cms.c revision 280304
1/* apps/cms.c */
2/*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6/* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project.  All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in
18 *    the documentation and/or other materials provided with the
19 *    distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 *    software must display the following acknowledgment:
23 *    "This product includes software developed by the OpenSSL Project
24 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 *    endorse or promote products derived from this software without
28 *    prior written permission. For written permission, please contact
29 *    licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 *    nor may "OpenSSL" appear in their names without prior written
33 *    permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 *    acknowledgment:
37 *    "This product includes software developed by the OpenSSL Project
38 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 */
54
55/* CMS utility function */
56
57#include <stdio.h>
58#include <string.h>
59#include "apps.h"
60
61#ifndef OPENSSL_NO_CMS
62
63# include <openssl/crypto.h>
64# include <openssl/pem.h>
65# include <openssl/err.h>
66# include <openssl/x509_vfy.h>
67# include <openssl/x509v3.h>
68# include <openssl/cms.h>
69
70# undef PROG
71# define PROG cms_main
72static int save_certs(char *signerfile, STACK_OF(X509) *signers);
73static int cms_cb(int ok, X509_STORE_CTX *ctx);
74static void receipt_request_print(BIO *out, CMS_ContentInfo *cms);
75static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING)
76                                                *rr_to, int rr_allorfirst, STACK_OF(OPENSSL_STRING)
77                                                *rr_from);
78
79# define SMIME_OP        0x10
80# define SMIME_IP        0x20
81# define SMIME_SIGNERS   0x40
82# define SMIME_ENCRYPT           (1 | SMIME_OP)
83# define SMIME_DECRYPT           (2 | SMIME_IP)
84# define SMIME_SIGN              (3 | SMIME_OP | SMIME_SIGNERS)
85# define SMIME_VERIFY            (4 | SMIME_IP)
86# define SMIME_CMSOUT            (5 | SMIME_IP | SMIME_OP)
87# define SMIME_RESIGN            (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
88# define SMIME_DATAOUT           (7 | SMIME_IP)
89# define SMIME_DATA_CREATE       (8 | SMIME_OP)
90# define SMIME_DIGEST_VERIFY     (9 | SMIME_IP)
91# define SMIME_DIGEST_CREATE     (10 | SMIME_OP)
92# define SMIME_UNCOMPRESS        (11 | SMIME_IP)
93# define SMIME_COMPRESS          (12 | SMIME_OP)
94# define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
95# define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)
96# define SMIME_SIGN_RECEIPT      (15 | SMIME_IP | SMIME_OP)
97# define SMIME_VERIFY_RECEIPT    (16 | SMIME_IP)
98
99int verify_err = 0;
100
101int MAIN(int, char **);
102
103int MAIN(int argc, char **argv)
104{
105    ENGINE *e = NULL;
106    int operation = 0;
107    int ret = 0;
108    char **args;
109    const char *inmode = "r", *outmode = "w";
110    char *infile = NULL, *outfile = NULL, *rctfile = NULL;
111    char *signerfile = NULL, *recipfile = NULL;
112    STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
113    char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
114    char *certsoutfile = NULL;
115    const EVP_CIPHER *cipher = NULL;
116    CMS_ContentInfo *cms = NULL, *rcms = NULL;
117    X509_STORE *store = NULL;
118    X509 *cert = NULL, *recip = NULL, *signer = NULL;
119    EVP_PKEY *key = NULL;
120    STACK_OF(X509) *encerts = NULL, *other = NULL;
121    BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;
122    int badarg = 0;
123    int flags = CMS_DETACHED, noout = 0, print = 0;
124    int verify_retcode = 0;
125    int rr_print = 0, rr_allorfirst = -1;
126    STACK_OF(OPENSSL_STRING) *rr_to = NULL, *rr_from = NULL;
127    CMS_ReceiptRequest *rr = NULL;
128    char *to = NULL, *from = NULL, *subject = NULL;
129    char *CAfile = NULL, *CApath = NULL;
130    char *passargin = NULL, *passin = NULL;
131    char *inrand = NULL;
132    int need_rand = 0;
133    const EVP_MD *sign_md = NULL;
134    int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
135    int rctformat = FORMAT_SMIME, keyform = FORMAT_PEM;
136# ifndef OPENSSL_NO_ENGINE
137    char *engine = NULL;
138# endif
139    unsigned char *secret_key = NULL, *secret_keyid = NULL;
140    unsigned char *pwri_pass = NULL, *pwri_tmp = NULL;
141    size_t secret_keylen = 0, secret_keyidlen = 0;
142
143    ASN1_OBJECT *econtent_type = NULL;
144
145    X509_VERIFY_PARAM *vpm = NULL;
146
147    args = argv + 1;
148    ret = 1;
149
150    apps_startup();
151
152    if (bio_err == NULL) {
153        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
154            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
155    }
156
157    if (!load_config(bio_err, NULL))
158        goto end;
159
160    while (!badarg && *args && *args[0] == '-') {
161        if (!strcmp(*args, "-encrypt"))
162            operation = SMIME_ENCRYPT;
163        else if (!strcmp(*args, "-decrypt"))
164            operation = SMIME_DECRYPT;
165        else if (!strcmp(*args, "-sign"))
166            operation = SMIME_SIGN;
167        else if (!strcmp(*args, "-sign_receipt"))
168            operation = SMIME_SIGN_RECEIPT;
169        else if (!strcmp(*args, "-resign"))
170            operation = SMIME_RESIGN;
171        else if (!strcmp(*args, "-verify"))
172            operation = SMIME_VERIFY;
173        else if (!strcmp(*args, "-verify_retcode"))
174            verify_retcode = 1;
175        else if (!strcmp(*args, "-verify_receipt")) {
