![[BACK]](/icons/back.gif){kind=icon}
Return to smime.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / openssl|
Return to smime.c CVS log | Up to [local] / src / usr.bin / openssl |
1.4 ! bcook 1: /* $OpenBSD: smime.c,v 1.3 2015/08/22 16:36:05 jsing Exp $ */
1.1 jsing 2: /* Written by Dr Stephen N Henson (steve@openssl.org) 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: */
58:
59: /* S/MIME utility function */
60:
61: #include <stdio.h>
62: #include <string.h>
63:
64: #include "apps.h"
65:
66: #include <openssl/crypto.h>
67: #include <openssl/err.h>
68: #include <openssl/pem.h>
69: #include <openssl/x509_vfy.h>
70: #include <openssl/x509v3.h>
71:
72: static int save_certs(char *signerfile, STACK_OF(X509) * signers);
73: static int smime_cb(int ok, X509_STORE_CTX * ctx);
74:
75: #define SMIME_OP 0x10
76: #define SMIME_IP 0x20
77: #define SMIME_SIGNERS 0x40
78: #define SMIME_ENCRYPT (1 | SMIME_OP)
79: #define SMIME_DECRYPT (2 | SMIME_IP)
80: #define SMIME_SIGN (3 | SMIME_OP | SMIME_SIGNERS)
81: #define SMIME_VERIFY (4 | SMIME_IP)
82: #define SMIME_PK7OUT (5 | SMIME_IP | SMIME_OP)
83: #define SMIME_RESIGN (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
84:
85: int
86: smime_main(int argc, char **argv)
87: {
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: STACK_OF(OPENSSL_STRING) * sksigners = NULL, *skkeys = NULL;
95: char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
96: const EVP_CIPHER *cipher = NULL;
97: PKCS7 *p7 = NULL;
98: X509_STORE *store = NULL;
99: X509 *cert = NULL, *recip = NULL, *signer = NULL;
100: EVP_PKEY *key = NULL;
101: STACK_OF(X509) * encerts = NULL, *other = NULL;
102: BIO *in = NULL, *out = NULL, *indata = NULL;
103: int badarg = 0;
104: int flags = PKCS7_DETACHED;
105: char *to = NULL, *from = NULL, *subject = NULL;
106: char *CAfile = NULL, *CApath = NULL;
107: char *passargin = NULL, *passin = NULL;
108: int indef = 0;
109: const EVP_MD *sign_md = NULL;
110: int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
111: int keyform = FORMAT_PEM;
112:
113: X509_VERIFY_PARAM *vpm = NULL;
114:
115: args = argv + 1;
116: ret = 1;
117:
118: while (!badarg && *args && *args[0] == '-') {
119: if (!strcmp(*args, "-encrypt"))
120: operation = SMIME_ENCRYPT;
121: else if (!strcmp(*args, "-decrypt"))
122: operation = SMIME_DECRYPT;
123: else if (!strcmp(*args, "-sign"))
124: operation = SMIME_SIGN;
125: else if (!strcmp(*args, "-resign"))
126: operation = SMIME_RESIGN;
127: else if (!strcmp(*args, "-verify"))
128: operation = SMIME_VERIFY;
129: else if (!strcmp(*args, "-pk7out"))
130: operation = SMIME_PK7OUT;
131: #ifndef OPENSSL_NO_DES
132: else if (!strcmp(*args, "-des3"))
133: cipher = EVP_des_ede3_cbc();
134: else if (!strcmp(*args, "-des"))
135: cipher = EVP_des_cbc();
136: #endif
137: #ifndef OPENSSL_NO_RC2
138: else if (!strcmp(*args, "-rc2-40"))
139: cipher = EVP_rc2_40_cbc();
140: else if (!strcmp(*args, "-rc2-128"))
141: cipher = EVP_rc2_cbc();
142: else if (!strcmp(*args, "-rc2-64"))
143: cipher = EVP_rc2_64_cbc();
144: #endif
145: #ifndef OPENSSL_NO_AES
146: else if (!strcmp(*args, "-aes128"))
