args, 0);

if (!econtent_type)

{

BIO_printf(bio_err, "Invalid OID %s\n", *args);

goto argerr;

}

}

else if (!strcmp(*args,"-rand"))

{

if (!args[1])

goto argerr;

args++;

inrand = *args;

need_rand = 1;

}

#ifndef OPENSSL_NO_ENGINE

else if (!strcmp(*args,"-engine"))

{

if (!args[1])

goto argerr;

engine = *++args;

}

#endif

else if (!strcmp(*args,"-passin"))

{

if (!args[1])

goto argerr;

passargin = *++args;

}

else if (!strcmp (*args, "-to"))

{

if (!args[1])

goto argerr;

to = *++args;

}

else if (!strcmp (*args, "-from"))

{

if (!args[1])

goto argerr;

from = *++args;

}

else if (!strcmp (*args, "-subject"))

{

if (!args[1])

goto argerr;

subject = *++args;

}

else if (!strcmp (*args, "-signer"))

{

if (!args[1])

goto argerr;

/* If previous -signer argument add signer to list */

if (signerfile)

{

if (!sksigners)

sksigners = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(sksigners, signerfile);

if (!keyfile)

keyfile = signerfile;

if (!skkeys)

skkeys = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(skkeys, keyfile);

keyfile = NULL;

}

signerfile = *++args;

}

else if (!strcmp (*args, "-recip"))

{

if (!args[1])

goto argerr;

recipfile = *++args;

}

else if (!strcmp (*args, "-certsout"))

{

if (!args[1])

goto argerr;

certsoutfile = *++args;

}

else if (!strcmp (*args, "-md"))

{

if (!args[1])

goto argerr;

sign_md = EVP_get_digestbyname(*++args);

if (sign_md == NULL)

{

BIO_printf(bio_err, "Unknown digest %s\n",

*args);

goto argerr;

}

}

else if (!strcmp (*args, "-inkey"))

{

if (!args[1])

goto argerr;

/* If previous -inkey arument add signer to list */

if (keyfile)

{

if (!signerfile)

{

BIO_puts(bio_err, "Illegal -inkey without -signer\n");

goto argerr;

}

if (!sksigners)

sksigners = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(sksigners, signerfile);

signerfile = NULL;

if (!skkeys)

skkeys = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(skkeys, keyfile);

}

keyfile = *++args;

}

else if (!strcmp (*args, "-keyform"))

{

if (!args[1])

goto argerr;

keyform = str2fmt(*++args);

}

else if (!strcmp (*args, "-rctform"))

{

if (!args[1])

goto argerr;

rctformat = str2fmt(*++args);

}

else if (!strcmp (*args, "-certfile"))

{

if (!args[1])

goto argerr;

certfile = *++args;

}

else if (!strcmp (*args, "-CAfile"))

{

if (!args[1])

goto argerr;

CAfile = *++args;

}

else if (!strcmp (*args, "-CApath"))

{

if (!args[1])

goto argerr;

CApath = *++args;

}

else if (!strcmp (*args, "-in"))

{

if (!args[1])

goto argerr;

infile = *++args;

}

else if (!strcmp (*args, "-inform"))

{

if (!args[1])

goto argerr;

informat = str2fmt(*++args);

}

else if (!strcmp (*args, "-outform"))

{

if (!args[1])

goto argerr;

outformat = str2fmt(*++args);

}

else if (!strcmp (*args, "-out"))

{

if (!args[1])

goto argerr;

outfile = *++args;

}

else if (!strcmp (*args, "-content"))

{

if (!args[1])

goto argerr;

contfile = *++args;

}

else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))

continue;

else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)

badarg = 1;

args++;

}

if (((rr_allorfirst != -1) || rr_from) && !rr_to)

{

BIO_puts(bio_err, "No Signed Receipts Recipients\n");

goto argerr;

}

if (!(operation & SMIME_SIGNERS) && (rr_to || rr_from))

{

BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");

goto argerr;

}

if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners))

{

BIO_puts(bio_err, "Multiple signers or keys not allowed\n");

goto argerr;

}

if (operation & SMIME_SIGNERS)

{

if (keyfile && !signerfile)

{

BIO_puts(bio_err, "Illegal -inkey without -signer\n");

goto argerr;