176            operation = SMIME_VERIFY_RECEIPT;
177            if (!args[1])
178                goto argerr;
179            args++;
180            rctfile = *args;
181        } else if (!strcmp(*args, "-cmsout"))
182            operation = SMIME_CMSOUT;
183        else if (!strcmp(*args, "-data_out"))
184            operation = SMIME_DATAOUT;
185        else if (!strcmp(*args, "-data_create"))
186            operation = SMIME_DATA_CREATE;
187        else if (!strcmp(*args, "-digest_verify"))
188            operation = SMIME_DIGEST_VERIFY;
189        else if (!strcmp(*args, "-digest_create"))
190            operation = SMIME_DIGEST_CREATE;
191        else if (!strcmp(*args, "-compress"))
192            operation = SMIME_COMPRESS;
193        else if (!strcmp(*args, "-uncompress"))
194            operation = SMIME_UNCOMPRESS;
195        else if (!strcmp(*args, "-EncryptedData_decrypt"))
196            operation = SMIME_ENCRYPTED_DECRYPT;
197        else if (!strcmp(*args, "-EncryptedData_encrypt"))
198            operation = SMIME_ENCRYPTED_ENCRYPT;
199# ifndef OPENSSL_NO_DES
200        else if (!strcmp(*args, "-des3"))
201            cipher = EVP_des_ede3_cbc();
202        else if (!strcmp(*args, "-des"))
203            cipher = EVP_des_cbc();
204# endif
205# ifndef OPENSSL_NO_SEED
206        else if (!strcmp(*args, "-seed"))
207            cipher = EVP_seed_cbc();
208# endif
209# ifndef OPENSSL_NO_RC2
210        else if (!strcmp(*args, "-rc2-40"))
211            cipher = EVP_rc2_40_cbc();
212        else if (!strcmp(*args, "-rc2-128"))
213            cipher = EVP_rc2_cbc();
214        else if (!strcmp(*args, "-rc2-64"))
215            cipher = EVP_rc2_64_cbc();
216# endif
217# ifndef OPENSSL_NO_AES
218        else if (!strcmp(*args, "-aes128"))
219            cipher = EVP_aes_128_cbc();
220        else if (!strcmp(*args, "-aes192"))
221            cipher = EVP_aes_192_cbc();
222        else if (!strcmp(*args, "-aes256"))
223            cipher = EVP_aes_256_cbc();
224# endif
225# ifndef OPENSSL_NO_CAMELLIA
226        else if (!strcmp(*args, "-camellia128"))
227            cipher = EVP_camellia_128_cbc();
228        else if (!strcmp(*args, "-camellia192"))
229            cipher = EVP_camellia_192_cbc();
230        else if (!strcmp(*args, "-camellia256"))
231            cipher = EVP_camellia_256_cbc();
232# endif
233        else if (!strcmp(*args, "-debug_decrypt"))
234            flags |= CMS_DEBUG_DECRYPT;
235        else if (!strcmp(*args, "-text"))
236            flags |= CMS_TEXT;
237        else if (!strcmp(*args, "-nointern"))
238            flags |= CMS_NOINTERN;
239        else if (!strcmp(*args, "-noverify")
240                 || !strcmp(*args, "-no_signer_cert_verify"))
241            flags |= CMS_NO_SIGNER_CERT_VERIFY;
242        else if (!strcmp(*args, "-nocerts"))
243            flags |= CMS_NOCERTS;
244        else if (!strcmp(*args, "-noattr"))
245            flags |= CMS_NOATTR;
246        else if (!strcmp(*args, "-nodetach"))
247            flags &= ~CMS_DETACHED;
248        else if (!strcmp(*args, "-nosmimecap"))
249            flags |= CMS_NOSMIMECAP;
250        else if (!strcmp(*args, "-binary"))
251            flags |= CMS_BINARY;
252        else if (!strcmp(*args, "-keyid"))
253            flags |= CMS_USE_KEYID;
254        else if (!strcmp(*args, "-nosigs"))
255            flags |= CMS_NOSIGS;
256        else if (!strcmp(*args, "-no_content_verify"))
257            flags |= CMS_NO_CONTENT_VERIFY;
258        else if (!strcmp(*args, "-no_attr_verify"))
259            flags |= CMS_NO_ATTR_VERIFY;
260        else if (!strcmp(*args, "-stream"))
261            flags |= CMS_STREAM;
262        else if (!strcmp(*args, "-indef"))
263            flags |= CMS_STREAM;
264        else if (!strcmp(*args, "-noindef"))
265            flags &= ~CMS_STREAM;
266        else if (!strcmp(*args, "-nooldmime"))
267            flags |= CMS_NOOLDMIMETYPE;
268        else if (!strcmp(*args, "-crlfeol"))
269            flags |= CMS_CRLFEOL;
270        else if (!strcmp(*args, "-noout"))
271            noout = 1;
272        else if (!strcmp(*args, "-receipt_request_print"))
273            rr_print = 1;
274        else if (!strcmp(*args, "-receipt_request_all"))
275            rr_allorfirst = 0;
276        else if (!strcmp(*args, "-receipt_request_first"))
277            rr_allorfirst = 1;
278        else if (!strcmp(*args, "-receipt_request_from")) {
279            if (!args[1])
280                goto argerr;
281            args++;
282            if (!rr_from)
283                rr_from = sk_OPENSSL_STRING_new_null();
284            sk_OPENSSL_STRING_push(rr_from, *args);
285        } else if (!strcmp(*args, "-receipt_request_to")) {
286            if (!args[1])
287                goto argerr;
288            args++;
289            if (!rr_to)
290                rr_to = sk_OPENSSL_STRING_new_null();
291            sk_OPENSSL_STRING_push(rr_to, *args);
292        } else if (!strcmp(*args, "-print")) {
293            noout = 1;
294            print = 1;
295        } else if (!strcmp(*args, "-secretkey")) {
296            long ltmp;
297            if (!args[1])
298                goto argerr;
299            args++;
300            secret_key = string_to_hex(*args, &ltmp);
301            if (!secret_key) {
302                BIO_printf(bio_err, "Invalid key %s\n", *args);
303                goto argerr;
304            }
305            secret_keylen = (size_t)ltmp;
306        } else if (!strcmp(*args, "-secretkeyid")) {
307            long ltmp;
308            if (!args[1])
309                goto argerr;
310            args++;
