apps/cms.c

   1 /*
   2  * Copyright 2008-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 /* CMS utility function */
  11
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include "apps.h"
  15
  16 #ifndef OPENSSL_NO_CMS
  17
  18 # include <openssl/crypto.h>
  19 # include <openssl/pem.h>
  20 # include <openssl/err.h>
  21 # include <openssl/x509_vfy.h>
  22 # include <openssl/x509v3.h>
  23 # include <openssl/cms.h>
  24
  25 static int save_certs(char *signerfile, STACK_OF(X509) *signers);
  26 static int cms_cb(int ok, X509_STORE_CTX *ctx);
  27 static void receipt_request_print(CMS_ContentInfo *cms);
  28 static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING)
  29                                                 *rr_to, int rr_allorfirst, STACK_OF(OPENSSL_STRING)
  30                                                 *rr_from);
  31 static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
  32                               STACK_OF(OPENSSL_STRING) *param);
  33
  34 # define SMIME_OP        0x10
  35 # define SMIME_IP        0x20
  36 # define SMIME_SIGNERS   0x40
  37 # define SMIME_ENCRYPT           (1 | SMIME_OP)
  38 # define SMIME_DECRYPT           (2 | SMIME_IP)
  39 # define SMIME_SIGN              (3 | SMIME_OP | SMIME_SIGNERS)
  40 # define SMIME_VERIFY            (4 | SMIME_IP)
  41 # define SMIME_CMSOUT            (5 | SMIME_IP | SMIME_OP)
  42 # define SMIME_RESIGN            (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
  43 # define SMIME_DATAOUT           (7 | SMIME_IP)
  44 # define SMIME_DATA_CREATE       (8 | SMIME_OP)
  45 # define SMIME_DIGEST_VERIFY     (9 | SMIME_IP)
  46 # define SMIME_DIGEST_CREATE     (10 | SMIME_OP)
  47 # define SMIME_UNCOMPRESS        (11 | SMIME_IP)
  48 # define SMIME_COMPRESS          (12 | SMIME_OP)
  49 # define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
  50 # define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)
  51 # define SMIME_SIGN_RECEIPT      (15 | SMIME_IP | SMIME_OP)
  52 # define SMIME_VERIFY_RECEIPT    (16 | SMIME_IP)
  53
  54 static int verify_err = 0;
  55
  56 typedef struct cms_key_param_st cms_key_param;
  57
  58 struct cms_key_param_st {
  59     int idx;
  60     STACK_OF(OPENSSL_STRING) *param;
  61     cms_key_param *next;
  62 };
  63
  64 typedef enum OPTION_choice {
  65     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  66     OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENCRYPT,
  67     OPT_DECRYPT, OPT_SIGN, OPT_SIGN_RECEIPT, OPT_RESIGN,
  68     OPT_VERIFY, OPT_VERIFY_RETCODE, OPT_VERIFY_RECEIPT,
  69     OPT_CMSOUT, OPT_DATA_OUT, OPT_DATA_CREATE, OPT_DIGEST_VERIFY,
  70     OPT_DIGEST_CREATE, OPT_COMPRESS, OPT_UNCOMPRESS,
  71     OPT_ED_DECRYPT, OPT_ED_ENCRYPT, OPT_DEBUG_DECRYPT, OPT_TEXT,
  72     OPT_ASCIICRLF, OPT_NOINTERN, OPT_NOVERIFY, OPT_NOCERTS,
  73     OPT_NOATTR, OPT_NODETACH, OPT_NOSMIMECAP, OPT_BINARY, OPT_KEYID,
  74     OPT_NOSIGS, OPT_NO_CONTENT_VERIFY, OPT_NO_ATTR_VERIFY, OPT_INDEF,
  75     OPT_NOINDEF, OPT_CRLFEOL, OPT_NOOUT, OPT_RR_PRINT,
  76     OPT_RR_ALL, OPT_RR_FIRST, OPT_RCTFORM, OPT_CERTFILE, OPT_CAFILE,
  77     OPT_CAPATH, OPT_NOCAPATH, OPT_NOCAFILE,OPT_CONTENT, OPT_PRINT,
  78     OPT_SECRETKEY, OPT_SECRETKEYID, OPT_PWRI_PASSWORD, OPT_ECONTENT_TYPE,
  79     OPT_PASSIN, OPT_TO, OPT_FROM, OPT_SUBJECT, OPT_SIGNER, OPT_RECIP,
  80     OPT_CERTSOUT, OPT_MD, OPT_INKEY, OPT_KEYFORM, OPT_KEYOPT, OPT_RR_FROM,
  81     OPT_RR_TO, OPT_AES128_WRAP, OPT_AES192_WRAP, OPT_AES256_WRAP,
  82     OPT_3DES_WRAP, OPT_ENGINE,
  83     OPT_R_ENUM,
  84     OPT_V_ENUM,
  85     OPT_CIPHER
  86 } OPTION_CHOICE;
  87
  88 const OPTIONS cms_options[] = {
  89     {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
  90     {OPT_HELP_STR, 1, '-',
  91         "  cert.pem... recipient certs for encryption\n"},
  92     {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
  93     {"help", OPT_HELP, '-', "Display this summary"},
  94     {"inform", OPT_INFORM, 'c', "Input format SMIME (default), PEM or DER"},
  95     {"outform", OPT_OUTFORM, 'c',
  96      "Output format SMIME (default), PEM or DER"},
  97     {"in", OPT_IN, '<', "Input file"},
  98     {"out", OPT_OUT, '>', "Output file"},
  99     {"encrypt", OPT_ENCRYPT, '-', "Encrypt message"},
 100     {"decrypt", OPT_DECRYPT, '-', "Decrypt encrypted message"},
 101     {"sign", OPT_SIGN, '-', "Sign message"},
 102     {"sign_receipt", OPT_SIGN_RECEIPT, '-', "Generate a signed receipt for the message"},
 103     {"resign", OPT_RESIGN, '-', "Resign a signed message"},
 104     {"verify", OPT_VERIFY, '-', "Verify signed message"},
 105     {"verify_retcode", OPT_VERIFY_RETCODE, '-'},
 106     {"verify_receipt", OPT_VERIFY_RECEIPT, '<'},
 107     {"cmsout", OPT_CMSOUT, '-', "Output CMS structure"},
 108     {"data_out", OPT_DATA_OUT, '-'},
 109     {"data_create", OPT_DATA_CREATE, '-'},
 110     {"digest_verify", OPT_DIGEST_VERIFY, '-'},
 111     {"digest_create", OPT_DIGEST_CREATE, '-'},
 112     {"compress", OPT_COMPRESS, '-'},
 113     {"uncompress", OPT_UNCOMPRESS, '-'},
 114     {"EncryptedData_decrypt", OPT_ED_DECRYPT, '-'},
 115     {"EncryptedData_encrypt", OPT_ED_ENCRYPT, '-'},
 116     {"debug_decrypt", OPT_DEBUG_DECRYPT, '-'},
 117     {"text", OPT_TEXT, '-', "Include or delete text MIME headers"},
 118     {"asciicrlf", OPT_ASCIICRLF, '-'},
 119     {"nointern", OPT_NOINTERN, '-',
 120      "Don't search certificates in message for signer"},
 121     {"noverify", OPT_NOVERIFY, '-', "Don't verify signers certificate"},
 122     {"nocerts", OPT_NOCERTS, '-',
 123      "Don't include signers certificate when signing"},
 124     {"noattr", OPT_NOATTR, '-', "Don't include any signed attributes"},
 125     {"nodetach", OPT_NODETACH, '-', "Use opaque signing"},
 126     {"nosmimecap", OPT_NOSMIMECAP, '-', "Omit the SMIMECapabilities attribute"},
 127     {"binary", OPT_BINARY, '-', "Don't translate message to text"},
 128     {"keyid", OPT_KEYID, '-', "Use subject key identifier"},
 129     {"nosigs", OPT_NOSIGS, '-', "Don't verify message signature"},