}

/* Check to see if any final signer needs to be appended */

if (signerfile)

{

if (!sksigners)

sksigners = sk_OPENSSL_STRING_new_null();

sk_OPENSSL_STRING_push(sksigners, signerfile);

if (!skkeys)

skkeys = sk_OPENSSL_STRING_new_null();

if (!keyfile)

keyfile = signerfile;

sk_OPENSSL_STRING_push(skkeys, keyfile);

}

if (!sksigners)

{

BIO_printf(bio_err, "No signer certificate specified\n");

badarg = 1;

}

signerfile = NULL;

keyfile = NULL;

need_rand = 1;

}

else if (operation == SMIME_DECRYPT)

{

if (!recipfile && !keyfile && !secret_key && !pwri_pass)

{

BIO_printf(bio_err, "No recipient certificate or key specified\n");

badarg = 1;

}

}

else if (operation == SMIME_ENCRYPT)

{

if (!*args && !secret_key && !pwri_pass)

{

BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");

badarg = 1;

}

need_rand = 1;

}

else if (!operation)

badarg = 1;

if (badarg)

{

argerr:

BIO_printf (bio_err, "Usage cms [options] cert.pem ...\n");

BIO_printf (bio_err, "where options are\n");

BIO_printf (bio_err, "-encrypt encrypt message\n");

BIO_printf (bio_err, "-decrypt decrypt encrypted message\n");

BIO_printf (bio_err, "-sign sign message\n");

BIO_printf (bio_err, "-verify verify signed message\n");

BIO_printf (bio_err, "-cmsout output CMS structure\n");

#ifndef OPENSSL_NO_DES

BIO_printf (bio_err, "-des3 encrypt with triple DES\n");

BIO_printf (bio_err, "-des encrypt with DES\n");

#endif

#ifndef OPENSSL_NO_SEED

BIO_printf (bio_err, "-seed encrypt with SEED\n");

#endif

#ifndef OPENSSL_NO_RC2

BIO_printf (bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");

BIO_printf (bio_err, "-rc2-64 encrypt with RC2-64\n");

BIO_printf (bio_err, "-rc2-128 encrypt with RC2-128\n");

#endif

#ifndef OPENSSL_NO_AES

BIO_printf (bio_err, "-aes128, -aes192, -aes256\n");

BIO_printf (bio_err, " encrypt PEM output with cbc aes\n");

#endif

#ifndef OPENSSL_NO_CAMELLIA

BIO_printf (bio_err, "-camellia128, -camellia192, -camellia256\n");

BIO_printf (bio_err, " encrypt PEM output with cbc camellia\n");

#endif

BIO_printf (bio_err, "-nointern don't search certificates in message for signer\n");

BIO_printf (bio_err, "-nosigs don't verify message signature\n");

BIO_printf (bio_err, "-noverify don't verify signers certificate\n");

BIO_printf (bio_err, "-nocerts don't include signers certificate when signing\n");

BIO_printf (bio_err, "-nodetach use opaque signing\n");

BIO_printf (bio_err, "-noattr don't include any signed attributes\n");

BIO_printf (bio_err, "-binary don't translate message to text\n");

BIO_printf (bio_err, "-certfile file other certificates file\n");

BIO_printf (bio_err, "-certsout file certificate output file\n");

BIO_printf (bio_err, "-signer file signer certificate file\n");

BIO_printf (bio_err, "-recip file recipient certificate file for decryption\n");

BIO_printf (bio_err, "-keyid use subject key identifier\n");

BIO_printf (bio_err, "-in file input file\n");

BIO_printf (bio_err, "-inform arg input format SMIME (default), PEM or DER\n");

BIO_printf (bio_err, "-inkey file input private key (if not signer or recipient)\n");

BIO_printf (bio_err, "-keyform arg input private key format (PEM or ENGINE)\n");

BIO_printf (bio_err, "-out file output file\n");

BIO_printf (bio_err, "-outform arg output format SMIME (default), PEM or DER\n");

BIO_printf (bio_err, "-content file supply or override content for detached signature\n");

BIO_printf (bio_err, "-to addr to address\n");

BIO_printf (bio_err, "-from ad from address\n");