311            secret_keyid = string_to_hex(*args, &ltmp);
312            if (!secret_keyid) {
313                BIO_printf(bio_err, "Invalid id %s\n", *args);
314                goto argerr;
315            }
316            secret_keyidlen = (size_t)ltmp;
317        } else if (!strcmp(*args, "-pwri_password")) {
318            if (!args[1])
319                goto argerr;
320            args++;
321            pwri_pass = (unsigned char *)*args;
322        } else if (!strcmp(*args, "-econtent_type")) {
323            if (!args[1])
324                goto argerr;
325            args++;
326            econtent_type = OBJ_txt2obj(*args, 0);
327            if (!econtent_type) {
328                BIO_printf(bio_err, "Invalid OID %s\n", *args);
329                goto argerr;
330            }
331        } else if (!strcmp(*args, "-rand")) {
332            if (!args[1])
333                goto argerr;
334            args++;
335            inrand = *args;
336            need_rand = 1;
337        }
338# ifndef OPENSSL_NO_ENGINE
339        else if (!strcmp(*args, "-engine")) {
340            if (!args[1])
341                goto argerr;
342            engine = *++args;
343        }
344# endif
345        else if (!strcmp(*args, "-passin")) {
346            if (!args[1])
347                goto argerr;
348            passargin = *++args;
349        } else if (!strcmp(*args, "-to")) {
350            if (!args[1])
351                goto argerr;
352            to = *++args;
353        } else if (!strcmp(*args, "-from")) {
354            if (!args[1])
355                goto argerr;
356            from = *++args;
357        } else if (!strcmp(*args, "-subject")) {
358            if (!args[1])
359                goto argerr;
360            subject = *++args;
361        } else if (!strcmp(*args, "-signer")) {
362            if (!args[1])
363                goto argerr;
364            /* If previous -signer argument add signer to list */
365
366            if (signerfile) {
367                if (!sksigners)
368                    sksigners = sk_OPENSSL_STRING_new_null();
369                sk_OPENSSL_STRING_push(sksigners, signerfile);
370                if (!keyfile)
371                    keyfile = signerfile;
372                if (!skkeys)
373                    skkeys = sk_OPENSSL_STRING_new_null();
374                sk_OPENSSL_STRING_push(skkeys, keyfile);
375                keyfile = NULL;
376            }
377            signerfile = *++args;
378        } else if (!strcmp(*args, "-recip")) {
379            if (!args[1])
380                goto argerr;
381            recipfile = *++args;
382        } else if (!strcmp(*args, "-certsout")) {
383            if (!args[1])
384                goto argerr;
385            certsoutfile = *++args;
386        } else if (!strcmp(*args, "-md")) {
387            if (!args[1])
388                goto argerr;
389            sign_md = EVP_get_digestbyname(*++args);
390            if (sign_md == NULL) {
391                BIO_printf(bio_err, "Unknown digest %s\n", *args);
392                goto argerr;
393            }
394        } else if (!strcmp(*args, "-inkey")) {
395            if (!args[1])
396                goto argerr;
397            /* If previous -inkey arument add signer to list */
398            if (keyfile) {
399                if (!signerfile) {
400                    BIO_puts(bio_err, "Illegal -inkey without -signer\n");
401                    goto argerr;
402                }
403                if (!sksigners)
404                    sksigners = sk_OPENSSL_STRING_new_null();
405                sk_OPENSSL_STRING_push(sksigners, signerfile);
406                signerfile = NULL;
407                if (!skkeys)
408                    skkeys = sk_OPENSSL_STRING_new_null();
409                sk_OPENSSL_STRING_push(skkeys, keyfile);
410            }
411            keyfile = *++args;
412        } else if (!strcmp(*args, "-keyform")) {
413            if (!args[1])
414                goto argerr;
415            keyform = str2fmt(*++args);
416        } else if (!strcmp(*args, "-rctform")) {
417            if (!args[1])
418                goto argerr;
419            rctformat = str2fmt(*++args);
420        } else if (!strcmp(*args, "-certfile")) {
421            if (!args[1])
422                goto argerr;
423            certfile = *++args;
424        } else if (!strcmp(*args, "-CAfile")) {
425            if (!args[1])
426                goto argerr;
427            CAfile = *++args;
428        } else if (!strcmp(*args, "-CApath")) {
429            if (!args[1])
430                goto argerr;
431            CApath = *++args;
432        } else if (!strcmp(*args, "-in")) {
433            if (!args[1])
434                goto argerr;
435            infile = *++args;
436        } else if (!strcmp(*args, "-inform")) {
437            if (!args[1])
438                goto argerr;
439            informat = str2fmt(*++args);
440        } else if (!strcmp(*args, "-outform")) {
441            if (!args[1])
442                goto argerr;
443            outformat = str2fmt(*++args);
444        } else if (!strcmp(*args, "-out")) {
445            if (!args[1])
446                goto argerr;
447            outfile = *++args;
448        } else if (!strcmp(*args, "-content")) {
449            if (!args[1])
450                goto argerr;
451            contfile = *++args;
452        } else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
453            continue;
454        else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)
455            badarg = 1;
456        args++;
457    }
458
459    if (((rr_allorfirst != -1) || rr_from) && !rr_to) {
