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      1 /*
      2  * Copyright 2008-2020 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 #include "progs.h"
     16 
     17 #ifndef OPENSSL_NO_CMS
     18 
     19 # include <openssl/crypto.h>
     20 # include <openssl/pem.h>
     21 # include <openssl/err.h>
     22 # include <openssl/x509_vfy.h>
     23 # include <openssl/x509v3.h>
     24 # include <openssl/cms.h>
     25 
     26 static int save_certs(char *signerfile, STACK_OF(X509) *signers);
     27 static int cms_cb(int ok, X509_STORE_CTX *ctx);
     28 static void receipt_request_print(CMS_ContentInfo *cms);
     29 static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING)
     30                                                 *rr_to, int rr_allorfirst, STACK_OF(OPENSSL_STRING)
     31                                                 *rr_from);
     32 static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
     33                               STACK_OF(OPENSSL_STRING) *param);
     34 
     35 # define SMIME_OP        0x10
     36 # define SMIME_IP        0x20
     37 # define SMIME_SIGNERS   0x40
     38 # define SMIME_ENCRYPT           (1 | SMIME_OP)
     39 # define SMIME_DECRYPT           (2 | SMIME_IP)
     40 # define SMIME_SIGN              (3 | SMIME_OP | SMIME_SIGNERS)
     41 # define SMIME_VERIFY            (4 | SMIME_IP)
     42 # define SMIME_CMSOUT            (5 | SMIME_IP | SMIME_OP)
     43 # define SMIME_RESIGN            (6 | SMIME_IP | SMIME_OP | SMIME_SIGNERS)
     44 # define SMIME_DATAOUT           (7 | SMIME_IP)
     45 # define SMIME_DATA_CREATE       (8 | SMIME_OP)
     46 # define SMIME_DIGEST_VERIFY     (9 | SMIME_IP)
     47 # define SMIME_DIGEST_CREATE     (10 | SMIME_OP)
     48 # define SMIME_UNCOMPRESS        (11 | SMIME_IP)
     49 # define SMIME_COMPRESS          (12 | SMIME_OP)
     50 # define SMIME_ENCRYPTED_DECRYPT (13 | SMIME_IP)
     51 # define SMIME_ENCRYPTED_ENCRYPT (14 | SMIME_OP)
     52 # define SMIME_SIGN_RECEIPT      (15 | SMIME_IP | SMIME_OP)
     53 # define SMIME_VERIFY_RECEIPT    (16 | SMIME_IP)
     54 
     55 static int verify_err = 0;
     56 
     57 typedef struct cms_key_param_st cms_key_param;
     58 
     59 struct cms_key_param_st {
     60     int idx;
     61     STACK_OF(OPENSSL_STRING) *param;
     62     cms_key_param *next;
     63 };
     64 
     65 typedef enum OPTION_choice {
     66     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
     67     OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_ENCRYPT,
     68     OPT_DECRYPT, OPT_SIGN, OPT_SIGN_RECEIPT, OPT_RESIGN,
     69     OPT_VERIFY, OPT_VERIFY_RETCODE, OPT_VERIFY_RECEIPT,
     70     OPT_CMSOUT, OPT_DATA_OUT, OPT_DATA_CREATE, OPT_DIGEST_VERIFY,
     71     OPT_DIGEST_CREATE, OPT_COMPRESS, OPT_UNCOMPRESS,
     72     OPT_ED_DECRYPT, OPT_ED_ENCRYPT, OPT_DEBUG_DECRYPT, OPT_TEXT,
     73     OPT_ASCIICRLF, OPT_NOINTERN, OPT_NOVERIFY, OPT_NOCERTS,
     74     OPT_NOATTR, OPT_NODETACH, OPT_NOSMIMECAP, OPT_BINARY, OPT_KEYID,
     75     OPT_NOSIGS, OPT_NO_CONTENT_VERIFY, OPT_NO_ATTR_VERIFY, OPT_INDEF,
     76     OPT_NOINDEF, OPT_CRLFEOL, OPT_NOOUT, OPT_RR_PRINT,
     77     OPT_RR_ALL, OPT_RR_FIRST, OPT_RCTFORM, OPT_CERTFILE, OPT_CAFILE,
     78     OPT_CAPATH, OPT_NOCAPATH, OPT_NOCAFILE,OPT_CONTENT, OPT_PRINT,
     79     OPT_SECRETKEY, OPT_SECRETKEYID, OPT_PWRI_PASSWORD, OPT_ECONTENT_TYPE,
     80     OPT_PASSIN, OPT_TO, OPT_FROM, OPT_SUBJECT, OPT_SIGNER, OPT_RECIP,
     81     OPT_CERTSOUT, OPT_MD, OPT_INKEY, OPT_KEYFORM, OPT_KEYOPT, OPT_RR_FROM,
     82     OPT_RR_TO, OPT_AES128_WRAP, OPT_AES192_WRAP, OPT_AES256_WRAP,
     83     OPT_3DES_WRAP, OPT_ENGINE,
     84     OPT_R_ENUM,
     85     OPT_V_ENUM,
     86     OPT_CIPHER
     87 } OPTION_CHOICE;
     88 
     89 const OPTIONS cms_options[] = {
     90     {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"},
     91     {OPT_HELP_STR, 1, '-',
     92         "  cert.pem... recipient certs for encryption\n"},
     93     {OPT_HELP_STR, 1, '-', "Valid options are:\n"},
     94     {"help", OPT_HELP, '-', "Display this summary"},
     95     {"inform", OPT_INFORM, 'c', "Input format SMIME (default), PEM or DER"},
     96     {"outform", OPT_OUTFORM, 'c',
     97      "Output format SMIME (default), PEM or DER"},
     98     {"in", OPT_IN, '<', "Input file"},
     99     {"out", OPT_OUT, '>', "Output file"},
    100     {"encrypt", OPT_ENCRYPT, '-', "Encrypt message"},
    101     {"decrypt", OPT_DECRYPT, '-', "Decrypt encrypted message"},
    102     {"sign", OPT_SIGN, '-', "Sign message"},
    103     {"sign_receipt", OPT_SIGN_RECEIPT, '-', "Generate a signed receipt for the message"},
    104     {"resign", OPT_RESIGN, '-', "Resign a signed message"},
    105     {"verify", OPT_VERIFY, '-', "Verify signed message"},
    106     {"verify_retcode", OPT_VERIFY_RETCODE, '-'},
    107     {"verify_receipt", OPT_VERIFY_RECEIPT, '<'},
    108     {"cmsout", OPT_CMSOUT, '-', "Output CMS structure"},
    109     {"data_out", OPT_DATA_OUT, '-'},
    110     {"data_create", OPT_DATA_CREATE, '-'},
    111     {"digest_verify", OPT_DIGEST_VERIFY, '-'},
    112     {"digest_create", OPT_DIGEST_CREATE, '-'},
    113     {"compress", OPT_COMPRESS, '-'},
    114     {"uncompress", OPT_UNCOMPRESS, '-'},
    115     {"EncryptedData_decrypt", OPT_ED_DECRYPT, '-'},
    116     {"EncryptedData_encrypt", OPT_ED_ENCRYPT, '-'},
    117     {"debug_decrypt", OPT_DEBUG_DECRYPT, '-'},
    118     {"text", OPT_TEXT, '-', "Include or delete text MIME headers"},
    119     {"asciicrlf", OPT_ASCIICRLF, '-'},
