Symaptic: os/ossrv/ssl/tsrc/topenssl/src/smime.c@260cb5ec6c19

     1 /* smime.c */

     2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

     3  * project.

     4  */

     5 /* ====================================================================

     6  * Copyright (c) 1999-2004 The OpenSSL Project.  All rights reserved.

     7  *

     8  * Redistribution and use in source and binary forms, with or without

     9  * modification, are permitted provided that the following conditions

    10  * are met:

    11  *

    12  * 1. Redistributions of source code must retain the above copyright

    13  *    notice, this list of conditions and the following disclaimer.

    14  *

    15  * 2. Redistributions in binary form must reproduce the above copyright

    16  *    notice, this list of conditions and the following disclaimer in

    17  *    the documentation and/or other materials provided with the

    18  *    distribution.

    19  *

    20  * 3. All advertising materials mentioning features or use of this

    21  *    software must display the following acknowledgment:

    22  *    "This product includes software developed by the OpenSSL Project

    23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

    24  *

    25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

    26  *    endorse or promote products derived from this software without

    27  *    prior written permission. For written permission, please contact

    28  *    licensing@OpenSSL.org.

    29  *

    30  * 5. Products derived from this software may not be called "OpenSSL"

    31  *    nor may "OpenSSL" appear in their names without prior written

    32  *    permission of the OpenSSL Project.

    33  *

    34  * 6. Redistributions of any form whatsoever must retain the following

    35  *    acknowledgment:

    36  *    "This product includes software developed by the OpenSSL Project

    37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

    38  *

    39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

    40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

    43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

    45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

    48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

    50  * OF THE POSSIBILITY OF SUCH DAMAGE.

    51  * ====================================================================

    52  *

    53  * This product includes cryptographic software written by Eric Young

    54  * (eay@cryptsoft.com).  This product includes software written by Tim

    55  * Hudson (tjh@cryptsoft.com).

    56  *

    57  */

    59 /* S/MIME utility function */

    61 #include <stdio.h>

    62 #include <string.h>

    63 #include "apps.h"

    64 #include <openssl/crypto.h>

    65 #include <openssl/pem.h>

    66 #include <openssl/err.h>

    67 #include <openssl/x509_vfy.h>

    68 #include <openssl/x509v3.h>

    70 #undef PROG

    71 #define PROG smime_main

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

    73 static int smime_cb(int ok, X509_STORE_CTX *ctx);

    75 #define SMIME_OP	0x10

    76 #define SMIME_ENCRYPT	(1 | SMIME_OP)

    77 #define SMIME_DECRYPT	2

    78 #define SMIME_SIGN	(3 | SMIME_OP)

    79 #define SMIME_VERIFY	4

    80 #define SMIME_PK7OUT	5

    83 int MAIN(int, char **);

    85 int MAIN(int argc, char **argv)

    86 	{

    87 	ENGINE *e = NULL;

    88 	int operation = 0;

    89 	int ret = 0;

    90 	char **args;

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

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

    93 	char *signerfile = NULL, *recipfile = NULL;

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

    95 	const EVP_CIPHER *cipher = NULL;

    96 	PKCS7 *p7 = NULL;

    97 	X509_STORE *store = NULL;

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

    99 	EVP_PKEY *key = NULL;

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

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

   102 	int badarg = 0;

   103 	int flags = PKCS7_DETACHED;

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

   105 	char *CAfile = NULL, *CApath = NULL;

   106 	char *passargin = NULL, *passin = NULL;

   107 	char *inrand = NULL;

   108 	int need_rand = 0;

   109 	int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;

   110         int keyform = FORMAT_PEM;

   111 #ifndef OPENSSL_NO_ENGINE

   112 	char *engine=NULL;

   113 #endif

   115 	X509_VERIFY_PARAM *vpm = NULL;

   117 	args = argv + 1;

   118 	ret = 1;

   120 	apps_startup();

   122 	if (bio_err == NULL)

   123 		{

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

   125 			BIO_set_fp(bio_err, stderr, BIO_NOCLOSE|BIO_FP_TEXT);

   127 		}

   129 	if (!load_config(bio_err, NULL))