460        BIO_puts(bio_err, "No Signed Receipts Recipients\n");
461        goto argerr;
462    }
463
464    if (!(operation & SMIME_SIGNERS) && (rr_to || rr_from)) {
465        BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
466        goto argerr;
467    }
468    if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) {
469        BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
470        goto argerr;
471    }
472
473    if (operation & SMIME_SIGNERS) {
474        if (keyfile && !signerfile) {
475            BIO_puts(bio_err, "Illegal -inkey without -signer\n");
476            goto argerr;
477        }
478        /* Check to see if any final signer needs to be appended */
479        if (signerfile) {
480            if (!sksigners)
481                sksigners = sk_OPENSSL_STRING_new_null();
482            sk_OPENSSL_STRING_push(sksigners, signerfile);
483            if (!skkeys)
484                skkeys = sk_OPENSSL_STRING_new_null();
485            if (!keyfile)
486                keyfile = signerfile;
487            sk_OPENSSL_STRING_push(skkeys, keyfile);
488        }
489        if (!sksigners) {
490            BIO_printf(bio_err, "No signer certificate specified\n");
491            badarg = 1;
492        }
493        signerfile = NULL;
494        keyfile = NULL;
495        need_rand = 1;
496    }
497
498    else if (operation == SMIME_DECRYPT) {
499        if (!recipfile && !keyfile && !secret_key && !pwri_pass) {
500            BIO_printf(bio_err,
501                       "No recipient certificate or key specified\n");
502            badarg = 1;
503        }
504    } else if (operation == SMIME_ENCRYPT) {
505        if (!*args && !secret_key && !pwri_pass) {
506            BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
507            badarg = 1;
508        }
509        need_rand = 1;
510    } else if (!operation)
511        badarg = 1;
512
513    if (badarg) {
514 argerr:
515        BIO_printf(bio_err, "Usage cms [options] cert.pem ...\n");
516        BIO_printf(bio_err, "where options are\n");
517        BIO_printf(bio_err, "-encrypt       encrypt message\n");
518        BIO_printf(bio_err, "-decrypt       decrypt encrypted message\n");
519        BIO_printf(bio_err, "-sign          sign message\n");
520        BIO_printf(bio_err, "-verify        verify signed message\n");
521        BIO_printf(bio_err, "-cmsout        output CMS structure\n");
522# ifndef OPENSSL_NO_DES
523        BIO_printf(bio_err, "-des3          encrypt with triple DES\n");
524        BIO_printf(bio_err, "-des           encrypt with DES\n");
525# endif
526# ifndef OPENSSL_NO_SEED
527        BIO_printf(bio_err, "-seed          encrypt with SEED\n");
528# endif
529# ifndef OPENSSL_NO_RC2
530        BIO_printf(bio_err, "-rc2-40        encrypt with RC2-40 (default)\n");
531        BIO_printf(bio_err, "-rc2-64        encrypt with RC2-64\n");
532        BIO_printf(bio_err, "-rc2-128       encrypt with RC2-128\n");
533# endif
534# ifndef OPENSSL_NO_AES
535        BIO_printf(bio_err, "-aes128, -aes192, -aes256\n");
536        BIO_printf(bio_err,
537                   "               encrypt PEM output with cbc aes\n");
538# endif
539# ifndef OPENSSL_NO_CAMELLIA
540        BIO_printf(bio_err, "-camellia128, -camellia192, -camellia256\n");
541        BIO_printf(bio_err,
542                   "               encrypt PEM output with cbc camellia\n");
543# endif
544        BIO_printf(bio_err,
545                   "-nointern      don't search certificates in message for signer\n");
546        BIO_printf(bio_err,
547                   "-nosigs        don't verify message signature\n");
548        BIO_printf(bio_err,
549                   "-noverify      don't verify signers certificate\n");
550        BIO_printf(bio_err,
551                   "-nocerts       don't include signers certificate when signing\n");
552        BIO_printf(bio_err, "-nodetach      use opaque signing\n");
553        BIO_printf(bio_err,
554                   "-noattr        don't include any signed attributes\n");
555        BIO_printf(bio_err,
556                   "-binary        don't translate message to text\n");
557        BIO_printf(bio_err, "-certfile file other certificates file\n");
558        BIO_printf(bio_err, "-certsout file certificate output file\n");
559        BIO_printf(bio_err, "-signer file   signer certificate file\n");
560        BIO_printf(bio_err,
561                   "-recip  file   recipient certificate file for decryption\n");
562        BIO_printf(bio_err, "-keyid         use subject key identifier\n");
563        BIO_printf(bio_err, "-in file       input file\n");
564        BIO_printf(bio_err,
565                   "-inform arg    input format SMIME (default), PEM or DER\n");
566        BIO_printf(bio_err,
567                   "-inkey file    input private key (if not signer or recipient)\n");
568        BIO_printf(bio_err,
569                   "-keyform arg   input private key format (PEM or ENGINE)\n");
570        BIO_printf(bio_err, "-out file      output file\n");
571        BIO_printf(bio_err,
572                   "-outform arg   output format SMIME (default), PEM or DER\n");
573        BIO_printf(bio_err,
574                   "-content file  supply or override content for detached signature\n");
575        BIO_printf(bio_err, "-to addr       to address\n");
576        BIO_printf(bio_err, "-from ad       from address\n");
577        BIO_printf(bio_err, "-subject s     subject\n");
578        BIO_printf(bio_err,
579                   "-text          include or delete text MIME headers\n");
580        BIO_printf(bio_err,