    120     {"nointern", OPT_NOINTERN, '-',
    121      "Don't search certificates in message for signer"},
    122     {"noverify", OPT_NOVERIFY, '-', "Don't verify signers certificate"},
    123     {"nocerts", OPT_NOCERTS, '-',
    124      "Don't include signers certificate when signing"},
    125     {"noattr", OPT_NOATTR, '-', "Don't include any signed attributes"},
    126     {"nodetach", OPT_NODETACH, '-', "Use opaque signing"},
    127     {"nosmimecap", OPT_NOSMIMECAP, '-', "Omit the SMIMECapabilities attribute"},
    128     {"binary", OPT_BINARY, '-', "Don't translate message to text"},
    129     {"keyid", OPT_KEYID, '-', "Use subject key identifier"},
    130     {"nosigs", OPT_NOSIGS, '-', "Don't verify message signature"},
    131     {"no_content_verify", OPT_NO_CONTENT_VERIFY, '-'},
    132     {"no_attr_verify", OPT_NO_ATTR_VERIFY, '-'},
    133     {"stream", OPT_INDEF, '-', "Enable CMS streaming"},
    134     {"indef", OPT_INDEF, '-', "Same as -stream"},
    135     {"noindef", OPT_NOINDEF, '-', "Disable CMS streaming"},
    136     {"crlfeol", OPT_CRLFEOL, '-', "Use CRLF as EOL termination instead of CR only" },
    137     {"noout", OPT_NOOUT, '-', "For the -cmsout operation do not output the parsed CMS structure"},
    138     {"receipt_request_print", OPT_RR_PRINT, '-', "Print CMS Receipt Request" },
    139     {"receipt_request_all", OPT_RR_ALL, '-'},
    140     {"receipt_request_first", OPT_RR_FIRST, '-'},
    141     {"rctform", OPT_RCTFORM, 'F', "Receipt file format"},
    142     {"certfile", OPT_CERTFILE, '<', "Other certificates file"},
    143     {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
    144     {"CApath", OPT_CAPATH, '/', "trusted certificates directory"},
    145     {"no-CAfile", OPT_NOCAFILE, '-',
    146      "Do not load the default certificates file"},
    147     {"no-CApath", OPT_NOCAPATH, '-',
    148      "Do not load certificates from the default certificates directory"},
    149     {"content", OPT_CONTENT, '<',
    150      "Supply or override content for detached signature"},
    151     {"print", OPT_PRINT, '-',
    152      "For the -cmsout operation print out all fields of the CMS structure"},
    153     {"secretkey", OPT_SECRETKEY, 's'},
    154     {"secretkeyid", OPT_SECRETKEYID, 's'},
    155     {"pwri_password", OPT_PWRI_PASSWORD, 's'},
    156     {"econtent_type", OPT_ECONTENT_TYPE, 's'},
    157     {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
    158     {"to", OPT_TO, 's', "To address"},
    159     {"from", OPT_FROM, 's', "From address"},
    160     {"subject", OPT_SUBJECT, 's', "Subject"},
    161     {"signer", OPT_SIGNER, 's', "Signer certificate file"},
    162     {"recip", OPT_RECIP, '<', "Recipient cert file for decryption"},
    163     {"certsout", OPT_CERTSOUT, '>', "Certificate output file"},
    164     {"md", OPT_MD, 's', "Digest algorithm to use when signing or resigning"},
    165     {"inkey", OPT_INKEY, 's',
    166      "Input private key (if not signer or recipient)"},
    167     {"keyform", OPT_KEYFORM, 'f', "Input private key format (PEM or ENGINE)"},
    168     {"keyopt", OPT_KEYOPT, 's', "Set public key parameters as n:v pairs"},
    169     {"receipt_request_from", OPT_RR_FROM, 's'},
    170     {"receipt_request_to", OPT_RR_TO, 's'},
    171     {"", OPT_CIPHER, '-', "Any supported cipher"},
    172     OPT_R_OPTIONS,
    173     OPT_V_OPTIONS,
    174     {"aes128-wrap", OPT_AES128_WRAP, '-', "Use AES128 to wrap key"},
    175     {"aes192-wrap", OPT_AES192_WRAP, '-', "Use AES192 to wrap key"},
    176     {"aes256-wrap", OPT_AES256_WRAP, '-', "Use AES256 to wrap key"},
    177 # ifndef OPENSSL_NO_DES
    178     {"des3-wrap", OPT_3DES_WRAP, '-', "Use 3DES-EDE to wrap key"},
    179 # endif
    180 # ifndef OPENSSL_NO_ENGINE
    181     {"engine", OPT_ENGINE, 's', "Use engine e, possibly a hardware device"},
    182 # endif
    183     {NULL}
    184 };
    185 
    186 int cms_main(int argc, char **argv)
    187 {
    188     ASN1_OBJECT *econtent_type = NULL;
    189     BIO *in = NULL, *out = NULL, *indata = NULL, *rctin = NULL;
    190     CMS_ContentInfo *cms = NULL, *rcms = NULL;
    191     CMS_ReceiptRequest *rr = NULL;
    192     ENGINE *e = NULL;
    193     EVP_PKEY *key = NULL;
    194     const EVP_CIPHER *cipher = NULL, *wrap_cipher = NULL;
    195     const EVP_MD *sign_md = NULL;
    196     STACK_OF(OPENSSL_STRING) *rr_to = NULL, *rr_from = NULL;
    197     STACK_OF(OPENSSL_STRING) *sksigners = NULL, *skkeys = NULL;
    198     STACK_OF(X509) *encerts = NULL, *other = NULL;
    199     X509 *cert = NULL, *recip = NULL, *signer = NULL;
    200     X509_STORE *store = NULL;
    201     X509_VERIFY_PARAM *vpm = NULL;
    202     char *certfile = NULL, *keyfile = NULL, *contfile = NULL;
    203     const char *CAfile = NULL, *CApath = NULL;
    204     char *certsoutfile = NULL;
    205     int noCAfile = 0, noCApath = 0;
    206     char *infile = NULL, *outfile = NULL, *rctfile = NULL;
    207     char *passinarg = NULL, *passin = NULL, *signerfile = NULL, *recipfile = NULL;
    208     char *to = NULL, *from = NULL, *subject = NULL, *prog;
    209     cms_key_param *key_first = NULL, *key_param = NULL;
    210     int flags = CMS_DETACHED, noout = 0, print = 0, keyidx = -1, vpmtouched = 0;
    211     int informat = FORMAT_SMIME, outformat = FORMAT_SMIME;
    212     int operation = 0, ret = 1, rr_print = 0, rr_allorfirst = -1;
    213     int verify_retcode = 0, rctformat = FORMAT_SMIME, keyform = FORMAT_PEM;