   130 		goto end;

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

   133 		{

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

   135 			operation = SMIME_ENCRYPT;

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

   137 			operation = SMIME_DECRYPT;

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

   139 			operation = SMIME_SIGN;

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

   141 			operation = SMIME_VERIFY;

   142 		else if (!strcmp (*args, "-pk7out"))

   143 			operation = SMIME_PK7OUT;

   144 #ifndef OPENSSL_NO_DES

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

   146 				cipher = EVP_des_ede3_cbc();

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

   148 				cipher = EVP_des_cbc();

   149 #endif

   150 #ifndef OPENSSL_NO_RC2

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

   152 				cipher = EVP_rc2_40_cbc();

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

   154 				cipher = EVP_rc2_cbc();

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

   156 				cipher = EVP_rc2_64_cbc();

   157 #endif

   158 #ifndef OPENSSL_NO_AES

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

   160 				cipher = EVP_aes_128_cbc();

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

   162 				cipher = EVP_aes_192_cbc();

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

   164 				cipher = EVP_aes_256_cbc();

   165 #endif

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

   167 				flags |= PKCS7_TEXT;

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

   169 				flags |= PKCS7_NOINTERN;

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

   171 				flags |= PKCS7_NOVERIFY;

   172 		else if (!strcmp (*args, "-nochain"))

   173 				flags |= PKCS7_NOCHAIN;

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

   175 				flags |= PKCS7_NOCERTS;

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

   177 				flags |= PKCS7_NOATTR;

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

   179 				flags &= ~PKCS7_DETACHED;

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

   181 				flags |= PKCS7_NOSMIMECAP;

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

   183 				flags |= PKCS7_BINARY;

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

   185 				flags |= PKCS7_NOSIGS;

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

   187 				flags |= PKCS7_NOOLDMIMETYPE;

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

   189 				flags |= PKCS7_CRLFEOL;

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

   191 			{

   192 			if (args[1])

   193 				{

   194 				args++;

   195 				inrand = *args;

   196 				}

   197 			else

   198 				badarg = 1;

   199 			need_rand = 1;

   200 			}

   201 #ifndef OPENSSL_NO_ENGINE

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

   203 			{

   204 			if (args[1])

   205 				{

   206 				args++;

   207 				engine = *args;

   208 				}

   209 			else badarg = 1;

   210 			}

   211 #endif

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

   213 			{

   214 			if (args[1])

   215 				{

   216 				args++;

   217 				passargin = *args;

   218 				}

   219 			else

   220 				badarg = 1;

   221 			}

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

   223 			{

   224 			if (args[1])

   225 				{

   226 				args++;

   227 				to = *args;

   228 				}

   229 			else

   230 				badarg = 1;

   231 			}

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

   233 			{

   234 			if (args[1])

   235 				{

   236 				args++;

   237 				from = *args;

   238 				}

   239 			else badarg = 1;

   240 			}

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

   242 			{

   243 			if (args[1])

   244 				{

   245 				args++;

   246 				subject = *args;

   247 				}

   248 			else

   249 				badarg = 1;

   250 			}

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

   252 			{

   253 			if (args[1])

   254 				{

   255 				args++;

   256 				signerfile = *args;

   257 				}

   258 			else

   259 				badarg = 1;

   260 			}

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

   262 			{

   263 			if (args[1])

   264 				{

   265 				args++;

   266 				recipfile = *args;

   267 				}

   268 			else badarg = 1;

   269 			}

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

   271 			{

   272 			if (args[1])

   273 				{

   274 				args++;

   275 				keyfile = *args;

   276 				}

   277 			else

   278 				badarg = 1;

   279 		}

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

   281 			{

   282 			if (args[1])

   283 				{

   284 				args++;

   285 				keyform = str2fmt(*args);

   286 				}

   287 			else

   288 				badarg = 1;

   289 			}

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

   291 			{

   292 			if (args[1])

   293 				{

   294 				args++;

   295 				certfile = *args;

   296 				}

   297 			else

   298 				badarg = 1;

   299 			}

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

   301 			{

   302 			if (args[1])

   303 				{

   304 				args++;