BIO_printf (bio_err, "-subject s subject\n");

BIO_printf (bio_err, "-text include or delete text MIME headers\n");

BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");

BIO_printf (bio_err, "-CAfile file trusted certificates file\n");

BIO_printf (bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");

BIO_printf (bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");

#ifndef OPENSSL_NO_ENGINE

BIO_printf (bio_err, "-engine e use engine e, possibly a hardware device.\n");

#endif

BIO_printf (bio_err, "-passin arg input file pass phrase source\n");

BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);

BIO_printf(bio_err, " load the file (or the files in the directory) into\n");

BIO_printf(bio_err, " the random number generator\n");

BIO_printf (bio_err, "cert.pem recipient certificate(s) for encryption\n");

goto end;

}

#ifndef OPENSSL_NO_ENGINE

e = setup_engine(bio_err, engine, 0);

#endif

if (!app_passwd(bio_err, passargin, NULL, &passin, NULL))

{

BIO_printf(bio_err, "Error getting password\n");

goto end;

}

if (need_rand)

{

app_RAND_load_file(NULL, bio_err, (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 &= ~CMS_DETACHED;

if (operation & SMIME_OP)

{

if (outformat == FORMAT_ASN1)

outmode = "wb";

}

else

{

if (flags & CMS_BINARY)

outmode = "wb";

}

if (operation & SMIME_IP)

{

if (informat == FORMAT_ASN1)

inmode = "rb";

}

else

{

if (flags & CMS_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

}

if (secret_key && !secret_keyid)

{

BIO_printf(bio_err, "No secret key id\n");

goto end;

}

if (*args)

encerts = sk_X509_new_null();

while (*args)

{

if (!(cert = load_cert(bio_err,*args,FORMAT_PEM,

NULL, e, "recipient certificate file")))

goto end;

sk_X509_push(encerts, cert);

cert = NULL;

args++;

}

}

if (certfile)

{

if (!(other = load_certs(bio_err,certfile,FORMAT_PEM, NULL,

e, "certificate file")))

{

ERR_print_errors(bio_err);

goto end;

}

}

if (recipfile && (operation == SMIME_DECRYPT))

{

if (!(recip = load_cert(bio_err,recipfile,FORMAT_PEM,NULL,

e, "recipient certificate file")))

{

ERR_print_errors(bio_err);

goto end;

}

}

if (operation == SMIME_SIGN_RECEIPT)

{

if (!(signer = load_cert(bio_err,signerfile,FORMAT_PEM,NULL,

e, "receipt signer certificate file")))

{

ERR_print_errors(bio_err);

goto end;

}

}

if (operation == SMIME_DECRYPT)

{

if (!keyfile)

keyfile = recipfile;

}

else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT))

{

if (!keyfile)

keyfile = signerfile;

}

else keyfile = NULL;

if (keyfile)

{

key = load_key(bio_err, keyfile, keyform, 0, passin, e,

"signing key file");

if (!key)

goto end;

}

if (infile)

{

if (!(in = BIO_new_file(infile, inmode)))

{

BIO_printf (bio_err,

"Can't open input file %s\n", infile);

goto end;

}

}

else

in = BIO_new_fp(stdin, BIO_NOCLOSE);

if (operation & SMIME_IP)

{

if (informat == FORMAT_SMIME)

cms = SMIME_read_CMS(in, &indata);

else if (informat == FORMAT_PEM)

cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);

else if (informat == FORMAT_ASN1)

cms = d2i_CMS_bio(in, NULL);

else

{

BIO_printf(bio_err, "Bad input format for CMS file\n");

goto end;

}

if (!cms)

{

BIO_printf(bio_err, "Error reading S/MIME message\n");

goto end;

}

if (contfile)

{

BIO_free(indata);

if (!(indata = BIO_new_file(contfile, "rb")))

{

BIO_printf(bio_err, "Can't read content file %s\n", contfile);

goto end;

}

}

if (certsoutfile)

{

STACK_OF(X509) *allcerts;

allcerts = CMS_get1_certs(cms);

if (!save_certs(certsoutfile, allcerts))

{

BIO_printf(bio_err,

"Error writing certs to %s\n",

certsoutfile);

ret = 5;

goto end;

}

sk_X509_pop_free(allcerts, X509_free);