    214     size_t secret_keylen = 0, secret_keyidlen = 0;
    215     unsigned char *pwri_pass = NULL, *pwri_tmp = NULL;
    216     unsigned char *secret_key = NULL, *secret_keyid = NULL;
    217     long ltmp;
    218     const char *mime_eol = "\n";
    219     OPTION_CHOICE o;
    220 
    221     if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
    222         return 1;
    223 
    224     prog = opt_init(argc, argv, cms_options);
    225     while ((o = opt_next()) != OPT_EOF) {
    226         switch (o) {
    227         case OPT_EOF:
    228         case OPT_ERR:
    229  opthelp:
    230             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
    231             goto end;
    232         case OPT_HELP:
    233             opt_help(cms_options);
    234             ret = 0;
    235             goto end;
    236         case OPT_INFORM:
    237             if (!opt_format(opt_arg(), OPT_FMT_PDS, &informat))
    238                 goto opthelp;
    239             break;
    240         case OPT_OUTFORM:
    241             if (!opt_format(opt_arg(), OPT_FMT_PDS, &outformat))
    242                 goto opthelp;
    243             break;
    244         case OPT_OUT:
    245             outfile = opt_arg();
    246             break;
    247         case OPT_ENCRYPT:
    248             operation = SMIME_ENCRYPT;
    249             break;
    250         case OPT_DECRYPT:
    251             operation = SMIME_DECRYPT;
    252             break;
    253         case OPT_SIGN:
    254             operation = SMIME_SIGN;
    255             break;
    256         case OPT_SIGN_RECEIPT:
    257             operation = SMIME_SIGN_RECEIPT;
    258             break;
    259         case OPT_RESIGN:
    260             operation = SMIME_RESIGN;
    261             break;
    262         case OPT_VERIFY:
    263             operation = SMIME_VERIFY;
    264             break;
    265         case OPT_VERIFY_RETCODE:
    266             verify_retcode = 1;
    267             break;
    268         case OPT_VERIFY_RECEIPT:
    269             operation = SMIME_VERIFY_RECEIPT;
    270             rctfile = opt_arg();
    271             break;
    272         case OPT_CMSOUT:
    273             operation = SMIME_CMSOUT;
    274             break;
    275         case OPT_DATA_OUT:
    276             operation = SMIME_DATAOUT;
    277             break;
    278         case OPT_DATA_CREATE:
    279             operation = SMIME_DATA_CREATE;
    280             break;
    281         case OPT_DIGEST_VERIFY:
    282             operation = SMIME_DIGEST_VERIFY;
    283             break;
    284         case OPT_DIGEST_CREATE:
    285             operation = SMIME_DIGEST_CREATE;
    286             break;
    287         case OPT_COMPRESS:
    288             operation = SMIME_COMPRESS;
    289             break;
    290         case OPT_UNCOMPRESS:
    291             operation = SMIME_UNCOMPRESS;
    292             break;
    293         case OPT_ED_DECRYPT:
    294             operation = SMIME_ENCRYPTED_DECRYPT;
    295             break;
    296         case OPT_ED_ENCRYPT:
    297             operation = SMIME_ENCRYPTED_ENCRYPT;
    298             break;
    299         case OPT_DEBUG_DECRYPT:
    300             flags |= CMS_DEBUG_DECRYPT;
    301             break;
    302         case OPT_TEXT:
    303             flags |= CMS_TEXT;
    304             break;
    305         case OPT_ASCIICRLF:
    306             flags |= CMS_ASCIICRLF;
    307             break;
    308         case OPT_NOINTERN:
    309             flags |= CMS_NOINTERN;
    310             break;
    311         case OPT_NOVERIFY:
    312             flags |= CMS_NO_SIGNER_CERT_VERIFY;
    313             break;
    314         case OPT_NOCERTS:
    315             flags |= CMS_NOCERTS;
    316             break;
    317         case OPT_NOATTR:
    318             flags |= CMS_NOATTR;
    319             break;
    320         case OPT_NODETACH:
    321             flags &= ~CMS_DETACHED;
    322             break;
    323         case OPT_NOSMIMECAP:
    324             flags |= CMS_NOSMIMECAP;
    325             break;
    326         case OPT_BINARY:
    327             flags |= CMS_BINARY;
    328             break;
    329         case OPT_KEYID:
    330             flags |= CMS_USE_KEYID;
    331             break;
    332         case OPT_NOSIGS:
    333             flags |= CMS_NOSIGS;
    334             break;
    335         case OPT_NO_CONTENT_VERIFY:
    336             flags |= CMS_NO_CONTENT_VERIFY;
    337             break;
    338         case OPT_NO_ATTR_VERIFY:
    339             flags |= CMS_NO_ATTR_VERIFY;
    340             break;
    341         case OPT_INDEF:
    342             flags |= CMS_STREAM;
    343             break;
    344         case OPT_NOINDEF:
    345             flags &= ~CMS_STREAM;
    346             break;
    347         case OPT_CRLFEOL:
    348             mime_eol = "\r\n";
    349             flags |= CMS_CRLFEOL;
    350             break;
    351         case OPT_NOOUT:
    352             noout = 1;
    353             break;
    354         case OPT_RR_PRINT:
    355             rr_print = 1;
    356             break;
    357         case OPT_RR_ALL:
    358             rr_allorfirst = 0;
    359             break;
    360         case OPT_RR_FIRST:
    361             rr_allorfirst = 1;
    362             break;
    363         case OPT_RCTFORM:
    364             if (rctformat == FORMAT_SMIME)
    365                 rcms = SMIME_read_CMS(rctin, NULL);