147: cipher = EVP_aes_128_cbc();
148: else if (!strcmp(*args, "-aes192"))
149: cipher = EVP_aes_192_cbc();
150: else if (!strcmp(*args, "-aes256"))
151: cipher = EVP_aes_256_cbc();
152: #endif
153: #ifndef OPENSSL_NO_CAMELLIA
154: else if (!strcmp(*args, "-camellia128"))
155: cipher = EVP_camellia_128_cbc();
156: else if (!strcmp(*args, "-camellia192"))
157: cipher = EVP_camellia_192_cbc();
158: else if (!strcmp(*args, "-camellia256"))
159: cipher = EVP_camellia_256_cbc();
160: #endif
161: else if (!strcmp(*args, "-text"))
162: flags |= PKCS7_TEXT;
163: else if (!strcmp(*args, "-nointern"))
164: flags |= PKCS7_NOINTERN;
165: else if (!strcmp(*args, "-noverify"))
166: flags |= PKCS7_NOVERIFY;
167: else if (!strcmp(*args, "-nochain"))
168: flags |= PKCS7_NOCHAIN;
169: else if (!strcmp(*args, "-nocerts"))
170: flags |= PKCS7_NOCERTS;
171: else if (!strcmp(*args, "-noattr"))
172: flags |= PKCS7_NOATTR;
173: else if (!strcmp(*args, "-nodetach"))
174: flags &= ~PKCS7_DETACHED;
175: else if (!strcmp(*args, "-nosmimecap"))
176: flags |= PKCS7_NOSMIMECAP;
177: else if (!strcmp(*args, "-binary"))
178: flags |= PKCS7_BINARY;
179: else if (!strcmp(*args, "-nosigs"))
180: flags |= PKCS7_NOSIGS;
181: else if (!strcmp(*args, "-stream"))
182: indef = 1;
183: else if (!strcmp(*args, "-indef"))
184: indef = 1;
185: else if (!strcmp(*args, "-noindef"))
186: indef = 0;
187: else if (!strcmp(*args, "-nooldmime"))
188: flags |= PKCS7_NOOLDMIMETYPE;
189: else if (!strcmp(*args, "-crlfeol"))
190: flags |= PKCS7_CRLFEOL;
191: else if (!strcmp(*args, "-passin")) {
192: if (!args[1])
193: goto argerr;
194: passargin = *++args;
195: } else if (!strcmp(*args, "-to")) {
196: if (!args[1])
197: goto argerr;
198: to = *++args;
199: } else if (!strcmp(*args, "-from")) {
200: if (!args[1])
201: goto argerr;
202: from = *++args;
203: } else if (!strcmp(*args, "-subject")) {
204: if (!args[1])
205: goto argerr;
206: subject = *++args;
207: } else if (!strcmp(*args, "-signer")) {
208: if (!args[1])
209: goto argerr;
210: /* If previous -signer argument add signer to list */
211:
212: if (signerfile) {
213: if (!sksigners)
214: sksigners = sk_OPENSSL_STRING_new_null();
215: sk_OPENSSL_STRING_push(sksigners, signerfile);
216: if (!keyfile)
217: keyfile = signerfile;
218: if (!skkeys)
219: skkeys = sk_OPENSSL_STRING_new_null();
220: sk_OPENSSL_STRING_push(skkeys, keyfile);
221: keyfile = NULL;
222: }
223: signerfile = *++args;
224: } else if (!strcmp(*args, "-recip")) {
225: if (!args[1])
226: goto argerr;
227: recipfile = *++args;
228: } else if (!strcmp(*args, "-md")) {
229: if (!args[1])
230: goto argerr;
231: sign_md = EVP_get_digestbyname(*++args);
232: if (sign_md == NULL) {
233: BIO_printf(bio_err, "Unknown digest %s\n",
234: *args);
235: goto argerr;
236: }
237: } else if (!strcmp(*args, "-inkey")) {
238: if (!args[1])
239: goto argerr;
240: /* If previous -inkey arument add signer to list */
241: if (keyfile) {
242: if (!signerfile) {
243: BIO_puts(bio_err, "Illegal -inkey without -signer\n");
244: goto argerr;
245: }
246: if (!sksigners)
247: sksigners = sk_OPENSSL_STRING_new_null();