 130     {"no_content_verify", OPT_NO_CONTENT_VERIFY, '-'},
 131     {"no_attr_verify", OPT_NO_ATTR_VERIFY, '-'},
 132     {"stream", OPT_INDEF, '-', "Enable CMS streaming"},
 133     {"indef", OPT_INDEF, '-', "Same as -stream"},
 134     {"noindef", OPT_NOINDEF, '-', "Disable CMS streaming"},
 135     {"crlfeol", OPT_CRLFEOL, '-', "Use CRLF as EOL termination instead of CR only" },
 136     {"noout", OPT_NOOUT, '-', "For the -cmsout operation do not output the parsed CMS structure"},
 137     {"receipt_request_print", OPT_RR_PRINT, '-', "Print CMS Receipt Request" },
 138     {"receipt_request_all", OPT_RR_ALL, '-'},
 139     {"receipt_request_first", OPT_RR_FIRST, '-'},
 140     {"rctform", OPT_RCTFORM, 'F', "Receipt file format"},
 141     {"certfile", OPT_CERTFILE, '<', "Other certificates file"},
 142     {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
 143     {"CApath", OPT_CAPATH, '/', "trusted certificates directory"},
 144     {"no-CAfile", OPT_NOCAFILE, '-',
 145      "Do not load the default certificates file"},
 146     {"no-CApath", OPT_NOCAPATH, '-',
 147      "Do not load certificates from the default certificates directory"},
 148     {"content", OPT_CONTENT, '<',
 149      "Supply or override content for detached signature"},
 150     {"print", OPT_PRINT, '-',
 151      "For the -cmsout operation print out all fields of the CMS structure"},
 152     {"secretkey", OPT_SECRETKEY, 's'},
 153     {"secretkeyid", OPT_SECRETKEYID, 's'},
 154     {"pwri_password", OPT_PWRI_PASSWORD, 's'},
 155     {"econtent_type", OPT_ECONTENT_TYPE, 's'},
 156     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
 157     {"to", OPT_TO, 's', "To address"},
 158     {"from", OPT_FROM, 's', "From address"},
 159     {"subject", OPT_SUBJECT, 's', "Subject"},
 160     {"signer", OPT_SIGNER, 's', "Signer certificate file"},
 161     {"recip", OPT_RECIP, '<', "Recipient cert file for decryption"},
 162     {"certsout", OPT_CERTSOUT, '>', "Certificate output file"},
 163     {"md", OPT_MD, 's', "Digest algorithm to use when signing or resigning"},
 164     {"inkey", OPT_INKEY, 's',
 165      "Input private key (if not signer or recipient)"},
 166     {"keyform", OPT_KEYFORM, 'f', "Input private key format (PEM or ENGINE)"},
 167     {"keyopt", OPT_KEYOPT, 's', "Set public key parameters as n:v pairs"},
 168     {"receipt_request_from", OPT_RR_FROM, 's'},
 169     {"receipt_request_to", OPT_RR_TO, 's'},
 170     {"", OPT_CIPHER, '-', "Any supported cipher"},
 171     OPT_R_OPTIONS,
 172     OPT_V_OPTIONS,
 173     {"aes128-wrap", OPT_AES128_WRAP, '-', "Use AES128 to wrap key"},
 174     {"aes192-wrap", OPT_AES192_WRAP, '-', "Use AES192 to wrap key"},
 175     {"aes256-wrap", OPT_AES256_WRAP, '-', "Use AES256 to wrap key"},
 176 # ifndef OPENSSL_NO_DES
 177     {"des3-wrap", OPT_3DES_WRAP, '-', "Use 3DES-EDE to wrap key"},
 178 # endif
 179 # ifndef OPENSSL_NO_ENGINE
 180     {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
 181 # endif
 182     {NULL}
 183 };
 184
 185 int cms_main(int argc, char **argv)
 186 {
 187     ASN1_OBJECT *econtent_type = NULL;
 188     BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;
 189     CMS_ContentInfo *cms = NULL, *rcms = NULL;
 190     CMS_ReceiptRequest *rr = NULL;
 191     ENGINE *e = NULL;
 192     EVP_PKEY *key = NULL;
 193     const EVP_CIPHER *cipher = NULL, *wrap_cipher = NULL;
 194     const EVP_MD *sign_md = NULL;
 195     STACK_OF(OPENSSL_STRING) *rr_to = NULL, *rr_from = NULL;
 196     STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
 197     STACK_OF(X509) *encerts = NULL, *other = NULL;
 198     X509 *cert = NULL, *recip = NULL, *signer = NULL;
 199     X509_STORE *store = NULL;
 200     X509_VERIFY_PARAM *vpm = NULL;
 201     char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
 202     const char *CAfile = NULL, *CApath = NULL;
 203     char *certsoutfile = NULL;
 204     int noCAfile = 0, noCApath = 0;
 205     char *infile = NULL, *outfile = NULL, *rctfile = NULL;
 206     char *passinarg = NULL, *passin = NULL, *signerfile = NULL, *recipfile = NULL;
 207     char *to = NULL, *from = NULL, *subject = NULL, *prog;
 208     cms_key_param *key_first = NULL, *key_param = NULL;
 209     int flags = CMS_DETACHED, noout = 0, print = 0, keyidx = -1, vpmtouched = 0;
 210     int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
 211     int operation = 0, ret = 1, rr_print = 0, rr_allorfirst = -1;
 212     int verify_retcode = 0, rctformat = FORMAT_SMIME, keyform = FORMAT_PEM;
 213     size_t secret_keylen = 0, secret_keyidlen = 0;
 214     unsigned char *pwri_pass = NULL, *pwri_tmp = NULL;
 215     unsigned char *secret_key = NULL, *secret_keyid = NULL;
 216     long ltmp;
 217     const char *mime_eol = "\n";
 218     OPTION_CHOICE o;
 219
 220     if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
 221         return 1;
 222
 223     prog = opt_init(argc, argv, cms_options);
 224     while ((o = opt_next()) != OPT_EOF) {
 225         switch (o) {
 226         case OPT_EOF:
 227         case OPT_ERR:
 228  opthelp:
 229             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 230             goto end;
 231         case OPT_HELP:
 232             opt_help(cms_options);
 233             ret = 0;
 234             goto end;
 235         case OPT_INFORM:
 236             if (!opt_format(opt_arg(), OPT_FMT_PDS, &informat))
 237                 goto opthelp;
 238             break;
 239         case OPT_OUTFORM:
 240             if (!opt_format(opt_arg(), OPT_FMT_PDS, &outformat))
 241                 goto opthelp;
 242             break;
 243         case OPT_OUT:
 244             outfile = opt_arg();
 245             break;
 246         case OPT_ENCRYPT:
 247             operation = SMIME_ENCRYPT;
 248             break;
 249         case OPT_DECRYPT:
 250             operation = SMIME_DECRYPT;
 251             break;
 252         case OPT_SIGN:
 253             operation = SMIME_SIGN;
 254             break;
 255         case OPT_SIGN_RECEIPT:
 256             operation = SMIME_SIGN_RECEIPT;
 257             break;
 258         case OPT_RESIGN:
 259             operation = SMIME_RESIGN;
 260             break;
 261         case OPT_VERIFY:
 262             operation = SMIME_VERIFY;
 263             break;
 264         case OPT_VERIFY_RETCODE:
 265             verify_retcode = 1;
 266             break;
 267         case OPT_VERIFY_RECEIPT:
 268             operation = SMIME_VERIFY_RECEIPT;
 269             rctfile = opt_arg();
 270             break;
 271         case OPT_CMSOUT:
 272             operation = SMIME_CMSOUT;
 273             break;
 274         case OPT_DATA_OUT:
 275             operation = SMIME_DATAOUT;
 276             break;
 277         case OPT_DATA_CREATE:
 278             operation = SMIME_DATA_CREATE;
 279             break;
 280         case OPT_DIGEST_VERIFY:
 281             operation = SMIME_DIGEST_VERIFY;
 282             break;
 283         case OPT_DIGEST_CREATE:
 284             operation = SMIME_DIGEST_CREATE;
 285             break;
 286         case OPT_COMPRESS:
 287             operation = SMIME_COMPRESS;
 288             break;
 289         case OPT_UNCOMPRESS:
 290             operation = SMIME_UNCOMPRESS;
 291             break;
 292         case OPT_ED_DECRYPT:
 293             operation = SMIME_ENCRYPTED_DECRYPT;
 294             break;
 295         case OPT_ED_ENCRYPT:
 296             operation = SMIME_ENCRYPTED_ENCRYPT;
 297             break;
 298         case OPT_DEBUG_DECRYPT:
 299             flags |= CMS_DEBUG_DECRYPT;
 300             break;
 301         case OPT_TEXT:
 302             flags |= CMS_TEXT;
 303             break;
 304         case OPT_ASCIICRLF:
 305             flags |= CMS_ASCIICRLF;
 306             break;
 307         case OPT_NOINTERN:
 308             flags |= CMS_NOINTERN;
 309             break;
 310         case OPT_NOVERIFY:
 311             flags |= CMS_NO_SIGNER_CERT_VERIFY;
 312             break;
 313         case OPT_NOCERTS:
 314             flags |= CMS_NOCERTS;
 315             break;
 316         case OPT_NOATTR:
 317             flags |= CMS_NOATTR;
 318             break;
 319         case OPT_NODETACH:
 320             flags &= ~CMS_DETACHED;
 321             break;
 322         case OPT_NOSMIMECAP:
 323             flags |= CMS_NOSMIMECAP;
 324             break;
 325         case OPT_BINARY:
 326             flags |= CMS_BINARY;
 327             break;
 328         case OPT_KEYID:
 329             flags |= CMS_USE_KEYID;
 330             break;
 331         case OPT_NOSIGS:
 332             flags |= CMS_NOSIGS;
 333             break;
 334         case OPT_NO_CONTENT_VERIFY:
 335             flags |= CMS_NO_CONTENT_VERIFY;
 336             break;
 337         case OPT_NO_ATTR_VERIFY:
 338             flags |= CMS_NO_ATTR_VERIFY;
 339             break;
 340         case OPT_INDEF:
 341             flags |= CMS_STREAM;
 342             break;
 343         case OPT_NOINDEF:
 344             flags &= ~CMS_STREAM;
 345             break;
 346         case OPT_CRLFEOL:
 347             mime_eol = "\r\n";
 348             flags |= CMS_CRLFEOL;
 349             break;
 350         case OPT_NOOUT:
 351             noout = 1;
 352             break;
 353         case OPT_RR_PRINT:
 354             rr_print = 1;
 355             break;
 356         case OPT_RR_ALL:
 357             rr_allorfirst = 0;
 358             break;
 359         case OPT_RR_FIRST:
 360             rr_allorfirst = 1;
 361             break;
 362         case OPT_RCTFORM:
 363             if (rctformat == FORMAT_SMIME)
 364                 rcms = SMIME_read_CMS(rctin, NULL);
 365             else if (rctformat == FORMAT_PEM)
 366                 rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
 367             else if (rctformat == FORMAT_ASN1)
 368                 if (!opt_format(opt_arg(),
 369                                 OPT_FMT_PEMDER | OPT_FMT_SMIME, &rctformat))
 370                     goto opthelp;
 371             break;
 372         case OPT_CERTFILE:
 373             certfile = opt_arg();
 374             break;
 375         case OPT_CAFILE:
 376             CAfile = opt_arg();
 377             break;
 378         case OPT_CAPATH:
 379             CApath = opt_arg();
 380             break;
 381         case OPT_NOCAFILE:
 382             noCAfile = 1;
 383             break;
 384         case OPT_NOCAPATH:
 385             noCApath = 1;
 386             break;
 387         case OPT_IN:
 388             infile = opt_arg();
 389             break;
 390         case OPT_CONTENT:
 391             contfile = opt_arg();
 392             break;
 393         case OPT_RR_FROM:
 394             if (rr_from == NULL
 395                 && (rr_from = sk_OPENSSL_STRING_new_null()) == NULL)
 396                 goto end;
 397             sk_OPENSSL_STRING_push(rr_from, opt_arg());
 398             break;
 399         case OPT_RR_TO:
 400             if (rr_to == NULL
 401                 && (rr_to = sk_OPENSSL_STRING_new_null()) == NULL)
 402                 goto end;
 403             sk_OPENSSL_STRING_push(rr_to, opt_arg());
 404             break;
 405         case OPT_PRINT:
 406             noout = print = 1;
 407             break;
 408         case OPT_SECRETKEY:
 409             if (secret_key != NULL) {
 410                 BIO_printf(bio_err, "Invalid key (supplied twice) %s\n",
 411                            opt_arg());
 412                 goto opthelp;
 413             }
 414             secret_key = OPENSSL_hexstr2buf(opt_arg(), &ltmp);
 415             if (secret_key == NULL) {
 416                 BIO_printf(bio_err, "Invalid key %s\n", opt_arg());
 417                 goto end;
 418             }
 419             secret_keylen = (size_t)ltmp;
 420             break;
 421         case OPT_SECRETKEYID:
 422             if (secret_keyid != NULL) {
 423                 BIO_printf(bio_err, "Invalid id (supplied twice) %s\n",
 424                            opt_arg());
 425                 goto opthelp;