    366             else if (rctformat == FORMAT_PEM)
    367                 rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
    368             else if (rctformat == FORMAT_ASN1)
    369                 if (!opt_format(opt_arg(),
    370                                 OPT_FMT_PEMDER | OPT_FMT_SMIME, &rctformat))
    371                     goto opthelp;
    372             break;
    373         case OPT_CERTFILE:
    374             certfile = opt_arg();
    375             break;
    376         case OPT_CAFILE:
    377             CAfile = opt_arg();
    378             break;
    379         case OPT_CAPATH:
    380             CApath = opt_arg();
    381             break;
    382         case OPT_NOCAFILE:
    383             noCAfile = 1;
    384             break;
    385         case OPT_NOCAPATH:
    386             noCApath = 1;
    387             break;
    388         case OPT_IN:
    389             infile = opt_arg();
    390             break;
    391         case OPT_CONTENT:
    392             contfile = opt_arg();
    393             break;
    394         case OPT_RR_FROM:
    395             if (rr_from == NULL
    396                 && (rr_from = sk_OPENSSL_STRING_new_null()) == NULL)
    397                 goto end;
    398             sk_OPENSSL_STRING_push(rr_from, opt_arg());
    399             break;
    400         case OPT_RR_TO:
    401             if (rr_to == NULL
    402                 && (rr_to = sk_OPENSSL_STRING_new_null()) == NULL)
    403                 goto end;
    404             sk_OPENSSL_STRING_push(rr_to, opt_arg());
    405             break;
    406         case OPT_PRINT:
    407             noout = print = 1;
    408             break;
    409         case OPT_SECRETKEY:
    410             if (secret_key != NULL) {
    411                 BIO_printf(bio_err, "Invalid key (supplied twice) %s\n",
    412                            opt_arg());
    413                 goto opthelp;
    414             }
    415             secret_key = OPENSSL_hexstr2buf(opt_arg(), &ltmp);
    416             if (secret_key == NULL) {
    417                 BIO_printf(bio_err, "Invalid key %s\n", opt_arg());
    418                 goto end;
    419             }
    420             secret_keylen = (size_t)ltmp;
    421             break;
    422         case OPT_SECRETKEYID:
    423             if (secret_keyid != NULL) {
    424                 BIO_printf(bio_err, "Invalid id (supplied twice) %s\n",
    425                            opt_arg());
    426                 goto opthelp;
    427             }
    428             secret_keyid = OPENSSL_hexstr2buf(opt_arg(), &ltmp);
    429             if (secret_keyid == NULL) {
    430                 BIO_printf(bio_err, "Invalid id %s\n", opt_arg());
    431                 goto opthelp;
    432             }
    433             secret_keyidlen = (size_t)ltmp;
    434             break;
    435         case OPT_PWRI_PASSWORD:
    436             pwri_pass = (unsigned char *)opt_arg();
    437             break;
    438         case OPT_ECONTENT_TYPE:
    439             if (econtent_type != NULL) {
    440                 BIO_printf(bio_err, "Invalid OID (supplied twice) %s\n",
    441                            opt_arg());
    442                 goto opthelp;
    443             }
    444             econtent_type = OBJ_txt2obj(opt_arg(), 0);
    445             if (econtent_type == NULL) {
    446                 BIO_printf(bio_err, "Invalid OID %s\n", opt_arg());
    447                 goto opthelp;
    448             }
    449             break;
    450         case OPT_ENGINE:
    451             e = setup_engine(opt_arg(), 0);
    452             break;
    453         case OPT_PASSIN:
    454             passinarg = opt_arg();
    455             break;
    456         case OPT_TO:
    457             to = opt_arg();
    458             break;
    459         case OPT_FROM:
    460             from = opt_arg();
    461             break;
    462         case OPT_SUBJECT:
    463             subject = opt_arg();
    464             break;
    465         case OPT_CERTSOUT:
    466             certsoutfile = opt_arg();
    467             break;
    468         case OPT_MD:
    469             if (!opt_md(opt_arg(), &sign_md))
    470                 goto end;
    471             break;
    472         case OPT_SIGNER:
    473             /* If previous -signer argument add signer to list */
    474             if (signerfile != NULL) {
    475                 if (sksigners == NULL
    476                     && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
    477                     goto end;
    478                 sk_OPENSSL_STRING_push(sksigners, signerfile);
    479                 if (keyfile == NULL)
    480                     keyfile = signerfile;
    481                 if (skkeys == NULL
    482                     && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
    483                     goto end;
    484                 sk_OPENSSL_STRING_push(skkeys, keyfile);
    485                 keyfile = NULL;
    486             }
    487             signerfile = opt_arg();
    488             break;
    489         case OPT_INKEY:
    490             /* If previous -inkey argument add signer to list */
    491             if (keyfile != NULL) {
    492                 if (signerfile == NULL) {
    493                     BIO_puts(bio_err, "Illegal -inkey without -signer\n");
    494                     goto end;
    495                 }
