| /* smime.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> |
| |
| #undef PROG |
| #define PROG smime_main |
| 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) |
| |
| 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; |
| char *signerfile = NULL, *recipfile = NULL; |
| STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL; |
| char *certfile = NULL, *keyfile = NULL, *contfile = NULL; |
| const EVP_CIPHER *cipher = NULL; |
| PKCS7 *p7 = 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; |
| int badarg = 0; |
| int flags = PKCS7_DETACHED; |
| char *to = NULL, *from = NULL, *subject = NULL; |
| char *CAfile = NULL, *CApath = NULL; |
| char *passargin = NULL, *passin = NULL; |
| char *inrand = NULL; |
| int need_rand = 0; |
| int indef = 0; |
| const EVP_MD *sign_md = NULL; |
| int informat = FORMAT_SMIME, outformat = FORMAT_SMIME; |
| int keyform = FORMAT_PEM; |
| #ifndef OPENSSL_NO_ENGINE |
| char *engine = NULL; |
| #endif |
| |
| 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, "-resign")) |
| operation = SMIME_RESIGN; |
| else if (!strcmp(*args, "-verify")) |
| operation = SMIME_VERIFY; |
| else if (!strcmp(*args, "-pk7out")) |
| operation = SMIME_PK7OUT; |
| #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 |= PKCS7_TEXT; |
| else if (!strcmp(*args, "-nointern")) |
| flags |= PKCS7_NOINTERN; |
| else if (!strcmp(*args, "-noverify")) |
| flags |= PKCS7_NOVERIFY; |
| else if (!strcmp(*args, "-nochain")) |
| flags |= PKCS7_NOCHAIN; |
| else if (!strcmp(*args, "-nocerts")) |
| flags |= PKCS7_NOCERTS; |
| else if (!strcmp(*args, "-noattr")) |
| flags |= PKCS7_NOATTR; |
| else if (!strcmp(*args, "-nodetach")) |
| flags &= ~PKCS7_DETACHED; |
| else if (!strcmp(*args, "-nosmimecap")) |
| flags |= PKCS7_NOSMIMECAP; |
| else if (!strcmp(*args, "-binary")) |
| flags |= PKCS7_BINARY; |
| else if (!strcmp(*args, "-nosigs")) |
| flags |= PKCS7_NOSIGS; |
| else if (!strcmp(*args, "-stream")) |
| indef = 1; |
| else if (!strcmp(*args, "-indef")) |
| indef = 1; |
| else if (!strcmp(*args, "-noindef")) |
| indef = 0; |
| else if (!strcmp(*args, "-nooldmime")) |
| flags |= PKCS7_NOOLDMIMETYPE; |
| else if (!strcmp(*args, "-crlfeol")) |
| flags |= PKCS7_CRLFEOL; |
| 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, "-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, "-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 (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) { |
| BIO_puts(bio_err, "Multiple signers or keys not allowed\n"); |
| goto argerr; |
| } |
| |
| 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 argerr; |
| } |
| 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) { |
| BIO_printf(bio_err, |
| "No recipient certificate or key specified\n"); |
| badarg = 1; |
| } |
| } else if (operation == SMIME_ENCRYPT) { |
| if (!*args) { |
| 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 smime [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, "-pk7out output PKCS#7 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, "-signer file signer certificate file\n"); |
| BIO_printf(bio_err, |
| "-recip file recipient certificate file for decryption\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, |
| "-no_alt_chains only ever use the first certificate chain found\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 &= ~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(); |
| while (*args) { |
| if (!(cert = load_cert(bio_err, *args, FORMAT_PEM, |
| NULL, e, "recipient certificate file"))) { |
| #if 0 /* An appropriate message is already printed */ |
| BIO_printf(bio_err, |
| "Can't read recipient certificate file %s\n", |
| *args); |
| #endif |
| 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_DECRYPT) { |
| if (!keyfile) |
| keyfile = recipfile; |
| } else if (operation == SMIME_SIGN) { |
| 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) |
| 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"))) { |
| BIO_printf(bio_err, "Can't read content file %s\n", contfile); |
| 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) { |
| if (!(store = setup_verify(bio_err, CAfile, CApath))) |
| goto end; |
| X509_STORE_set_verify_cb(store, smime_cb); |
| if (vpm) |
| 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; |
| } 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(bio_err, signerfile, FORMAT_PEM, NULL, |
| e, "signer certificate"); |
| if (!signer) |
| goto end; |
| key = load_key(bio_err, 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) |
| SMIME_write_PKCS7(out, p7, indata, flags); |
| else |
| SMIME_write_PKCS7(out, p7, in, flags); |
| } else if (outformat == FORMAT_PEM) |
| PEM_write_bio_PKCS7_stream(out, p7, in, flags); |
| else if (outformat == FORMAT_ASN1) |
| i2d_PKCS7_bio_stream(out, p7, in, flags); |
| else { |
| BIO_printf(bio_err, "Bad output format for PKCS#7 file\n"); |
| goto end; |
| } |
| } |
| ret = 0; |
| end: |
| if (need_rand) |
| app_RAND_write_file(NULL, bio_err); |
| if (ret) |
| ERR_print_errors(bio_err); |
| sk_X509_pop_free(encerts, X509_free); |
| sk_X509_pop_free(other, X509_free); |
| if (vpm) |
| X509_VERIFY_PARAM_free(vpm); |
| if (sksigners) |
| sk_OPENSSL_STRING_free(sksigners); |
| if (skkeys) |
| 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); |
| if (passin) |
| 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(NULL, ctx); |
| |
| return ok; |
| |
| } |