 426             }
 427             secret_keyid = OPENSSL_hexstr2buf(opt_arg(), &ltmp);
 428             if (secret_keyid == NULL) {
 429                 BIO_printf(bio_err, "Invalid id %s\n", opt_arg());
 430                 goto opthelp;
 431             }
 432             secret_keyidlen = (size_t)ltmp;
 433             break;
 434         case OPT_PWRI_PASSWORD:
 435             pwri_pass = (unsigned char *)opt_arg();
 436             break;
 437         case OPT_ECONTENT_TYPE:
 438             if (econtent_type != NULL) {
 439                 BIO_printf(bio_err, "Invalid OID (supplied twice) %s\n",
 440                            opt_arg());
 441                 goto opthelp;
 442             }
 443             econtent_type = OBJ_txt2obj(opt_arg(), 0);
 444             if (econtent_type == NULL) {
 445                 BIO_printf(bio_err, "Invalid OID %s\n", opt_arg());
 446                 goto opthelp;
 447             }
 448             break;
 449         case OPT_ENGINE:
 450             e = setup_engine(opt_arg(), 0);
 451             break;
 452         case OPT_PASSIN:
 453             passinarg = opt_arg();
 454             break;
 455         case OPT_TO:
 456             to = opt_arg();
 457             break;
 458         case OPT_FROM:
 459             from = opt_arg();
 460             break;
 461         case OPT_SUBJECT:
 462             subject = opt_arg();
 463             break;
 464         case OPT_CERTSOUT:
 465             certsoutfile = opt_arg();
 466             break;
 467         case OPT_MD:
 468             if (!opt_md(opt_arg(), &sign_md))
 469                 goto end;
 470             break;
 471         case OPT_SIGNER:
 472             /* If previous -signer argument add signer to list */
 473             if (signerfile != NULL) {
 474                 if (sksigners == NULL
 475                     && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
 476                     goto end;
 477                 sk_OPENSSL_STRING_push(sksigners, signerfile);
 478                 if (keyfile == NULL)
 479                     keyfile = signerfile;
 480                 if (skkeys == NULL
 481                     && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
 482                     goto end;
 483                 sk_OPENSSL_STRING_push(skkeys, keyfile);
 484                 keyfile = NULL;
 485             }
 486             signerfile = opt_arg();
 487             break;
 488         case OPT_INKEY:
 489             /* If previous -inkey argument add signer to list */
 490             if (keyfile != NULL) {
 491                 if (signerfile == NULL) {
 492                     BIO_puts(bio_err, "Illegal -inkey without -signer\n");
 493                     goto end;
 494                 }
 495                 if (sksigners == NULL
 496                     && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
 497                     goto end;
 498                 sk_OPENSSL_STRING_push(sksigners, signerfile);
 499                 signerfile = NULL;
 500                 if (skkeys == NULL
 501                     && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
 502                     goto end;
 503                 sk_OPENSSL_STRING_push(skkeys, keyfile);
 504             }
 505             keyfile = opt_arg();
 506             break;
 507         case OPT_KEYFORM:
 508             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 509                 goto opthelp;
 510             break;
 511         case OPT_RECIP:
 512             if (operation == SMIME_ENCRYPT) {
 513                 if (encerts == NULL && (encerts = sk_X509_new_null()) == NULL)
 514                     goto end;
 515                 cert = load_cert(opt_arg(), FORMAT_PEM,
 516                                  "recipient certificate file");
 517                 if (cert == NULL)
 518                     goto end;
 519                 sk_X509_push(encerts, cert);
 520                 cert = NULL;
 521             } else {
 522                 recipfile = opt_arg();
 523             }
 524             break;
 525         case OPT_CIPHER:
 526             if (!opt_cipher(opt_unknown(), &cipher))
 527                 goto end;
 528             break;
 529         case OPT_KEYOPT:
 530             keyidx = -1;
 531             if (operation == SMIME_ENCRYPT) {
 532                 if (encerts != NULL)
 533                     keyidx += sk_X509_num(encerts);
 534             } else {
 535                 if (keyfile != NULL || signerfile != NULL)
 536                     keyidx++;
 537                 if (skkeys != NULL)
 538                     keyidx += sk_OPENSSL_STRING_num(skkeys);
 539             }
 540             if (keyidx < 0) {
 541                 BIO_printf(bio_err, "No key specified\n");
 542                 goto opthelp;
 543             }
 544             if (key_param == NULL || key_param->idx != keyidx) {
 545                 cms_key_param *nparam;
 546                 nparam = app_malloc(sizeof(*nparam), "key param buffer");
 547                 nparam->idx = keyidx;
 548                 if ((nparam->param = sk_OPENSSL_STRING_new_null()) == NULL)
 549                     goto end;
 550                 nparam->next = NULL;
 551                 if (key_first == NULL)
 552                     key_first = nparam;
 553                 else
 554                     key_param->next = nparam;
 555                 key_param = nparam;
 556             }
 557             sk_OPENSSL_STRING_push(key_param->param, opt_arg());
 558             break;
 559         case OPT_V_CASES:
 560             if (!opt_verify(o, vpm))
 561                 goto end;
 562             vpmtouched++;
 563             break;
 564         case OPT_R_CASES:
 565             if (!opt_rand(o))
 566                 goto end;
 567             break;
 568         case OPT_3DES_WRAP:
 569 # ifndef OPENSSL_NO_DES
 570             wrap_cipher = EVP_des_ede3_wrap();
 571 # endif
 572             break;
 573         case OPT_AES128_WRAP:
 574             wrap_cipher = EVP_aes_128_wrap();
 575             break;
 576         case OPT_AES192_WRAP:
 577             wrap_cipher = EVP_aes_192_wrap();
 578             break;
 579         case OPT_AES256_WRAP:
 580             wrap_cipher = EVP_aes_256_wrap();
 581             break;
 582         }
 583     }
 584     argc = opt_num_rest();
 585     argv = opt_rest();
 586
 587     if ((rr_allorfirst != -1 || rr_from != NULL) && rr_to == NULL) {
 588         BIO_puts(bio_err, "No Signed Receipts Recipients\n");
 589         goto opthelp;
 590     }
 591
 592     if (!(operation & SMIME_SIGNERS) && (rr_to != NULL || rr_from != NULL)) {
 593         BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
 594         goto opthelp;
 595     }
 596     if (!(operation & SMIME_SIGNERS) && (skkeys != NULL || sksigners != NULL)) {
 597         BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
 598         goto opthelp;
 599     }
 600
 601     if (operation & SMIME_SIGNERS) {
 602         if (keyfile != NULL && signerfile == NULL) {
 603             BIO_puts(bio_err, "Illegal -inkey without -signer\n");
 604             goto opthelp;
 605         }
 606         /* Check to see if any final signer needs to be appended */
 607         if (signerfile != NULL) {
 608             if (sksigners == NULL
 609                 && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
 610                 goto end;
 611             sk_OPENSSL_STRING_push(sksigners, signerfile);
 612             if (skkeys == NULL && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
 613                 goto end;
 614             if (keyfile == NULL)
 615                 keyfile = signerfile;
 616             sk_OPENSSL_STRING_push(skkeys, keyfile);
 617         }
 618         if (sksigners == NULL) {
 619             BIO_printf(bio_err, "No signer certificate specified\n");
 620             goto opthelp;
 621         }
 622         signerfile = NULL;
 623         keyfile = NULL;
 624     } else if (operation == SMIME_DECRYPT) {
 625         if (recipfile == NULL && keyfile == NULL
 626             && secret_key == NULL && pwri_pass == NULL) {
 627             BIO_printf(bio_err,
 628                        "No recipient certificate or key specified\n");
 629             goto opthelp;
 630         }
 631     } else if (operation == SMIME_ENCRYPT) {
 632         if (*argv == NULL && secret_key == NULL
 633             && pwri_pass == NULL && encerts == NULL) {
 634             BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
 635             goto opthelp;
 636         }
 637     } else if (!operation) {
 638         goto opthelp;
 639     }
 640
 641     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 642         BIO_printf(bio_err, "Error getting password\n");
 643         goto end;
 644     }
 645
 646     ret = 2;
 647
 648     if (!(operation & SMIME_SIGNERS))
 649         flags &= ~CMS_DETACHED;
 650
 651     if (!(operation & SMIME_OP))
 652         if (flags & CMS_BINARY)
 653             outformat = FORMAT_BINARY;
 654
 655     if (!(operation & SMIME_IP))
 656         if (flags & CMS_BINARY)
 657             informat = FORMAT_BINARY;
 658
 659     if (operation == SMIME_ENCRYPT) {
 660         if (!cipher) {
 661 # ifndef OPENSSL_NO_DES
 662             cipher = EVP_des_ede3_cbc();
 663 # else
 664             BIO_printf(bio_err, "No cipher selected\n");
 665             goto end;
 666 # endif
 667         }
 668
 669         if (secret_key && !secret_keyid) {
 670             BIO_printf(bio_err, "No secret key id\n");
 671             goto end;
 672         }
 673
 674         if (*argv && encerts == NULL)
 675             if ((encerts = sk_X509_new_null()) == NULL)
 676                 goto end;
 677         while (*argv) {
 678             if ((cert = load_cert(*argv, FORMAT_PEM,
 679                                   "recipient certificate file")) == NULL)
 680                 goto end;
 681             sk_X509_push(encerts, cert);
 682             cert = NULL;
 683             argv++;
 684         }
 685     }
 686
 687     if (certfile != NULL) {
 688         if (!load_certs(certfile, &other, FORMAT_PEM, NULL,
 689                         "certificate file")) {
 690             ERR_print_errors(bio_err);
 691             goto end;
 692         }
 693     }
 694
 695     if (recipfile != NULL && (operation == SMIME_DECRYPT)) {
 696         if ((recip = load_cert(recipfile, FORMAT_PEM,
 697                                "recipient certificate file")) == NULL) {
 698             ERR_print_errors(bio_err);
 699             goto end;
 700         }
 701     }
 702
 703     if (operation == SMIME_SIGN_RECEIPT) {
 704         if ((signer = load_cert(signerfile, FORMAT_PEM,
 705                                 "receipt signer certificate file")) == NULL) {
 706             ERR_print_errors(bio_err);
 707             goto end;
 708         }
 709     }
 710
 711     if (operation == SMIME_DECRYPT) {
 712         if (keyfile == NULL)
 713             keyfile = recipfile;
 714     } else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT)) {
 715         if (keyfile == NULL)
 716             keyfile = signerfile;
 717     } else {
 718         keyfile = NULL;
 719     }
 720
 721     if (keyfile != NULL) {
 722         key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
 723         if (key == NULL)
 724             goto end;
 725     }
 726
 727     in = bio_open_default(infile, 'r', informat);
 728     if (in == NULL)
 729         goto end;
 730
 731     if (operation & SMIME_IP) {
 732         if (informat == FORMAT_SMIME) {
 733             cms = SMIME_read_CMS(in, &indata);
 734         } else if (informat == FORMAT_PEM) {
 735             cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
 736         } else if (informat == FORMAT_ASN1) {
 737             cms = d2i_CMS_bio(in, NULL);
 738         } else {
 739             BIO_printf(bio_err, "Bad input format for CMS file\n");
 740             goto end;
 741         }