248: sk_OPENSSL_STRING_push(sksigners, signerfile);
249: signerfile = NULL;
250: if (!skkeys)
251: skkeys = sk_OPENSSL_STRING_new_null();
252: sk_OPENSSL_STRING_push(skkeys, keyfile);
253: }
254: keyfile = *++args;
255: } else if (!strcmp(*args, "-keyform")) {
256: if (!args[1])
257: goto argerr;
258: keyform = str2fmt(*++args);
259: } else if (!strcmp(*args, "-certfile")) {
260: if (!args[1])
261: goto argerr;
262: certfile = *++args;
263: } else if (!strcmp(*args, "-CAfile")) {
264: if (!args[1])
265: goto argerr;
266: CAfile = *++args;
267: } else if (!strcmp(*args, "-CApath")) {
268: if (!args[1])
269: goto argerr;
270: CApath = *++args;
271: } else if (!strcmp(*args, "-in")) {
272: if (!args[1])
273: goto argerr;
274: infile = *++args;
275: } else if (!strcmp(*args, "-inform")) {
276: if (!args[1])
277: goto argerr;
278: informat = str2fmt(*++args);
279: } else if (!strcmp(*args, "-outform")) {
280: if (!args[1])
281: goto argerr;
282: outformat = str2fmt(*++args);
283: } else if (!strcmp(*args, "-out")) {
284: if (!args[1])
285: goto argerr;
286: outfile = *++args;
287: } else if (!strcmp(*args, "-content")) {
288: if (!args[1])
289: goto argerr;
290: contfile = *++args;
291: } else if (args_verify(&args, NULL, &badarg, bio_err, &vpm))
292: continue;
293: else if ((cipher = EVP_get_cipherbyname(*args + 1)) == NULL)
294: badarg = 1;
295: args++;
296: }
297:
298: if (!(operation & SMIME_SIGNERS) && (skkeys || sksigners)) {
299: BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
300: goto argerr;
301: }
302: if (operation & SMIME_SIGNERS) {
303: /* Check to see if any final signer needs to be appended */
304: if (keyfile && !signerfile) {
305: BIO_puts(bio_err, "Illegal -inkey without -signer\n");
306: goto argerr;
307: }
308: if (signerfile) {
309: if (!sksigners)
310: sksigners = sk_OPENSSL_STRING_new_null();
311: sk_OPENSSL_STRING_push(sksigners, signerfile);
312: if (!skkeys)
313: skkeys = sk_OPENSSL_STRING_new_null();
314: if (!keyfile)
315: keyfile = signerfile;
316: sk_OPENSSL_STRING_push(skkeys, keyfile);
317: }
318: if (!sksigners) {
319: BIO_printf(bio_err, "No signer certificate specified\n");
320: badarg = 1;
321: }
322: signerfile = NULL;
323: keyfile = NULL;
324: } else if (operation == SMIME_DECRYPT) {
325: if (!recipfile && !keyfile) {
326: BIO_printf(bio_err, "No recipient certificate or key specified\n");
327: badarg = 1;
328: }
329: } else if (operation == SMIME_ENCRYPT) {
330: if (!*args) {
331: BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
332: badarg = 1;
333: }
334: } else if (!operation)
335: badarg = 1;
336:
337: if (badarg) {
338: argerr:
339: BIO_printf(bio_err, "Usage smime [options] cert.pem ...\n");
340: BIO_printf(bio_err, "where options are\n");
341: BIO_printf(bio_err, "-encrypt encrypt message\n");
342: BIO_printf(bio_err, "-decrypt decrypt encrypted message\n");
343: BIO_printf(bio_err, "-sign sign message\n");
344: BIO_printf(bio_err, "-verify verify signed message\n");
345: BIO_printf(bio_err, "-pk7out output PKCS#7 structure\n");
346: #ifndef OPENSSL_NO_DES
347: BIO_printf(bio_err, "-des3 encrypt with triple DES\n");