581                   "-CApath dir    trusted certificates directory\n");
582        BIO_printf(bio_err, "-CAfile file   trusted certificates file\n");
583        BIO_printf(bio_err,
584                   "-crl_check     check revocation status of signer's certificate using CRLs\n");
585        BIO_printf(bio_err,
586                   "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
587# ifndef OPENSSL_NO_ENGINE
588        BIO_printf(bio_err,
589                   "-engine e      use engine e, possibly a hardware device.\n");
590# endif
591        BIO_printf(bio_err, "-passin arg    input file pass phrase source\n");
592        BIO_printf(bio_err, "-rand file%cfile%c...\n", LIST_SEPARATOR_CHAR,
593                   LIST_SEPARATOR_CHAR);
594        BIO_printf(bio_err,
595                   "               load the file (or the files in the directory) into\n");
596        BIO_printf(bio_err, "               the random number generator\n");
597        BIO_printf(bio_err,
598                   "cert.pem       recipient certificate(s) for encryption\n");
599        goto end;
600    }
601# ifndef OPENSSL_NO_ENGINE
602    e = setup_engine(bio_err, engine, 0);
603# endif
604
605    if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
606        BIO_printf(bio_err, "Error getting password\n");
607        goto end;
608    }
609
610    if (need_rand) {
611        app_RAND_load_file(NULL, bio_err, (inrand != NULL));
612        if (inrand != NULL)
613            BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
614                       app_RAND_load_files(inrand));
615    }
616
617    ret = 2;
618
619    if (!(operation & SMIME_SIGNERS))
620        flags &= ~CMS_DETACHED;
621
622    if (operation & SMIME_OP) {
623        if (outformat == FORMAT_ASN1)
624            outmode = "wb";
625    } else {
626        if (flags & CMS_BINARY)
627            outmode = "wb";
628    }
629
630    if (operation & SMIME_IP) {
631        if (informat == FORMAT_ASN1)
632            inmode = "rb";
633    } else {
634        if (flags & CMS_BINARY)
635            inmode = "rb";
636    }
637
638    if (operation == SMIME_ENCRYPT) {
639        if (!cipher) {
640# ifndef OPENSSL_NO_DES
641            cipher = EVP_des_ede3_cbc();
642# else
643            BIO_printf(bio_err, "No cipher selected\n");
644            goto end;
645# endif
646        }
647
648        if (secret_key && !secret_keyid) {
649            BIO_printf(bio_err, "No secret key id\n");
650            goto end;
651        }
652
653        if (*args)
654            encerts = sk_X509_new_null();
655        while (*args) {
656            if (!(cert = load_cert(bio_err, *args, FORMAT_PEM,
657                                   NULL, e, "recipient certificate file")))
658                goto end;
659            sk_X509_push(encerts, cert);
660            cert = NULL;
661            args++;
662        }
663    }
664
665    if (certfile) {
666        if (!(other = load_certs(bio_err, certfile, FORMAT_PEM, NULL,
667                                 e, "certificate file"))) {
668            ERR_print_errors(bio_err);
669            goto end;
670        }
671    }
672
673    if (recipfile && (operation == SMIME_DECRYPT)) {
674        if (!(recip = load_cert(bio_err, recipfile, FORMAT_PEM, NULL,
675                                e, "recipient certificate file"))) {
676            ERR_print_errors(bio_err);
677            goto end;
678        }
679    }
680
681    if (operation == SMIME_SIGN_RECEIPT) {
682        if (!(signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL,
683                                 e, "receipt signer certificate file"))) {
684            ERR_print_errors(bio_err);
685            goto end;
686        }
687    }
688
689    if (operation == SMIME_DECRYPT) {
690        if (!keyfile)
691            keyfile = recipfile;
692    } else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT)) {
693        if (!keyfile)
694            keyfile = signerfile;
695    } else
696        keyfile = NULL;
697
698    if (keyfile) {
699        key = load_key(bio_err, keyfile, keyform, 0, passin, e,
700                       "signing key file");
701        if (!key)
702            goto end;
703    }
704
705    if (infile) {
706        if (!(in = BIO_new_file(infile, inmode))) {
707            BIO_printf(bio_err, "Can't open input file %s\n", infile);
708            goto end;
709        }
710    } else
711        in = BIO_new_fp(stdin, BIO_NOCLOSE);
712
713    if (operation & SMIME_IP) {
714        if (informat == FORMAT_SMIME)
715            cms = SMIME_read_CMS(in, &indata);
716        else if (informat == FORMAT_PEM)
717            cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
718        else if (informat == FORMAT_ASN1)
719            cms = d2i_CMS_bio(in, NULL);
720        else {
721            BIO_printf(bio_err, "Bad input format for CMS file\n");
722            goto end;
723        }
724
725        if (!cms) {
726            BIO_printf(bio_err, "Error reading S/MIME message\n");
727            goto end;
728        }
729        if (contfile) {
730            BIO_free(indata);
731            if (!(indata = BIO_new_file(contfile, "rb"))) {
732                BIO_printf(bio_err, "Can't read content file %s\n", contfile);
733                goto end;
734            }
735        }
736        if (certsoutfile) {
737            STACK_OF(X509) *allcerts;
738            allcerts = CMS_get1_certs(cms);
739            if (!save_certs(certsoutfile, allcerts)) {
740                BIO_printf(bio_err,
741                           "Error writing certs to %s\n", certsoutfile);
742                ret = 5;