 742
 743         if (cms == NULL) {
 744             BIO_printf(bio_err, "Error reading S/MIME message\n");
 745             goto end;
 746         }
 747         if (contfile != NULL) {
 748             BIO_free(indata);
 749             if ((indata = BIO_new_file(contfile, "rb")) == NULL) {
 750                 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
 751                 goto end;
 752             }
 753         }
 754         if (certsoutfile != NULL) {
 755             STACK_OF(X509) *allcerts;
 756             allcerts = CMS_get1_certs(cms);
 757             if (!save_certs(certsoutfile, allcerts)) {
 758                 BIO_printf(bio_err,
 759                            "Error writing certs to %s\n", certsoutfile);
 760                 ret = 5;
 761                 goto end;
 762             }
 763             sk_X509_pop_free(allcerts, X509_free);
 764         }
 765     }
 766
 767     if (rctfile != NULL) {
 768         char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r";
 769         if ((rctin = BIO_new_file(rctfile, rctmode)) == NULL) {
 770             BIO_printf(bio_err, "Can't open receipt file %s\n", rctfile);
 771             goto end;
 772         }
 773
 774         if (rctformat == FORMAT_SMIME) {
 775             rcms = SMIME_read_CMS(rctin, NULL);
 776         } else if (rctformat == FORMAT_PEM) {
 777             rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
 778         } else if (rctformat == FORMAT_ASN1) {
 779             rcms = d2i_CMS_bio(rctin, NULL);
 780         } else {
 781             BIO_printf(bio_err, "Bad input format for receipt\n");
 782             goto end;
 783         }
 784
 785         if (rcms == NULL) {
 786             BIO_printf(bio_err, "Error reading receipt\n");
 787             goto end;
 788         }
 789     }
 790
 791     out = bio_open_default(outfile, 'w', outformat);
 792     if (out == NULL)
 793         goto end;
 794
 795     if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT)) {
 796         if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
 797             goto end;
 798         X509_STORE_set_verify_cb(store, cms_cb);
 799         if (vpmtouched)
 800             X509_STORE_set1_param(store, vpm);
 801     }
 802
 803     ret = 3;
 804
 805     if (operation == SMIME_DATA_CREATE) {
 806         cms = CMS_data_create(in, flags);
 807     } else if (operation == SMIME_DIGEST_CREATE) {
 808         cms = CMS_digest_create(in, sign_md, flags);
 809     } else if (operation == SMIME_COMPRESS) {
 810         cms = CMS_compress(in, -1, flags);
 811     } else if (operation == SMIME_ENCRYPT) {
 812         int i;
 813         flags |= CMS_PARTIAL;
 814         cms = CMS_encrypt(NULL, in, cipher, flags);
 815         if (cms == NULL)
 816             goto end;
 817         for (i = 0; i < sk_X509_num(encerts); i++) {
 818             CMS_RecipientInfo *ri;
 819             cms_key_param *kparam;
 820             int tflags = flags;
 821             X509 *x = sk_X509_value(encerts, i);
 822             for (kparam = key_first; kparam; kparam = kparam->next) {
 823                 if (kparam->idx == i) {
 824                     tflags |= CMS_KEY_PARAM;
 825                     break;
 826                 }
 827             }
 828             ri = CMS_add1_recipient_cert(cms, x, tflags);
 829             if (ri == NULL)
 830                 goto end;
 831             if (kparam != NULL) {
 832                 EVP_PKEY_CTX *pctx;
 833                 pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
 834                 if (!cms_set_pkey_param(pctx, kparam->param))
 835                     goto end;
 836             }
 837             if (CMS_RecipientInfo_type(ri) == CMS_RECIPINFO_AGREE
 838                 && wrap_cipher) {
 839                 EVP_CIPHER_CTX *wctx;
 840                 wctx = CMS_RecipientInfo_kari_get0_ctx(ri);
 841                 EVP_EncryptInit_ex(wctx, wrap_cipher, NULL, NULL, NULL);
 842             }
 843         }
 844
 845         if (secret_key != NULL) {
 846             if (!CMS_add0_recipient_key(cms, NID_undef,
 847                                         secret_key, secret_keylen,
 848                                         secret_keyid, secret_keyidlen,
 849                                         NULL, NULL, NULL))
 850                 goto end;
 851             /* NULL these because call absorbs them */
 852             secret_key = NULL;
 853             secret_keyid = NULL;
 854         }
 855         if (pwri_pass != NULL) {
 856             pwri_tmp = (unsigned char *)OPENSSL_strdup((char *)pwri_pass);
 857             if (pwri_tmp == NULL)
 858                 goto end;
 859             if (CMS_add0_recipient_password(cms,
 860                                             -1, NID_undef, NID_undef,
 861                                             pwri_tmp, -1, NULL) == NULL)
 862                 goto end;
 863             pwri_tmp = NULL;
 864         }
 865         if (!(flags & CMS_STREAM)) {
 866             if (!CMS_final(cms, in, NULL, flags))
 867                 goto end;
 868         }
 869     } else if (operation == SMIME_ENCRYPTED_ENCRYPT) {
 870         cms = CMS_EncryptedData_encrypt(in, cipher,
 871                                         secret_key, secret_keylen, flags);
 872
 873     } else if (operation == SMIME_SIGN_RECEIPT) {
 874         CMS_ContentInfo *srcms = NULL;
 875         STACK_OF(CMS_SignerInfo) *sis;
 876         CMS_SignerInfo *si;
 877         sis = CMS_get0_SignerInfos(cms);
 878         if (sis == NULL)
 879             goto end;
 880         si = sk_CMS_SignerInfo_value(sis, 0);
 881         srcms = CMS_sign_receipt(si, signer, key, other, flags);
 882         if (srcms == NULL)
 883             goto end;
 884         CMS_ContentInfo_free(cms);
 885         cms = srcms;
 886     } else if (operation & SMIME_SIGNERS) {
 887         int i;
 888         /*
 889          * If detached data content we enable streaming if S/MIME output
 890          * format.