   305 				CAfile = *args;

   306 				}

   307 			else

   308 				badarg = 1;

   309 			}

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

   311 			{

   312 			if (args[1])

   313 				{

   314 				args++;

   315 				CApath = *args;

   316 				}

   317 			else

   318 				badarg = 1;

   319 			}

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

   321 			{

   322 			if (args[1])

   323 				{

   324 				args++;

   325 				infile = *args;

   326 				}

   327 			else

   328 				badarg = 1;

   329 			}

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

   331 			{

   332 			if (args[1])

   333 				{

   334 				args++;

   335 				informat = str2fmt(*args);

   336 				}

   337 			else

   338 				badarg = 1;

   339 			}

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

   341 			{

   342 			if (args[1])

   343 				{

   344 				args++;

   345 				outformat = str2fmt(*args);

   346 				}

   347 			else

   348 				badarg = 1;

   349 			}

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

   351 			{

   352 			if (args[1])

   353 				{

   354 				args++;

   355 				outfile = *args;

   356 				}

   357 			else

   358 				badarg = 1;

   359 			}

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

   361 			{

   362 			if (args[1])

   363 				{

   364 				args++;

   365 				contfile = *args;

   366 				}

   367 			else

   368 				badarg = 1;

   369 			}

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

   371 			continue;

   372 		else

   373 			badarg = 1;

   374 		args++;

   375 		}

   378 	if (operation == SMIME_SIGN)

   379 		{

   380 		if (!signerfile)

   381 			{

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

   383 			badarg = 1;

   384 			}

   385 		need_rand = 1;

   386 		}

   387 	else if (operation == SMIME_DECRYPT)

   388 		{

   389 		if (!recipfile && !keyfile)

   390 			{

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

   392 			badarg = 1;

   393 			}

   394 		}

   395 	else if (operation == SMIME_ENCRYPT)

   396 		{

   397 		if (!*args)

   398 			{

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

   400 			badarg = 1;

   401 			}

   402 		need_rand = 1;

   403 		}

   404 	else if (!operation)

   405 		badarg = 1;

   407 	if (badarg)

   408 		{

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

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

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

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

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

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

   415 		BIO_printf (bio_err, "-pk7out        output PKCS#7 structure\n");

   416 #ifndef OPENSSL_NO_DES

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

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

   419 #endif

   420 #ifndef OPENSSL_NO_RC2

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

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

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

   424 #endif

   425 #ifndef OPENSSL_NO_AES

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

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

   428 #endif

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

   454 #ifndef OPENSSL_NO_ENGINE

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

   456 #endif

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

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

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

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

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

   462 		goto end;

   463 		}

   465 #ifndef OPENSSL_NO_ENGINE

   466         e = setup_engine(bio_err, engine, 0);

   467 #endif

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

   470 		{

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

   472 		goto end;

   473 		}

   475 	if (need_rand)

   476 		{

   477 		app_RAND_load_file(NULL, bio_err, (inrand != NULL));

   478 		if (inrand != NULL)

   479 			BIO_printf(bio_err,"%ld semi-random bytes loaded\n",

   480 				app_RAND_load_files(inrand));

   481 		}

   483 	ret = 2;

   485 	if (operation != SMIME_SIGN)

   486 		flags &= ~PKCS7_DETACHED;

   488 	if (operation & SMIME_OP)

   489 		{

   490 		if (flags & PKCS7_BINARY)

   491 			inmode = "rb";

   492 		if (outformat == FORMAT_ASN1)

   493 			outmode = "wb";

   494 		}

   495 	else

   496 		{

   497 		if (flags & PKCS7_BINARY)

   498 			outmode = "wb";

   499 		if (informat == FORMAT_ASN1)

   500 			inmode = "rb";

   501 		}

   503 	if (operation == SMIME_ENCRYPT)

   504 		{

   505 		if (!cipher)

   506 			{

   507 #ifndef OPENSSL_NO_RC2

   508 			cipher = EVP_rc2_40_cbc();

   509 #else

   510 			BIO_printf(bio_err, "No cipher selected\n");

   511 			goto end;

   512 #endif

   513 			}

   514 		encerts = sk_X509_new_null();