348: BIO_printf(bio_err, "-des encrypt with DES\n");
349: #endif
350: #ifndef OPENSSL_NO_RC2
351: BIO_printf(bio_err, "-rc2-40 encrypt with RC2-40 (default)\n");
352: BIO_printf(bio_err, "-rc2-64 encrypt with RC2-64\n");
353: BIO_printf(bio_err, "-rc2-128 encrypt with RC2-128\n");
354: #endif
355: #ifndef OPENSSL_NO_AES
356: BIO_printf(bio_err, "-aes128, -aes192, -aes256\n");
357: BIO_printf(bio_err, " encrypt PEM output with cbc aes\n");
358: #endif
359: #ifndef OPENSSL_NO_CAMELLIA
360: BIO_printf(bio_err, "-camellia128, -camellia192, -camellia256\n");
361: BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n");
362: #endif
363: BIO_printf(bio_err, "-nointern don't search certificates in message for signer\n");
364: BIO_printf(bio_err, "-nosigs don't verify message signature\n");
365: BIO_printf(bio_err, "-noverify don't verify signers certificate\n");
366: BIO_printf(bio_err, "-nocerts don't include signers certificate when signing\n");
367: BIO_printf(bio_err, "-nodetach use opaque signing\n");
368: BIO_printf(bio_err, "-noattr don't include any signed attributes\n");
369: BIO_printf(bio_err, "-binary don't translate message to text\n");
370: BIO_printf(bio_err, "-certfile file other certificates file\n");
371: BIO_printf(bio_err, "-signer file signer certificate file\n");
372: BIO_printf(bio_err, "-recip file recipient certificate file for decryption\n");
373: BIO_printf(bio_err, "-in file input file\n");
374: BIO_printf(bio_err, "-inform arg input format SMIME (default), PEM or DER\n");
375: BIO_printf(bio_err, "-inkey file input private key (if not signer or recipient)\n");
1.4 ! bcook 376: BIO_printf(bio_err, "-keyform arg input private key format (PEM)\n");
1.1 jsing 377: BIO_printf(bio_err, "-out file output file\n");
378: BIO_printf(bio_err, "-outform arg output format SMIME (default), PEM or DER\n");
379: BIO_printf(bio_err, "-content file supply or override content for detached signature\n");
380: BIO_printf(bio_err, "-to addr to address\n");
381: BIO_printf(bio_err, "-from ad from address\n");
382: BIO_printf(bio_err, "-subject s subject\n");
383: BIO_printf(bio_err, "-text include or delete text MIME headers\n");
384: BIO_printf(bio_err, "-CApath dir trusted certificates directory\n");
385: BIO_printf(bio_err, "-CAfile file trusted certificates file\n");
386: BIO_printf(bio_err, "-crl_check check revocation status of signer's certificate using CRLs\n");
387: BIO_printf(bio_err, "-crl_check_all check revocation status of signer's certificate chain using CRLs\n");
388: BIO_printf(bio_err, "-passin arg input file pass phrase source\n");
389: BIO_printf(bio_err, "cert.pem recipient certificate(s) for encryption\n");
390: goto end;
391: }
392:
393: if (!app_passwd(bio_err, passargin, NULL, &passin, NULL)) {
394: BIO_printf(bio_err, "Error getting password\n");
395: goto end;
396: }
397: ret = 2;
398:
399: if (!(operation & SMIME_SIGNERS))
400: flags &= ~PKCS7_DETACHED;
401:
402: if (operation & SMIME_OP) {
403: if (outformat == FORMAT_ASN1)
404: outmode = "wb";
405: } else {
406: if (flags & PKCS7_BINARY)
407: outmode = "wb";
408: }
409:
410: if (operation & SMIME_IP) {