 891          */
 892         if (operation == SMIME_SIGN) {
 893
 894             if (flags & CMS_DETACHED) {
 895                 if (outformat == FORMAT_SMIME)
 896                     flags |= CMS_STREAM;
 897             }
 898             flags |= CMS_PARTIAL;
 899             cms = CMS_sign(NULL, NULL, other, in, flags);
 900             if (cms == NULL)
 901                 goto end;
 902             if (econtent_type != NULL)
 903                 CMS_set1_eContentType(cms, econtent_type);
 904
 905             if (rr_to != NULL) {
 906                 rr = make_receipt_request(rr_to, rr_allorfirst, rr_from);
 907                 if (rr == NULL) {
 908                     BIO_puts(bio_err,
 909                              "Signed Receipt Request Creation Error\n");
 910                     goto end;
 911                 }
 912             }
 913         } else {
 914             flags |= CMS_REUSE_DIGEST;
 915         }
 916         for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
 917             CMS_SignerInfo *si;
 918             cms_key_param *kparam;
 919             int tflags = flags;
 920             signerfile = sk_OPENSSL_STRING_value(sksigners, i);
 921             keyfile = sk_OPENSSL_STRING_value(skkeys, i);
 922
 923             signer = load_cert(signerfile, FORMAT_PEM, "signer certificate");
 924             if (signer == NULL) {
 925                 ret = 2;
 926                 goto end;
 927             }
 928             key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
 929             if (key == NULL) {
 930                 ret = 2;
 931                 goto end;
 932             }
 933             for (kparam = key_first; kparam; kparam = kparam->next) {
 934                 if (kparam->idx == i) {
 935                     tflags |= CMS_KEY_PARAM;
 936                     break;
 937                 }
 938             }
 939             si = CMS_add1_signer(cms, signer, key, sign_md, tflags);
 940             if (si == NULL)
 941                 goto end;
 942             if (kparam != NULL) {
 943                 EVP_PKEY_CTX *pctx;
 944                 pctx = CMS_SignerInfo_get0_pkey_ctx(si);
 945                 if (!cms_set_pkey_param(pctx, kparam->param))
 946                     goto end;
 947             }
 948             if (rr != NULL && !CMS_add1_ReceiptRequest(si, rr))
 949                 goto end;
 950             X509_free(signer);
 951             signer = NULL;
 952             EVP_PKEY_free(key);
 953             key = NULL;
 954         }
 955         /* If not streaming or resigning finalize structure */
 956         if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM)) {
 957             if (!CMS_final(cms, in, NULL, flags))
 958                 goto end;
 959         }
 960     }
 961
 962     if (cms == NULL) {
 963         BIO_printf(bio_err, "Error creating CMS structure\n");
 964         goto end;
 965     }
 966
 967     ret = 4;
 968     if (operation == SMIME_DECRYPT) {
 969         if (flags & CMS_DEBUG_DECRYPT)
 970             CMS_decrypt(cms, NULL, NULL, NULL, NULL, flags);
 971
 972         if (secret_key != NULL) {
 973             if (!CMS_decrypt_set1_key(cms,
 974                                       secret_key, secret_keylen,
 975                                       secret_keyid, secret_keyidlen)) {
 976                 BIO_puts(bio_err, "Error decrypting CMS using secret key\n");
 977                 goto end;
 978             }
 979         }
 980
 981         if (key != NULL) {
 982             if (!CMS_decrypt_set1_pkey(cms, key, recip)) {
 983                 BIO_puts(bio_err, "Error decrypting CMS using private key\n");
 984                 goto end;
 985             }
 986         }
 987
 988         if (pwri_pass != NULL) {
 989             if (!CMS_decrypt_set1_password(cms, pwri_pass, -1)) {
 990                 BIO_puts(bio_err, "Error decrypting CMS using password\n");
 991                 goto end;
 992             }
 993         }
 994
 995         if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags)) {
 996             BIO_printf(bio_err, "Error decrypting CMS structure\n");
 997             goto end;
 998         }
 999     } else if (operation == SMIME_DATAOUT) {
1000         if (!CMS_data(cms, out, flags))
1001             goto end;
1002     } else if (operation == SMIME_UNCOMPRESS) {
1003         if (!CMS_uncompress(cms, indata, out, flags))
1004             goto end;
1005     } else if (operation == SMIME_DIGEST_VERIFY) {
1006         if (CMS_digest_verify(cms, indata, out, flags) > 0) {
1007             BIO_printf(bio_err, "Verification successful\n");
1008         } else {
1009             BIO_printf(bio_err, "Verification failure\n");
1010             goto end;
1011         }
1012     } else if (operation == SMIME_ENCRYPTED_DECRYPT) {
1013         if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen,
1014                                        indata, out, flags))
1015             goto end;
1016     } else if (operation == SMIME_VERIFY) {
1017         if (CMS_verify(cms, other, store, indata, out, flags) > 0) {
1018             BIO_printf(bio_err, "Verification successful\n");
1019         } else {
1020             BIO_printf(bio_err, "Verification failure\n");
1021             if (verify_retcode)
1022                 ret = verify_err + 32;
1023             goto end;
1024         }
1025         if (signerfile != NULL) {
1026             STACK_OF(X509) *signers;
1027             signers = CMS_get0_signers(cms);
1028             if (!save_certs(signerfile, signers)) {
1029                 BIO_printf(bio_err,
1030                            "Error writing signers to %s\n", signerfile);
1031                 ret = 5;
1032                 goto end;
1033             }
1034             sk_X509_free(signers);
1035         }
1036         if (rr_print)
1037             receipt_request_print(cms);
1038
1039     } else if (operation == SMIME_VERIFY_RECEIPT) {
1040         if (CMS_verify_receipt(rcms, cms, other, store, flags) > 0) {
1041             BIO_printf(bio_err, "Verification successful\n");
1042         } else {
1043             BIO_printf(bio_err, "Verification failure\n");
1044             goto end;
1045         }
1046     } else {
1047         if (noout) {
1048             if (print)
1049                 CMS_ContentInfo_print_ctx(out, cms, 0, NULL);
1050         } else if (outformat == FORMAT_SMIME) {
1051             if (to)
1052                 BIO_printf(out, "To: %s%s", to, mime_eol);
1053             if (from)
1054                 BIO_printf(out, "From: %s%s", from, mime_eol);
1055             if (subject)
1056                 BIO_printf(out, "Subject: %s%s", subject, mime_eol);
1057             if (operation == SMIME_RESIGN)
1058                 ret = SMIME_write_CMS(out, cms, indata, flags);
1059             else
1060                 ret = SMIME_write_CMS(out, cms, in, flags);
1061         } else if (outformat == FORMAT_PEM) {
1062             ret = PEM_write_bio_CMS_stream(out, cms, in, flags);
1063         } else if (outformat == FORMAT_ASN1) {
1064             ret = i2d_CMS_bio_stream(out, cms, in, flags);
1065         } else {
1066             BIO_printf(bio_err, "Bad output format for CMS file\n");
1067             goto end;
1068         }
1069         if (ret <= 0) {
1070             ret = 6;