743                goto end;
744            }
745            sk_X509_pop_free(allcerts, X509_free);
746        }
747    }
748
749    if (rctfile) {
750        char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r";
751        if (!(rctin = BIO_new_file(rctfile, rctmode))) {
752            BIO_printf(bio_err, "Can't open receipt file %s\n", rctfile);
753            goto end;
754        }
755
756        if (rctformat == FORMAT_SMIME)
757            rcms = SMIME_read_CMS(rctin, NULL);
758        else if (rctformat == FORMAT_PEM)
759            rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
760        else if (rctformat == FORMAT_ASN1)
761            rcms = d2i_CMS_bio(rctin, NULL);
762        else {
763            BIO_printf(bio_err, "Bad input format for receipt\n");
764            goto end;
765        }
766
767        if (!rcms) {
768            BIO_printf(bio_err, "Error reading receipt\n");
769            goto end;
770        }
771    }
772
773    if (outfile) {
774        if (!(out = BIO_new_file(outfile, outmode))) {
775            BIO_printf(bio_err, "Can't open output file %s\n", outfile);
776            goto end;
777        }
778    } else {
779        out = BIO_new_fp(stdout, BIO_NOCLOSE);
780# ifdef OPENSSL_SYS_VMS
781        {
782            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
783            out = BIO_push(tmpbio, out);
784        }
785# endif
786    }
787
788    if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT)) {
789        if (!(store = setup_verify(bio_err, CAfile, CApath)))
790            goto end;
791        X509_STORE_set_verify_cb(store, cms_cb);
792        if (vpm)
793            X509_STORE_set1_param(store, vpm);
794    }
795
796    ret = 3;
797
798    if (operation == SMIME_DATA_CREATE) {
799        cms = CMS_data_create(in, flags);
800    } else if (operation == SMIME_DIGEST_CREATE) {
801        cms = CMS_digest_create(in, sign_md, flags);
802    } else if (operation == SMIME_COMPRESS) {
803        cms = CMS_compress(in, -1, flags);
804    } else if (operation == SMIME_ENCRYPT) {
805        flags |= CMS_PARTIAL;
806        cms = CMS_encrypt(encerts, in, cipher, flags);
807        if (!cms)
808            goto end;
809        if (secret_key) {
810            if (!CMS_add0_recipient_key(cms, NID_undef,
811                                        secret_key, secret_keylen,
812                                        secret_keyid, secret_keyidlen,
813                                        NULL, NULL, NULL))
814                goto end;
815            /* NULL these because call absorbs them */
816            secret_key = NULL;
817            secret_keyid = NULL;
818        }
819        if (pwri_pass) {
820            pwri_tmp = (unsigned char *)BUF_strdup((char *)pwri_pass);
821            if (!pwri_tmp)
822                goto end;
823            if (!CMS_add0_recipient_password(cms,
824                                             -1, NID_undef, NID_undef,
825                                             pwri_tmp, -1, NULL))
826                goto end;
827            pwri_tmp = NULL;
828        }
829        if (!(flags & CMS_STREAM)) {
830            if (!CMS_final(cms, in, NULL, flags))
831                goto end;
832        }
833    } else if (operation == SMIME_ENCRYPTED_ENCRYPT) {
834        cms = CMS_EncryptedData_encrypt(in, cipher,
835                                        secret_key, secret_keylen, flags);
836
837    } else if (operation == SMIME_SIGN_RECEIPT) {
838        CMS_ContentInfo *srcms = NULL;
839        STACK_OF(CMS_SignerInfo) *sis;
840        CMS_SignerInfo *si;
841        sis = CMS_get0_SignerInfos(cms);
842        if (!sis)
843            goto end;
844        si = sk_CMS_SignerInfo_value(sis, 0);
845        srcms = CMS_sign_receipt(si, signer, key, other, flags);
846        if (!srcms)
847            goto end;
848        CMS_ContentInfo_free(cms);
849        cms = srcms;
850    } else if (operation & SMIME_SIGNERS) {
851        int i;
852        /*
853         * If detached data content we enable streaming if S/MIME output
854         * format.
855         */
856        if (operation == SMIME_SIGN) {
857
858            if (flags & CMS_DETACHED) {
859                if (outformat == FORMAT_SMIME)
860                    flags |= CMS_STREAM;
861            }
862            flags |= CMS_PARTIAL;
863            cms = CMS_sign(NULL, NULL, other, in, flags);
864            if (!cms)
865                goto end;
866            if (econtent_type)
867                CMS_set1_eContentType(cms, econtent_type);
868
869            if (rr_to) {
870                rr = make_receipt_request(rr_to, rr_allorfirst, rr_from);
871                if (!rr) {
872                    BIO_puts(bio_err,
873                             "Signed Receipt Request Creation Error\n");
874                    goto end;
875                }
876            }
877        } else
878            flags |= CMS_REUSE_DIGEST;
879        for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
880            CMS_SignerInfo *si;
881            signerfile = sk_OPENSSL_STRING_value(sksigners, i);
882            keyfile = sk_OPENSSL_STRING_value(skkeys, i);
883            signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL,
884                               e, "signer certificate");
885            if (!signer)
886                goto end;
887            key = load_key(bio_err, keyfile, keyform, 0, passin, e,
888                           "signing key file");
889            if (!key)
890                goto end;
891            si = CMS_add1_signer(cms, signer, key, sign_md, flags);
892            if (!si)