   515 		while (*args)

   516 			{

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

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

   519 				{

   520 #if 0				/* An appropriate message is already printed */

   521 				BIO_printf(bio_err, "Can't read recipient certificate file %s\n", *args);

   522 #endif

   523 				goto end;

   524 				}

   525 			sk_X509_push(encerts, cert);

   526 			cert = NULL;

   527 			args++;

   528 			}

   529 		}

   531 	if (signerfile && (operation == SMIME_SIGN))

   532 		{

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

   534 			e, "signer certificate")))

   535 			{

   536 #if 0			/* An appropri message has already been printed */

   537 			BIO_printf(bio_err, "Can't read signer certificate file %s\n", signerfile);

   538 #endif

   539 			goto end;

   540 			}

   541 		}

   543 	if (certfile)

   544 		{

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

   546 			e, "certificate file")))

   547 			{

   548 #if 0			/* An appropriate message has already been printed */

   549 			BIO_printf(bio_err, "Can't read certificate file %s\n", certfile);

   550 #endif

   551 			ERR_print_errors(bio_err);

   552 			goto end;

   553 			}

   554 		}

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

   557 		{

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

   559 			e, "recipient certificate file")))

   560 			{

   561 #if 0			/* An appropriate message has alrady been printed */

   562 			BIO_printf(bio_err, "Can't read recipient certificate file %s\n", recipfile);

   563 #endif

   564 			ERR_print_errors(bio_err);

   565 			goto end;

   566 			}

   567 		}

   569 	if (operation == SMIME_DECRYPT)

   570 		{

   571 		if (!keyfile)

   572 			keyfile = recipfile;

   573 		}

   574 	else if (operation == SMIME_SIGN)

   575 		{

   576 		if (!keyfile)

   577 			keyfile = signerfile;

   578 		}

   579 	else keyfile = NULL;

   581 	if (keyfile)

   582 		{

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

   584 			       "signing key file");

   585 		if (!key)

   586 			goto end;

   587 		}

   589 	if (infile)

   590 		{

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

   592 			{

   593 			BIO_printf (bio_err,

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

   595 			goto end;

   596 			}

   597 		}

   598 	else

   599 		in = BIO_new_fp(stdin, BIO_NOCLOSE);

   602 	if (outfile)

   603 		{

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

   605 			{

   606 			BIO_printf (bio_err,

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

   608 			goto end;

   609 			}

   610 		}

   611 	else

   612 		{

   613 		out = BIO_new_fp(stdout, BIO_NOCLOSE);

   615 #ifdef OPENSSL_SYS_VMS

   616 		{

   617 		    BIO *tmpbio = BIO_new(BIO_f_linebuffer());

   618 		    out = BIO_push(tmpbio, out);

   619 		}

   620 #endif

   621 		}

   623 	if (operation == SMIME_VERIFY)

   624 		{

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

   626 			goto end;

   627 		X509_STORE_set_verify_cb_func(store, smime_cb);

   628 		if (vpm)

   629 			X509_STORE_set1_param(store, vpm);

   630 		}

   633 	ret = 3;

   635 	if (operation == SMIME_ENCRYPT)

   636 		p7 = PKCS7_encrypt(encerts, in, cipher, flags);

   637 	else if (operation == SMIME_SIGN)

   638 		{

   639 		/* If detached data and SMIME output enable partial

   640 		 * signing.

   641 		 */

   642 		if ((flags & PKCS7_DETACHED) && (outformat == FORMAT_SMIME))

   643 			flags |= PKCS7_STREAM;

   644 		p7 = PKCS7_sign(signer, key, other, in, flags);

   645 		}

   646 	else

   647 		{

   648 		if (informat == FORMAT_SMIME)

   649 			p7 = SMIME_read_PKCS7(in, &indata);

   650 		else if (informat == FORMAT_PEM)

   651 			p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);

   652 		else if (informat == FORMAT_ASN1)

   653 			p7 = d2i_PKCS7_bio(in, NULL);

   654 		else

   655 			{

   656 			BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");

   657 			goto end;

   658 			}

   660 		if (!p7)

   661 			{

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

   663 			goto end;