    496                 if (sksigners == NULL
    497                     && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
    498                     goto end;
    499                 sk_OPENSSL_STRING_push(sksigners, signerfile);
    500                 signerfile = NULL;
    501                 if (skkeys == NULL
    502                     && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
    503                     goto end;
    504                 sk_OPENSSL_STRING_push(skkeys, keyfile);
    505             }
    506             keyfile = opt_arg();
    507             break;
    508         case OPT_KEYFORM:
    509             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
    510                 goto opthelp;
    511             break;
    512         case OPT_RECIP:
    513             if (operation == SMIME_ENCRYPT) {
    514                 if (encerts == NULL && (encerts = sk_X509_new_null()) == NULL)
    515                     goto end;
    516                 cert = load_cert(opt_arg(), FORMAT_PEM,
    517                                  "recipient certificate file");
    518                 if (cert == NULL)
    519                     goto end;
    520                 sk_X509_push(encerts, cert);
    521                 cert = NULL;
    522             } else {
    523                 recipfile = opt_arg();
    524             }
    525             break;
    526         case OPT_CIPHER:
    527             if (!opt_cipher(opt_unknown(), &cipher))
    528                 goto end;
    529             break;
    530         case OPT_KEYOPT:
    531             keyidx = -1;
    532             if (operation == SMIME_ENCRYPT) {
    533                 if (encerts != NULL)
    534                     keyidx += sk_X509_num(encerts);
    535             } else {
    536                 if (keyfile != NULL || signerfile != NULL)
    537                     keyidx++;
    538                 if (skkeys != NULL)
    539                     keyidx += sk_OPENSSL_STRING_num(skkeys);
    540             }
    541             if (keyidx < 0) {
    542                 BIO_printf(bio_err, "No key specified\n");
    543                 goto opthelp;
    544             }
    545             if (key_param == NULL || key_param->idx != keyidx) {
    546                 cms_key_param *nparam;
    547                 nparam = app_malloc(sizeof(*nparam), "key param buffer");
    548                 if ((nparam->param = sk_OPENSSL_STRING_new_null()) == NULL) {
    549                     OPENSSL_free(nparam);
    550                     goto end;
    551                 }
    552                 nparam->idx = keyidx;
    553                 nparam->next = NULL;
    554                 if (key_first == NULL)
    555                     key_first = nparam;
    556                 else
    557                     key_param->next = nparam;
    558                 key_param = nparam;
    559             }
    560             sk_OPENSSL_STRING_push(key_param->param, opt_arg());
    561             break;
    562         case OPT_V_CASES:
    563             if (!opt_verify(o, vpm))
    564                 goto end;
    565             vpmtouched++;
    566             break;
    567         case OPT_R_CASES:
    568             if (!opt_rand(o))
    569                 goto end;
    570             break;
    571         case OPT_3DES_WRAP:
    572 # ifndef OPENSSL_NO_DES
    573             wrap_cipher = EVP_des_ede3_wrap();
    574 # endif
    575             break;
    576         case OPT_AES128_WRAP:
    577             wrap_cipher = EVP_aes_128_wrap();
    578             break;
    579         case OPT_AES192_WRAP:
    580             wrap_cipher = EVP_aes_192_wrap();
    581             break;
    582         case OPT_AES256_WRAP:
    583             wrap_cipher = EVP_aes_256_wrap();
    584             break;
    585         }
    586     }
    587     argc = opt_num_rest();
    588     argv = opt_rest();
    589 
    590     if ((rr_allorfirst != -1 || rr_from != NULL) && rr_to == NULL) {
    591         BIO_puts(bio_err, "No Signed Receipts Recipients\n");
    592         goto opthelp;
    593     }
    594 
    595     if (!(operation & SMIME_SIGNERS) && (rr_to != NULL || rr_from != NULL)) {
    596         BIO_puts(bio_err, "Signed receipts only allowed with -sign\n");
    597         goto opthelp;
    598     }
    599     if (!(operation & SMIME_SIGNERS) && (skkeys != NULL || sksigners != NULL)) {
    600         BIO_puts(bio_err, "Multiple signers or keys not allowed\n");
    601         goto opthelp;
    602     }
    603 
    604     if (operation & SMIME_SIGNERS) {
    605         if (keyfile != NULL && signerfile == NULL) {
    606             BIO_puts(bio_err, "Illegal -inkey without -signer\n");
    607             goto opthelp;
    608         }
    609         /* Check to see if any final signer needs to be appended */
    610         if (signerfile != NULL) {
    611             if (sksigners == NULL
    612                 && (sksigners = sk_OPENSSL_STRING_new_null()) == NULL)
    613                 goto end;
    614             sk_OPENSSL_STRING_push(sksigners, signerfile);
    615             if (skkeys == NULL && (skkeys = sk_OPENSSL_STRING_new_null()) == NULL)
    616                 goto end;
    617             if (keyfile == NULL)
    618                 keyfile = signerfile;
    619             sk_OPENSSL_STRING_push(skkeys, keyfile);
    620         }
    621         if (sksigners == NULL) {
    622             BIO_printf(bio_err, "No signer certificate specified\n");