893                goto end;
894            if (rr && !CMS_add1_ReceiptRequest(si, rr))
895                goto end;
896            X509_free(signer);
897            signer = NULL;
898            EVP_PKEY_free(key);
899            key = NULL;
900        }
901        /* If not streaming or resigning finalize structure */
902        if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM)) {
903            if (!CMS_final(cms, in, NULL, flags))
904                goto end;
905        }
906    }
907
908    if (!cms) {
909        BIO_printf(bio_err, "Error creating CMS structure\n");
910        goto end;
911    }
912
913    ret = 4;
914    if (operation == SMIME_DECRYPT) {
915        if (flags & CMS_DEBUG_DECRYPT)
916            CMS_decrypt(cms, NULL, NULL, NULL, NULL, flags);
917
918        if (secret_key) {
919            if (!CMS_decrypt_set1_key(cms,
920                                      secret_key, secret_keylen,
921                                      secret_keyid, secret_keyidlen)) {
922                BIO_puts(bio_err, "Error decrypting CMS using secret key\n");
923                goto end;
924            }
925        }
926
927        if (key) {
928            if (!CMS_decrypt_set1_pkey(cms, key, recip)) {
929                BIO_puts(bio_err, "Error decrypting CMS using private key\n");
930                goto end;
931            }
932        }
933
934        if (pwri_pass) {
935            if (!CMS_decrypt_set1_password(cms, pwri_pass, -1)) {
936                BIO_puts(bio_err, "Error decrypting CMS using password\n");
937                goto end;
938            }
939        }
940
941        if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags)) {
942            BIO_printf(bio_err, "Error decrypting CMS structure\n");
943            goto end;
944        }
945    } else if (operation == SMIME_DATAOUT) {
946        if (!CMS_data(cms, out, flags))
947            goto end;
948    } else if (operation == SMIME_UNCOMPRESS) {
949        if (!CMS_uncompress(cms, indata, out, flags))
950            goto end;
951    } else if (operation == SMIME_DIGEST_VERIFY) {
952        if (CMS_digest_verify(cms, indata, out, flags) > 0)
953            BIO_printf(bio_err, "Verification successful\n");
954        else {
955            BIO_printf(bio_err, "Verification failure\n");
956            goto end;
957        }
958    } else if (operation == SMIME_ENCRYPTED_DECRYPT) {
959        if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen,
960                                       indata, out, flags))
961            goto end;
962    } else if (operation == SMIME_VERIFY) {
963        if (CMS_verify(cms, other, store, indata, out, flags) > 0)
964            BIO_printf(bio_err, "Verification successful\n");
965        else {
966            BIO_printf(bio_err, "Verification failure\n");
967            if (verify_retcode)
968                ret = verify_err + 32;
969            goto end;
970        }
971        if (signerfile) {
972            STACK_OF(X509) *signers;
973            signers = CMS_get0_signers(cms);
974            if (!save_certs(signerfile, signers)) {
975                BIO_printf(bio_err,
976                           "Error writing signers to %s\n", signerfile);
977                ret = 5;
978                goto end;
979            }
980            sk_X509_free(signers);
981        }
982        if (rr_print)
983            receipt_request_print(bio_err, cms);
984
985    } else if (operation == SMIME_VERIFY_RECEIPT) {
986        if (CMS_verify_receipt(rcms, cms, other, store, flags) > 0)
987            BIO_printf(bio_err, "Verification successful\n");
988        else {
989            BIO_printf(bio_err, "Verification failure\n");
990            goto end;
991        }
992    } else {
993        if (noout) {
994            if (print)
995                CMS_ContentInfo_print_ctx(out, cms, 0, NULL);
996        } else if (outformat == FORMAT_SMIME) {
997            if (to)
998                BIO_printf(out, "To: %s\n", to);
999            if (from)
1000                BIO_printf(out, "From: %s\n", from);
1001            if (subject)
1002                BIO_printf(out, "Subject: %s\n", subject);
1003            if (operation == SMIME_RESIGN)
1004                ret = SMIME_write_CMS(out, cms, indata, flags);
1005            else
1006                ret = SMIME_write_CMS(out, cms, in, flags);
1007        } else if (outformat == FORMAT_PEM)
1008            ret = PEM_write_bio_CMS_stream(out, cms, in, flags);
1009        else if (outformat == FORMAT_ASN1)
1010            ret = i2d_CMS_bio_stream(out, cms, in, flags);
1011        else {
1012            BIO_printf(bio_err, "Bad output format for CMS file\n");
1013            goto end;
1014        }
1015        if (ret <= 0) {
1016            ret = 6;
1017            goto end;
1018        }
1019    }
1020    ret = 0;
1021 end:
1022    if (ret)
1023        ERR_print_errors(bio_err);
1024    if (need_rand)
1025        app_RAND_write_file(NULL, bio_err);
1026    sk_X509_pop_free(encerts, X509_free);
1027    sk_X509_pop_free(other, X509_free);
1028    if (vpm)
1029        X509_VERIFY_PARAM_free(vpm);
1030    if (sksigners)
1031        sk_OPENSSL_STRING_free(sksigners);
1032    if (skkeys)
1033        sk_OPENSSL_STRING_free(skkeys);
1034    if (secret_key)
1035        OPENSSL_free(secret_key);
1036    if (secret_keyid)
1037        OPENSSL_free(secret_keyid);
1038    if (pwri_tmp)
1039        OPENSSL_free(pwri_tmp);
1040    if (econtent_type)
1041        ASN1_OBJECT_free(econtent_type);
1042    if (rr)
1043        CMS_ReceiptRequest_free(rr);
1044    if (rr_to)
1045        sk_OPENSSL_STRING_free(rr_to);