1071             goto end;
1072         }
1073     }
1074     ret = 0;
1075  end:
1076     if (ret)
1077         ERR_print_errors(bio_err);
1078     sk_X509_pop_free(encerts, X509_free);
1079     sk_X509_pop_free(other, X509_free);
1080     X509_VERIFY_PARAM_free(vpm);
1081     sk_OPENSSL_STRING_free(sksigners);
1082     sk_OPENSSL_STRING_free(skkeys);
1083     OPENSSL_free(secret_key);
1084     OPENSSL_free(secret_keyid);
1085     OPENSSL_free(pwri_tmp);
1086     ASN1_OBJECT_free(econtent_type);
1087     CMS_ReceiptRequest_free(rr);
1088     sk_OPENSSL_STRING_free(rr_to);
1089     sk_OPENSSL_STRING_free(rr_from);
1090     for (key_param = key_first; key_param;) {
1091         cms_key_param *tparam;
1092         sk_OPENSSL_STRING_free(key_param->param);
1093         tparam = key_param->next;
1094         OPENSSL_free(key_param);
1095         key_param = tparam;
1096     }
1097     X509_STORE_free(store);
1098     X509_free(cert);
1099     X509_free(recip);
1100     X509_free(signer);
1101     EVP_PKEY_free(key);
1102     CMS_ContentInfo_free(cms);
1103     CMS_ContentInfo_free(rcms);
1104     release_engine(e);
1105     BIO_free(rctin);
1106     BIO_free(in);
1107     BIO_free(indata);
1108     BIO_free_all(out);
1109     OPENSSL_free(passin);
1110     return ret;
1111 }
1112
1113 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
1114 {
1115     int i;
1116     BIO *tmp;
1117     if (signerfile == NULL)
1118         return 1;
1119     tmp = BIO_new_file(signerfile, "w");
1120     if (tmp == NULL)
1121         return 0;
1122     for (i = 0; i < sk_X509_num(signers); i++)
1123         PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
1124     BIO_free(tmp);
1125     return 1;
1126 }
1127
1128 /* Minimal callback just to output policy info (if any) */
1129
1130 static int cms_cb(int ok, X509_STORE_CTX *ctx)
1131 {
1132     int error;
1133
1134     error = X509_STORE_CTX_get_error(ctx);
1135
1136     verify_err = error;
1137
1138     if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
1139         && ((error != X509_V_OK) || (ok != 2)))
1140         return ok;
1141
1142     policies_print(ctx);
1143
1144     return ok;
1145
1146 }
1147
1148 static void gnames_stack_print(STACK_OF(GENERAL_NAMES) *gns)
1149 {
1150     STACK_OF(GENERAL_NAME) *gens;
1151     GENERAL_NAME *gen;
1152     int i, j;
1153
1154     for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++) {
1155         gens = sk_GENERAL_NAMES_value(gns, i);
1156         for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) {
1157             gen = sk_GENERAL_NAME_value(gens, j);
1158             BIO_puts(bio_err, "    ");
1159             GENERAL_NAME_print(bio_err, gen);
1160             BIO_puts(bio_err, "\n");
1161         }
1162     }
1163     return;
1164 }
1165
1166 static void receipt_request_print(CMS_ContentInfo *cms)
1167 {
1168     STACK_OF(CMS_SignerInfo) *sis;
1169     CMS_SignerInfo *si;
1170     CMS_ReceiptRequest *rr;
1171     int allorfirst;
1172     STACK_OF(GENERAL_NAMES) *rto, *rlist;
1173     ASN1_STRING *scid;
1174     int i, rv;
1175     sis = CMS_get0_SignerInfos(cms);
1176     for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++) {
1177         si = sk_CMS_SignerInfo_value(sis, i);
1178         rv = CMS_get1_ReceiptRequest(si, &rr);
1179         BIO_printf(bio_err, "Signer %d:\n", i + 1);
1180         if (rv == 0) {
1181             BIO_puts(bio_err, "  No Receipt Request\n");
1182         } else if (rv < 0) {
1183             BIO_puts(bio_err, "  Receipt Request Parse Error\n");
1184             ERR_print_errors(bio_err);
1185         } else {
1186             const char *id;
1187             int idlen;
1188             CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst,
1189                                            &rlist, &rto);
1190             BIO_puts(bio_err, "  Signed Content ID:\n");
1191             idlen = ASN1_STRING_length(scid);
1192             id = (const char *)ASN1_STRING_get0_data(scid);
1193             BIO_dump_indent(bio_err, id, idlen, 4);
1194             BIO_puts(bio_err, "  Receipts From");
1195             if (rlist != NULL) {
1196                 BIO_puts(bio_err, " List:\n");
1197                 gnames_stack_print(rlist);
1198             } else if (allorfirst == 1) {
1199                 BIO_puts(bio_err, ": First Tier\n");
1200             } else if (allorfirst == 0) {
1201                 BIO_puts(bio_err, ": All\n");
1202             } else {
1203                 BIO_printf(bio_err, " Unknown (%d)\n", allorfirst);
1204             }
1205             BIO_puts(bio_err, "  Receipts To:\n");
1206             gnames_stack_print(rto);
1207         }
1208         CMS_ReceiptRequest_free(rr);
1209     }
1210 }
1211
1212 static STACK_OF(GENERAL_NAMES) *make_names_stack(STACK_OF(OPENSSL_STRING) *ns)
1213 {
1214     int i;
1215     STACK_OF(GENERAL_NAMES) *ret;
1216     GENERAL_NAMES *gens = NULL;
1217     GENERAL_NAME *gen = NULL;
1218     ret = sk_GENERAL_NAMES_new_null();
1219     if (ret == NULL)
1220         goto err;
1221     for (i = 0; i < sk_OPENSSL_STRING_num(ns); i++) {
1222         char *str = sk_OPENSSL_STRING_value(ns, i);
1223         gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0);
1224         if (gen == NULL)
1225             goto err;
1226         gens = GENERAL_NAMES_new();
1227         if (gens == NULL)
1228             goto err;
1229         if (!sk_GENERAL_NAME_push(gens, gen))
1230             goto err;
1231         gen = NULL;
1232         if (!sk_GENERAL_NAMES_push(ret, gens))
1233             goto err;
1234         gens = NULL;
1235     }
1236
1237     return ret;
1238
1239  err:
1240     sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free);
1241     GENERAL_NAMES_free(gens);
1242     GENERAL_NAME_free(gen);
1243     return NULL;
1244 }
1245
1246 static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING)
1247                                                 *rr_to, int rr_allorfirst, STACK_OF(OPENSSL_STRING)
1248                                                 *rr_from)
1249 {
1250     STACK_OF(GENERAL_NAMES) *rct_to = NULL, *rct_from = NULL;
1251     CMS_ReceiptRequest *rr;
1252     rct_to = make_names_stack(rr_to);
1253     if (rct_to == NULL)
1254         goto err;
1255     if (rr_from != NULL) {
1256         rct_from = make_names_stack(rr_from);
1257         if (rct_from == NULL)
1258             goto err;
1259     } else {
1260         rct_from = NULL;
1261     }
1262     rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from,
1263                                     rct_to);
1264     return rr;
1265  err:
1266     sk_GENERAL_NAMES_pop_free(rct_to, GENERAL_NAMES_free);
1267     return NULL;
1268 }
1269
1270 static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
1271                               STACK_OF(OPENSSL_STRING) *param)
1272 {
1273     char *keyopt;
1274     int i;
1275     if (sk_OPENSSL_STRING_num(param) <= 0)
1276         return 1;
1277     for (i = 0; i < sk_OPENSSL_STRING_num(param); i++) {
1278         keyopt = sk_OPENSSL_STRING_value(param, i);
1279         if (pkey_ctrl_string(pctx, keyopt) <= 0) {
1280             BIO_printf(bio_err, "parameter error \"%s\"\n", keyopt);
1281             ERR_print_errors(bio_err);
1282             return 0;
1283         }
1284     }
1285     return 1;
1286 }
1287
1288 #endif