    623             goto opthelp;
    624         }
    625         signerfile = NULL;
    626         keyfile = NULL;
    627     } else if (operation == SMIME_DECRYPT) {
    628         if (recipfile == NULL && keyfile == NULL
    629             && secret_key == NULL && pwri_pass == NULL) {
    630             BIO_printf(bio_err,
    631                        "No recipient certificate or key specified\n");
    632             goto opthelp;
    633         }
    634     } else if (operation == SMIME_ENCRYPT) {
    635         if (*argv == NULL && secret_key == NULL
    636             && pwri_pass == NULL && encerts == NULL) {
    637             BIO_printf(bio_err, "No recipient(s) certificate(s) specified\n");
    638             goto opthelp;
    639         }
    640     } else if (!operation) {
    641         BIO_printf(bio_err, "No operation option (-encrypt|-decrypt|-sign|-verify|...) specified.\n");
    642         goto opthelp;
    643     }
    644 
    645     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
    646         BIO_printf(bio_err, "Error getting password\n");
    647         goto end;
    648     }
    649 
    650     ret = 2;
    651 
    652     if (!(operation & SMIME_SIGNERS))
    653         flags &= ~CMS_DETACHED;
    654 
    655     if (!(operation & SMIME_OP))
    656         if (flags & CMS_BINARY)
    657             outformat = FORMAT_BINARY;
    658 
    659     if (!(operation & SMIME_IP))
    660         if (flags & CMS_BINARY)
    661             informat = FORMAT_BINARY;
    662 
    663     if (operation == SMIME_ENCRYPT) {
    664         if (!cipher) {
    665 # ifndef OPENSSL_NO_DES
    666             cipher = EVP_des_ede3_cbc();
    667 # else
    668             BIO_printf(bio_err, "No cipher selected\n");
    669             goto end;
    670 # endif
    671         }
    672 
    673         if (secret_key && !secret_keyid) {
    674             BIO_printf(bio_err, "No secret key id\n");
    675             goto end;
    676         }
    677 
    678         if (*argv && encerts == NULL)
    679             if ((encerts = sk_X509_new_null()) == NULL)
    680                 goto end;
    681         while (*argv) {
    682             if ((cert = load_cert(*argv, FORMAT_PEM,
    683                                   "recipient certificate file")) == NULL)
    684                 goto end;
    685             sk_X509_push(encerts, cert);
    686             cert = NULL;
    687             argv++;
    688         }
    689     }
    690 
    691     if (certfile != NULL) {
    692         if (!load_certs(certfile, &other, FORMAT_PEM, NULL,
    693                         "certificate file")) {
    694             ERR_print_errors(bio_err);
    695             goto end;
    696         }
    697     }
    698 
    699     if (recipfile != NULL && (operation == SMIME_DECRYPT)) {
    700         if ((recip = load_cert(recipfile, FORMAT_PEM,
    701                                "recipient certificate file")) == NULL) {
    702             ERR_print_errors(bio_err);
    703             goto end;
    704         }
    705     }
    706 
    707     if (operation == SMIME_SIGN_RECEIPT) {
    708         if ((signer = load_cert(signerfile, FORMAT_PEM,
    709                                 "receipt signer certificate file")) == NULL) {
    710             ERR_print_errors(bio_err);
    711             goto end;
    712         }
    713     }
    714 
    715     if (operation == SMIME_DECRYPT) {
    716         if (keyfile == NULL)
    717             keyfile = recipfile;
    718     } else if ((operation == SMIME_SIGN) || (operation == SMIME_SIGN_RECEIPT)) {
    719         if (keyfile == NULL)
    720             keyfile = signerfile;
    721     } else {
    722         keyfile = NULL;
    723     }
    724 
    725     if (keyfile != NULL) {
    726         key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
    727         if (key == NULL)
    728             goto end;
    729     }
    730 
    731     in = bio_open_default(infile, 'r', informat);
    732     if (in == NULL)
    733         goto end;
    734 
    735     if (operation & SMIME_IP) {
    736         if (informat == FORMAT_SMIME) {
    737             cms = SMIME_read_CMS(in, &indata);
    738         } else if (informat == FORMAT_PEM) {
    739             cms = PEM_read_bio_CMS(in, NULL, NULL, NULL);
    740         } else if (informat == FORMAT_ASN1) {
    741             cms = d2i_CMS_bio(in, NULL);
    742         } else {
    743             BIO_printf(bio_err, "Bad input format for CMS file\n");
    744             goto end;
    745         }
    746 
    747         if (cms == NULL) {
    748             BIO_printf(bio_err, "Error reading S/MIME message\n");
    749             goto end;
    750         }
    751         if (contfile != NULL) {
    752             BIO_free(indata);
    753             if ((indata = BIO_new_file(contfile, "rb")) == NULL) {
    754                 BIO_printf(bio_err, "Can't read content file %s\n", contfile);
    755                 goto end;
    756             }
    757         }
    758         if (certsoutfile != NULL) {
    759             STACK_OF(X509) *allcerts;
    760             allcerts = CMS_get1_certs(cms);
    761             if (!save_certs(certsoutfile, allcerts)) {
    762                 BIO_printf(bio_err,
    763                            "Error writing certs to %s\n", certsoutfile);
    764                 ret = 5;
    765                 goto end;
    766             }