1046    if (rr_from)
1047        sk_OPENSSL_STRING_free(rr_from);
1048    X509_STORE_free(store);
1049    X509_free(cert);
1050    X509_free(recip);
1051    X509_free(signer);
1052    EVP_PKEY_free(key);
1053    CMS_ContentInfo_free(cms);
1054    CMS_ContentInfo_free(rcms);
1055    BIO_free(rctin);
1056    BIO_free(in);
1057    BIO_free(indata);
1058    BIO_free_all(out);
1059    if (passin)
1060        OPENSSL_free(passin);
1061    return (ret);
1062}
1063
1064static int save_certs(char *signerfile, STACK_OF(X509) *signers)
1065{
1066    int i;
1067    BIO *tmp;
1068    if (!signerfile)
1069        return 1;
1070    tmp = BIO_new_file(signerfile, "w");
1071    if (!tmp)
1072        return 0;
1073    for (i = 0; i < sk_X509_num(signers); i++)
1074        PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
1075    BIO_free(tmp);
1076    return 1;
1077}
1078
1079/* Minimal callback just to output policy info (if any) */
1080
1081static int cms_cb(int ok, X509_STORE_CTX *ctx)
1082{
1083    int error;
1084
1085    error = X509_STORE_CTX_get_error(ctx);
1086
1087    verify_err = error;
1088
1089    if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
1090        && ((error != X509_V_OK) || (ok != 2)))
1091        return ok;
1092
1093    policies_print(NULL, ctx);
1094
1095    return ok;
1096
1097}
1098
1099static void gnames_stack_print(BIO *out, STACK_OF(GENERAL_NAMES) *gns)
1100{
1101    STACK_OF(GENERAL_NAME) *gens;
1102    GENERAL_NAME *gen;
1103    int i, j;
1104    for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++) {
1105        gens = sk_GENERAL_NAMES_value(gns, i);
1106        for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) {
1107            gen = sk_GENERAL_NAME_value(gens, j);
1108            BIO_puts(out, "    ");
1109            GENERAL_NAME_print(out, gen);
1110            BIO_puts(out, "\n");
1111        }
1112    }
1113    return;
1114}
1115
1116static void receipt_request_print(BIO *out, CMS_ContentInfo *cms)
1117{
1118    STACK_OF(CMS_SignerInfo) *sis;
1119    CMS_SignerInfo *si;
1120    CMS_ReceiptRequest *rr;
1121    int allorfirst;
1122    STACK_OF(GENERAL_NAMES) *rto, *rlist;
1123    ASN1_STRING *scid;
1124    int i, rv;
1125    sis = CMS_get0_SignerInfos(cms);
1126    for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++) {
1127        si = sk_CMS_SignerInfo_value(sis, i);
1128        rv = CMS_get1_ReceiptRequest(si, &rr);
1129        BIO_printf(bio_err, "Signer %d:\n", i + 1);
1130        if (rv == 0)
1131            BIO_puts(bio_err, "  No Receipt Request\n");
1132        else if (rv < 0) {
1133            BIO_puts(bio_err, "  Receipt Request Parse Error\n");
1134            ERR_print_errors(bio_err);
1135        } else {
1136            char *id;
1137            int idlen;
1138            CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst,
1139                                           &rlist, &rto);
1140            BIO_puts(out, "  Signed Content ID:\n");
1141            idlen = ASN1_STRING_length(scid);
1142            id = (char *)ASN1_STRING_data(scid);
1143            BIO_dump_indent(out, id, idlen, 4);
1144            BIO_puts(out, "  Receipts From");
1145            if (rlist) {
1146                BIO_puts(out, " List:\n");
1147                gnames_stack_print(out, rlist);
1148            } else if (allorfirst == 1)
1149                BIO_puts(out, ": First Tier\n");
1150            else if (allorfirst == 0)
1151                BIO_puts(out, ": All\n");
1152            else
1153                BIO_printf(out, " Unknown (%d)\n", allorfirst);
1154            BIO_puts(out, "  Receipts To:\n");
1155            gnames_stack_print(out, rto);
1156        }
1157        if (rr)
1158            CMS_ReceiptRequest_free(rr);
1159    }
1160}
1161
1162static STACK_OF(GENERAL_NAMES) *make_names_stack(STACK_OF(OPENSSL_STRING) *ns)
1163{
1164    int i;
1165    STACK_OF(GENERAL_NAMES) *ret;
1166    GENERAL_NAMES *gens = NULL;
1167    GENERAL_NAME *gen = NULL;
1168    ret = sk_GENERAL_NAMES_new_null();
1169    if (!ret)
1170        goto err;
1171    for (i = 0; i < sk_OPENSSL_STRING_num(ns); i++) {
1172        char *str = sk_OPENSSL_STRING_value(ns, i);
1173        gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0);
1174        if (!gen)
1175            goto err;
1176        gens = GENERAL_NAMES_new();
1177        if (!gens)
1178            goto err;
1179        if (!sk_GENERAL_NAME_push(gens, gen))
1180            goto err;
1181        gen = NULL;
1182        if (!sk_GENERAL_NAMES_push(ret, gens))
1183            goto err;
1184        gens = NULL;
1185    }
1186
1187    return ret;
1188
1189 err:
1190    if (ret)
1191        sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free);
1192    if (gens)
1193        GENERAL_NAMES_free(gens);
1194    if (gen)
1195        GENERAL_NAME_free(gen);
1196    return NULL;
1197}
1198
1199static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING)
1200                                                *rr_to, int rr_allorfirst, STACK_OF(OPENSSL_STRING)
1201                                                *rr_from)
1202{
1203    STACK_OF(GENERAL_NAMES) *rct_to, *rct_from;
1204    CMS_ReceiptRequest *rr;
1205    rct_to = make_names_stack(rr_to);
1206    if (!rct_to)
1207        goto err;
1208    if (rr_from) {
1209        rct_from = make_names_stack(rr_from);
1210        if (!rct_from)
1211            goto err;
1212    } else
1213        rct_from = NULL;
1214    rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from,
1215                                    rct_to);
1216    return rr;
1217 err:
1218    return NULL;
1219}
1220
1221#endif
1222