411: if (informat == FORMAT_ASN1)
412: inmode = "rb";
413: } else {
414: if (flags & PKCS7_BINARY)
415: inmode = "rb";
416: }
417:
418: if (operation == SMIME_ENCRYPT) {
419: if (!cipher) {
420: #ifndef OPENSSL_NO_RC2
421: cipher = EVP_rc2_40_cbc();
422: #else
423: BIO_printf(bio_err, "No cipher selected\n");
424: goto end;
425: #endif
426: }
427: encerts = sk_X509_new_null();
428: while (*args) {
429: if (!(cert = load_cert(bio_err, *args, FORMAT_PEM,
1.4 ! bcook 430: NULL, "recipient certificate file"))) {
1.1 jsing 431: goto end;
432: }
433: sk_X509_push(encerts, cert);
434: cert = NULL;
435: args++;
436: }
437: }
438: if (certfile) {
439: if (!(other = load_certs(bio_err, certfile, FORMAT_PEM, NULL,
1.4 ! bcook 440: "certificate file"))) {
1.1 jsing 441: ERR_print_errors(bio_err);
442: goto end;
443: }
444: }
445: if (recipfile && (operation == SMIME_DECRYPT)) {
446: if (!(recip = load_cert(bio_err, recipfile, FORMAT_PEM, NULL,
1.4 ! bcook 447: "recipient certificate file"))) {
1.1 jsing 448: ERR_print_errors(bio_err);
449: goto end;
450: }
451: }
452: if (operation == SMIME_DECRYPT) {
453: if (!keyfile)
454: keyfile = recipfile;
455: } else if (operation == SMIME_SIGN) {
456: if (!keyfile)
457: keyfile = signerfile;
458: } else
459: keyfile = NULL;
460:
461: if (keyfile) {
1.4 ! bcook 462: key = load_key(bio_err, keyfile, keyform, 0, passin,
1.1 jsing 463: "signing key file");
464: if (!key)
465: goto end;
466: }
467: if (infile) {
468: if (!(in = BIO_new_file(infile, inmode))) {
469: BIO_printf(bio_err,
470: "Can't open input file %s\n", infile);
471: goto end;
472: }
473: } else
474: in = BIO_new_fp(stdin, BIO_NOCLOSE);
475:
476: if (operation & SMIME_IP) {
477: if (informat == FORMAT_SMIME)
478: p7 = SMIME_read_PKCS7(in, &indata);
479: else if (informat == FORMAT_PEM)
480: p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
481: else if (informat == FORMAT_ASN1)
482: p7 = d2i_PKCS7_bio(in, NULL);
483: else {
484: BIO_printf(bio_err, "Bad input format for PKCS#7 file\n");
485: goto end;
486: }
487:
488: if (!p7) {
489: BIO_printf(bio_err, "Error reading S/MIME message\n");
490: goto end;
491: }
492: if (contfile) {
493: BIO_free(indata);
494: if (!(indata = BIO_new_file(contfile, "rb"))) {
495: BIO_printf(bio_err, "Can't read content file %s\n", contfile);
496: goto end;
497: }
498: }
499: }
500: if (outfile) {
501: if (!(out = BIO_new_file(outfile, outmode))) {
502: BIO_printf(bio_err,
503: "Can't open output file %s\n", outfile);
504: goto end;
505: }
506: } else {
507: out = BIO_new_fp(stdout, BIO_NOCLOSE);
508: }
509:
510: if (operation == SMIME_VERIFY) {
511: if (!(store = setup_verify(bio_err, CAfile, CApath)))
512: goto end;
513: X509_STORE_set_verify_cb(store, smime_cb);
514: if (vpm)
515: X509_STORE_set1_param(store, vpm);
516: }
517: ret = 3;
518:
519: if (operation == SMIME_ENCRYPT) {
520: if (indef)
521: flags |= PKCS7_STREAM;
522: p7 = PKCS7_encrypt(encerts, in, cipher, flags);
523: } else if (operation & SMIME_SIGNERS) {
524: int i;
525: /*
526: * If detached data content we only enable streaming if
527: * S/MIME output format.