    767             sk_X509_pop_free(allcerts, X509_free);
    768         }
    769     }
    770 
    771     if (rctfile != NULL) {
    772         char *rctmode = (rctformat == FORMAT_ASN1) ? "rb" : "r";
    773         if ((rctin = BIO_new_file(rctfile, rctmode)) == NULL) {
    774             BIO_printf(bio_err, "Can't open receipt file %s\n", rctfile);
    775             goto end;
    776         }
    777 
    778         if (rctformat == FORMAT_SMIME) {
    779             rcms = SMIME_read_CMS(rctin, NULL);
    780         } else if (rctformat == FORMAT_PEM) {
    781             rcms = PEM_read_bio_CMS(rctin, NULL, NULL, NULL);
    782         } else if (rctformat == FORMAT_ASN1) {
    783             rcms = d2i_CMS_bio(rctin, NULL);
    784         } else {
    785             BIO_printf(bio_err, "Bad input format for receipt\n");
    786             goto end;
    787         }
    788 
    789         if (rcms == NULL) {
    790             BIO_printf(bio_err, "Error reading receipt\n");
    791             goto end;
    792         }
    793     }
    794 
    795     out = bio_open_default(outfile, 'w', outformat);
    796     if (out == NULL)
    797         goto end;
    798 
    799     if ((operation == SMIME_VERIFY) || (operation == SMIME_VERIFY_RECEIPT)) {
    800         if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL)
    801             goto end;
    802         X509_STORE_set_verify_cb(store, cms_cb);
    803         if (vpmtouched)
    804             X509_STORE_set1_param(store, vpm);
    805     }
    806 
    807     ret = 3;
    808 
    809     if (operation == SMIME_DATA_CREATE) {
    810         cms = CMS_data_create(in, flags);
    811     } else if (operation == SMIME_DIGEST_CREATE) {
    812         cms = CMS_digest_create(in, sign_md, flags);
    813     } else if (operation == SMIME_COMPRESS) {
    814         cms = CMS_compress(in, -1, flags);
    815     } else if (operation == SMIME_ENCRYPT) {
    816         int i;
    817         flags |= CMS_PARTIAL;
    818         cms = CMS_encrypt(NULL, in, cipher, flags);
    819         if (cms == NULL)
    820             goto end;
    821         for (i = 0; i < sk_X509_num(encerts); i++) {
    822             CMS_RecipientInfo *ri;
    823             cms_key_param *kparam;
    824             int tflags = flags;
    825             X509 *x = sk_X509_value(encerts, i);
    826             for (kparam = key_first; kparam; kparam = kparam->next) {
    827                 if (kparam->idx == i) {
    828                     tflags |= CMS_KEY_PARAM;
    829                     break;
    830                 }
    831             }
    832             ri = CMS_add1_recipient_cert(cms, x, tflags);
    833             if (ri == NULL)
    834                 goto end;
    835             if (kparam != NULL) {
    836                 EVP_PKEY_CTX *pctx;
    837                 pctx = CMS_RecipientInfo_get0_pkey_ctx(ri);
    838                 if (!cms_set_pkey_param(pctx, kparam->param))
    839                     goto end;
    840             }
    841             if (CMS_RecipientInfo_type(ri) == CMS_RECIPINFO_AGREE
    842                 && wrap_cipher) {
    843                 EVP_CIPHER_CTX *wctx;
    844                 wctx = CMS_RecipientInfo_kari_get0_ctx(ri);
    845                 EVP_EncryptInit_ex(wctx, wrap_cipher, NULL, NULL, NULL);
    846             }
    847         }
    848 
    849         if (secret_key != NULL) {
    850             if (!CMS_add0_recipient_key(cms, NID_undef,
    851                                         secret_key, secret_keylen,
    852                                         secret_keyid, secret_keyidlen,
    853                                         NULL, NULL, NULL))
    854                 goto end;
    855             /* NULL these because call absorbs them */
    856             secret_key = NULL;
    857             secret_keyid = NULL;
    858         }
    859         if (pwri_pass != NULL) {
    860             pwri_tmp = (unsigned char *)OPENSSL_strdup((char *)pwri_pass);
    861             if (pwri_tmp == NULL)
    862                 goto end;
    863             if (CMS_add0_recipient_password(cms,
    864                                             -1, NID_undef, NID_undef,
    865                                             pwri_tmp, -1, NULL) == NULL)
    866                 goto end;
    867             pwri_tmp = NULL;
    868         }
    869         if (!(flags & CMS_STREAM)) {
    870             if (!CMS_final(cms, in, NULL, flags))
    871                 goto end;
    872         }
    873     } else if (operation == SMIME_ENCRYPTED_ENCRYPT) {
    874         cms = CMS_EncryptedData_encrypt(in, cipher,
    875                                         secret_key, secret_keylen, flags);
    876 
    877     } else if (operation == SMIME_SIGN_RECEIPT) {
    878         CMS_ContentInfo *srcms = NULL;
    879         STACK_OF(CMS_SignerInfo) *sis;
    880         CMS_SignerInfo *si;
    881         sis = CMS_get0_SignerInfos(cms);
    882         if (sis == NULL)
    883             goto end;
    884         si = sk_CMS_SignerInfo_value(sis, 0);
    885         srcms = CMS_sign_receipt(si, signer, key, other, flags);
    886         if (srcms == NULL)
    887             goto end;
    888         CMS_ContentInfo_free(cms);
    889         cms = srcms;
    890     } else if (operation & SMIME_SIGNERS) {
    891         int i;
    892         /*
    893          * If detached data content we enable streaming if S/MIME output
    894          * format.