   664 			}

   665 		if (contfile)

   666 			{

   667 			BIO_free(indata);

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

   669 				{

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

   671 				goto end;

   672 				}

   673 			}

   674 		}

   676 	if (!p7)

   677 		{

   678 		BIO_printf(bio_err, "Error creating PKCS#7 structure\n");

   679 		goto end;

   680 		}

   682 	ret = 4;

   683 	if (operation == SMIME_DECRYPT)

   684 		{

   685 		if (!PKCS7_decrypt(p7, key, recip, out, flags))

   686 			{

   687 			BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");

   688 			goto end;

   689 			}

   690 		}

   691 	else if (operation == SMIME_VERIFY)

   692 		{

   693 		STACK_OF(X509) *signers;

   694 		if (PKCS7_verify(p7, other, store, indata, out, flags))

   695 			BIO_printf(bio_err, "Verification successful\n");

   696 		else

   697 			{

   698 			BIO_printf(bio_err, "Verification failure\n");

   699 			goto end;

   700 			}

   701 		signers = PKCS7_get0_signers(p7, other, flags);

   702 		if (!save_certs(signerfile, signers))

   703 			{

   704 			BIO_printf(bio_err, "Error writing signers to %s\n",

   705 								signerfile);

   706 			ret = 5;

   707 			goto end;

   708 			}

   709 		sk_X509_free(signers);

   710 		}

   711 	else if (operation == SMIME_PK7OUT)

   712 		PEM_write_bio_PKCS7(out, p7);

   713 	else

   714 		{

   715 		if (to)

   716 			BIO_printf(out, "To: %s\n", to);

   717 		if (from)

   718 			BIO_printf(out, "From: %s\n", from);

   719 		if (subject)

   720 			BIO_printf(out, "Subject: %s\n", subject);

   721 		if (outformat == FORMAT_SMIME)

   722 			SMIME_write_PKCS7(out, p7, in, flags);

   723 		else if (outformat == FORMAT_PEM)

   724 			PEM_write_bio_PKCS7(out,p7);

   725 		else if (outformat == FORMAT_ASN1)

   726 			i2d_PKCS7_bio(out,p7);

   727 		else

   728 			{

   729 			BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");

   730 			goto end;

   731 			}

   732 		}

   733 	ret = 0;

   734 end:

   735 	if (need_rand)

   736 		app_RAND_write_file(NULL, bio_err);

   737 	if (ret) ERR_print_errors(bio_err);

   738 	sk_X509_pop_free(encerts, X509_free);

   739 	sk_X509_pop_free(other, X509_free);

   740 	if (vpm)

   741 		X509_VERIFY_PARAM_free(vpm);

   742 	X509_STORE_free(store);

   743 	X509_free(cert);

   744 	X509_free(recip);

   745 	X509_free(signer);

   746 	EVP_PKEY_free(key);

   747 	PKCS7_free(p7);

   748 	BIO_free(in);

   749 	BIO_free(indata);

   750 	BIO_free_all(out);

   751 	if (passin) OPENSSL_free(passin);

   752 	return (ret);

   753 }

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

   756 	{

   757 	int i;

   758 	BIO *tmp;

   759 	if (!signerfile)

   760 		return 1;

   761 	tmp = BIO_new_file(signerfile, "w");

   762 	if (!tmp) return 0;

   763 	for(i = 0; i < sk_X509_num(signers); i++)

   764 		PEM_write_bio_X509(tmp, sk_X509_value(signers, i));

   765 	BIO_free(tmp);

   766 	return 1;

   767 	}

   770 /* Minimal callback just to output policy info (if any) */

   772 static int smime_cb(int ok, X509_STORE_CTX *ctx)

   773 	{

   774 	int error;

   776 	error = X509_STORE_CTX_get_error(ctx);

   778 	if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)

   779 		&& ((error != X509_V_OK) || (ok != 2)))

   780 		return ok;

   782 	policies_print(NULL, ctx);

   784 	return ok;

   786 	}

author	sl
	Tue, 10 Jun 2014 14:32:02 +0200
changeset 1	260cb5ec6c19
permissions	-rw-r--r--