528: */
529: if (operation == SMIME_SIGN) {
530: if (flags & PKCS7_DETACHED) {
531: if (outformat == FORMAT_SMIME)
532: flags |= PKCS7_STREAM;
533: } else if (indef)
534: flags |= PKCS7_STREAM;
535: flags |= PKCS7_PARTIAL;
536: p7 = PKCS7_sign(NULL, NULL, other, in, flags);
537: if (!p7)
538: goto end;
539: } else
540: flags |= PKCS7_REUSE_DIGEST;
541: for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
542: signerfile = sk_OPENSSL_STRING_value(sksigners, i);
543: keyfile = sk_OPENSSL_STRING_value(skkeys, i);
544: signer = load_cert(bio_err, signerfile, FORMAT_PEM, NULL,
1.4 ! bcook 545: "signer certificate");
1.1 jsing 546: if (!signer)
547: goto end;
1.4 ! bcook 548: key = load_key(bio_err, keyfile, keyform, 0, passin,
1.1 jsing 549: "signing key file");
550: if (!key)
551: goto end;
552: if (!PKCS7_sign_add_signer(p7, signer, key,
553: sign_md, flags))
554: goto end;
555: X509_free(signer);
556: signer = NULL;
557: EVP_PKEY_free(key);
558: key = NULL;
559: }
560: /* If not streaming or resigning finalize structure */
561: if ((operation == SMIME_SIGN) && !(flags & PKCS7_STREAM)) {
562: if (!PKCS7_final(p7, in, flags))
563: goto end;
564: }
565: }
566: if (!p7) {
567: BIO_printf(bio_err, "Error creating PKCS#7 structure\n");
568: goto end;
569: }
570: ret = 4;
571: if (operation == SMIME_DECRYPT) {
572: if (!PKCS7_decrypt(p7, key, recip, out, flags)) {
573: BIO_printf(bio_err, "Error decrypting PKCS#7 structure\n");
574: goto end;
575: }
576: } else if (operation == SMIME_VERIFY) {
577: STACK_OF(X509) * signers;
578: if (PKCS7_verify(p7, other, store, indata, out, flags))
579: BIO_printf(bio_err, "Verification successful\n");
580: else {
581: BIO_printf(bio_err, "Verification failure\n");
582: goto end;
583: }
584: signers = PKCS7_get0_signers(p7, other, flags);
585: if (!save_certs(signerfile, signers)) {
586: BIO_printf(bio_err, "Error writing signers to %s\n",
587: signerfile);
588: ret = 5;
589: goto end;
590: }
591: sk_X509_free(signers);
592: } else if (operation == SMIME_PK7OUT)
593: PEM_write_bio_PKCS7(out, p7);
594: else {
595: if (to)
596: BIO_printf(out, "To: %s\n", to);
597: if (from)
598: BIO_printf(out, "From: %s\n", from);
599: if (subject)
600: BIO_printf(out, "Subject: %s\n", subject);
601: if (outformat == FORMAT_SMIME) {
602: if (operation == SMIME_RESIGN)
603: SMIME_write_PKCS7(out, p7, indata, flags);
604: else
605: SMIME_write_PKCS7(out, p7, in, flags);
606: } else if (outformat == FORMAT_PEM)
607: PEM_write_bio_PKCS7_stream(out, p7, in, flags);
608: else if (outformat == FORMAT_ASN1)
609: i2d_PKCS7_bio_stream(out, p7, in, flags);
610: else {
611: BIO_printf(bio_err, "Bad output format for PKCS#7 file\n");
612: goto end;
613: }
614: }
615: ret = 0;
616: end:
617: if (ret)
618: ERR_print_errors(bio_err);
619: sk_X509_pop_free(encerts, X509_free);
620: sk_X509_pop_free(other, X509_free);
621: if (vpm)
622: X509_VERIFY_PARAM_free(vpm);
623: if (sksigners)
624: sk_OPENSSL_STRING_free(sksigners);
625: if (skkeys)
626: sk_OPENSSL_STRING_free(skkeys);
627: X509_STORE_free(store);
628: X509_free(cert);
629: X509_free(recip);
630: X509_free(signer);
631: EVP_PKEY_free(key);
632: PKCS7_free(p7);
633: BIO_free(in);
634: BIO_free(indata);
635: BIO_free_all(out);
636: free(passin);
637:
638: return (ret);
639: }
640:
641: static int
642: save_certs(char *signerfile, STACK_OF(X509) * signers)
643: {
644: int i;
645: BIO *tmp;
646: if (!signerfile)
647: return 1;
648: tmp = BIO_new_file(signerfile, "w");
649: if (!tmp)
650: return 0;
651: for (i = 0; i < sk_X509_num(signers); i++)
652: PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
653: BIO_free(tmp);
654: return 1;
655: }
656:
657:
658: /* Minimal callback just to output policy info (if any) */
659:
660: static int
661: smime_cb(int ok, X509_STORE_CTX * ctx)
662: {
663: int error;
664:
665: error = X509_STORE_CTX_get_error(ctx);
666:
667: if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
668: && ((error != X509_V_OK) || (ok != 2)))
669: return ok;
670:
671: policies_print(NULL, ctx);
672:
673: return ok;
674:
675: }