}

}

if (rctfile)

{

char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r";

if (!(rctin = BIO_new_file(rctfile, rctmode)))

{

BIO_printf (bio_err,

"Can't open receipt file %s\n", rctfile);

goto end;

}

if (rctformat == FORMAT_SMIME)

rcms = SMIME_read_CMS(rctin, NULL);

else if (rctformat == FORMAT_PEM)

rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);

else if (rctformat == FORMAT_ASN1)

rcms = d2i_CMS_bio(rctin, NULL);

else

{

BIO_printf(bio_err, "Bad input format for receipt\n");

goto end;

}

if (!rcms)

{

BIO_printf(bio_err, "Error reading receipt\n");

goto end;

}

}

if (outfile)

{

if (!(out = BIO_new_file(outfile, outmode)))

{

BIO_printf (bio_err,

"Can't open output file %s\n", outfile);

goto end;

}

}

else

{

out = BIO_new_fp(stdout, BIO_NOCLOSE);

#ifdef OPENSSL_SYS_VMS

{

BIO *tmpbio = BIO_new(BIO_f_linebuffer());

out = BIO_push(tmpbio, out);

}

#endif

}

if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT))

{

if (!(store = setup_verify(bio_err, CAfile, CApath)))

goto end;

X509_STORE_set_verify_cb(store, cms_cb);

if (vpm)

X509_STORE_set1_param(store, vpm);

}

ret = 3;

if (operation == SMIME_DATA_CREATE)

{

cms = CMS_data_create(in, flags);

}

else if (operation == SMIME_DIGEST_CREATE)

{

cms = CMS_digest_create(in, sign_md, flags);

}

else if (operation == SMIME_COMPRESS)

{

cms = CMS_compress(in, -1, flags);

}

else if (operation == SMIME_ENCRYPT)

{

flags |= CMS_PARTIAL;

cms = CMS_encrypt(encerts, in, cipher, flags);

if (!cms)

goto end;

if (secret_key)

{

if (!CMS_add0_recipient_key(cms, NID_undef,

secret_key, secret_keylen,

secret_keyid, secret_keyidlen,

NULL, NULL, NULL))

goto end;

/* NULL these because call absorbs them */

secret_key = NULL;

secret_keyid = NULL;

}

if (pwri_pass)

{

pwri_tmp = (unsigned char *)BUF_strdup((char *)pwri_pass);

if (!pwri_tmp)

goto end;

if (!CMS_add0_recipient_password(cms,

-1, NID_undef, NID_undef,

pwri_tmp, -1, NULL))

goto end;

pwri_tmp = NULL;

}

if (!(flags & CMS_STREAM))

{

if (!CMS_final(cms, in, NULL, flags))

goto end;

}

}

else if (operation == SMIME_ENCRYPTED_ENCRYPT)

{

cms = CMS_EncryptedData_encrypt(in, cipher,

secret_key, secret_keylen,

flags);

}

else if (operation == SMIME_SIGN_RECEIPT)

{

CMS_ContentInfo *srcms = NULL;

STACK_OF(CMS_SignerInfo) *sis;

CMS_SignerInfo *si;

sis = CMS_get0_SignerInfos(cms);

if (!sis)

goto end;

si = sk_CMS_SignerInfo_value(sis, 0);

srcms = CMS_sign_receipt(si, signer, key, other, flags);

if (!srcms)

goto end;

CMS_ContentInfo_free(cms);

cms = srcms;

}

else if (operation & SMIME_SIGNERS)

{

int i;

/* If detached data content we enable streaming if

* S/MIME output format.

*/

if (operation == SMIME_SIGN)

{

if (flags & CMS_DETACHED)

{

if (outformat == FORMAT_SMIME)

flags |= CMS_STREAM;

}

flags |= CMS_PARTIAL;

cms = CMS_sign(NULL, NULL, other, in, flags);

if (!cms)

goto end;

if (econtent_type)

CMS_set1_eContentType(cms, econtent_type);

if (rr_to)

{

rr = make_receipt_request(rr_to, rr_allorfirst,

rr_from);

if (!rr)

{

BIO_puts(bio_err,

"Signed Receipt Request Creation Error\n");

goto end;

}

}

}

else