    895          */
    896         if (operation == SMIME_SIGN) {
    897 
    898             if (flags & CMS_DETACHED) {
    899                 if (outformat == FORMAT_SMIME)
    900                     flags |= CMS_STREAM;
    901             }
    902             flags |= CMS_PARTIAL;
    903             cms = CMS_sign(NULL, NULL, other, in, flags);
    904             if (cms == NULL)
    905                 goto end;
    906             if (econtent_type != NULL)
    907                 CMS_set1_eContentType(cms, econtent_type);
    908 
    909             if (rr_to != NULL) {
    910                 rr = make_receipt_request(rr_to, rr_allorfirst, rr_from);
    911                 if (rr == NULL) {
    912                     BIO_puts(bio_err,
    913                              "Signed Receipt Request Creation Error\n");
    914                     goto end;
    915                 }
    916             }
    917         } else {
    918             flags |= CMS_REUSE_DIGEST;
    919         }
    920         for (i = 0; i < sk_OPENSSL_STRING_num(sksigners); i++) {
    921             CMS_SignerInfo *si;
    922             cms_key_param *kparam;
    923             int tflags = flags;
    924             signerfile = sk_OPENSSL_STRING_value(sksigners, i);
    925             keyfile = sk_OPENSSL_STRING_value(skkeys, i);
    926 
    927             signer = load_cert(signerfile, FORMAT_PEM, "signer certificate");
    928             if (signer == NULL) {
    929                 ret = 2;
    930                 goto end;
    931             }
    932             key = load_key(keyfile, keyform, 0, passin, e, "signing key file");
    933             if (key == NULL) {
    934                 ret = 2;
    935                 goto end;
    936             }
    937             for (kparam = key_first; kparam; kparam = kparam->next) {
    938                 if (kparam->idx == i) {
    939                     tflags |= CMS_KEY_PARAM;
    940                     break;
    941                 }
    942             }
    943             si = CMS_add1_signer(cms, signer, key, sign_md, tflags);
    944             if (si == NULL)
    945                 goto end;
    946             if (kparam != NULL) {
    947                 EVP_PKEY_CTX *pctx;
    948                 pctx = CMS_SignerInfo_get0_pkey_ctx(si);
    949                 if (!cms_set_pkey_param(pctx, kparam->param))
    950                     goto end;
    951             }
    952             if (rr != NULL && !CMS_add1_ReceiptRequest(si, rr))
    953                 goto end;
    954             X509_free(signer);
    955             signer = NULL;
    956             EVP_PKEY_free(key);
    957             key = NULL;
    958         }
    959         /* If not streaming or resigning finalize structure */
    960         if ((operation == SMIME_SIGN) && !(flags & CMS_STREAM)) {
    961             if (!CMS_final(cms, in, NULL, flags))
    962                 goto end;
    963         }
    964     }
    965 
    966     if (cms == NULL) {
    967         BIO_printf(bio_err, "Error creating CMS structure\n");
    968         goto end;
    969     }
    970 
    971     ret = 4;
    972     if (operation == SMIME_DECRYPT) {
    973         if (flags & CMS_DEBUG_DECRYPT)
    974             CMS_decrypt(cms, NULL, NULL, NULL, NULL, flags);
    975 
    976         if (secret_key != NULL) {
    977             if (!CMS_decrypt_set1_key(cms,
    978                                       secret_key, secret_keylen,
    979                                       secret_keyid, secret_keyidlen)) {
    980                 BIO_puts(bio_err, "Error decrypting CMS using secret key\n");
    981                 goto end;
    982             }
    983         }
    984 
    985         if (key != NULL) {
    986             if (!CMS_decrypt_set1_pkey(cms, key, recip)) {
    987                 BIO_puts(bio_err, "Error decrypting CMS using private key\n");
    988                 goto end;
    989             }
    990         }
    991 
    992         if (pwri_pass != NULL) {
    993             if (!CMS_decrypt_set1_password(cms, pwri_pass, -1)) {
    994                 BIO_puts(bio_err, "Error decrypting CMS using password\n");
    995                 goto end;
    996             }
    997         }
    998 
    999         if (!CMS_decrypt(cms, NULL, NULL, indata, out, flags)) {
   1000             BIO_printf(bio_err, "Error decrypting CMS structure\n");
   1001             goto end;
   1002         }
   1003     } else if (operation == SMIME_DATAOUT) {
   1004         if (!CMS_data(cms, out, flags))
   1005             goto end;
   1006     } else if (operation == SMIME_UNCOMPRESS) {
   1007         if (!CMS_uncompress(cms, indata, out, flags))
   1008             goto end;
   1009     } else if (operation == SMIME_DIGEST_VERIFY) {
   1010         if (CMS_digest_verify(cms, indata, out, flags) > 0) {
   1011             BIO_printf(bio_err, "Verification successful\n");
   1012         } else {
   1013             BIO_printf(bio_err, "Verification failure\n");
   1014             goto end;
   1015         }
   1016     } else if (operation == SMIME_ENCRYPTED_DECRYPT) {
   1017         if (!CMS_EncryptedData_decrypt(cms, secret_key, secret_keylen,
   1018                                        indata, out, flags))
   1019             goto end;
   1020     } else if (operation == SMIME_VERIFY) {
   1021         if (CMS_verify(cms, other, store, indata, out, flags) > 0) {
   1022             BIO_printf(bio_err, "Verification successful\n");
   1023         } else {
   1024             BIO_printf(bio_err, "Verification failure\n");
   1025             if (verify_retcode)
   1026                 ret = verify_err + 32;
   1027             goto end;
   1028         }
   1029         if (signerfile != NULL) {
   1030             STACK_OF(X509) *signers;
   1031             signers = CMS_get0_signers(cms);
   1032             if (!save_certs(signerfile, signers)) {
   1033                 BIO_printf(bio_err,
   1034                            "Error writing signers to %s\n", signerfile);
   1035                 ret = 5;
   1036                 goto end;
   1037             }
   1038             sk_X509_free(signers);
   1039         }
   1040         if (rr_print)
   1041             receipt_request_print(cms);
   1042 
   1043     } else if (operation == SMIME_VERIFY_RECEIPT) {
   1044         if (CMS_verify_receipt(rcms, cms, other, store, flags) > 0) {
   1045             BIO_printf(bio_err, "Verification successful\n");
   1046         } else {
   1047             BIO_printf(bio_err, "Verification failure\n");
   1048             goto end;
   1049         }
   1050     } else {
   1051         if (noout) {
   1052             if (print)
   1053                 CMS_ContentInfo_print_ctx(out, cms, 0, NULL);
   1054         } else if (outformat == FORMAT_SMIME) {
   1055             if (to)
   1056                 BIO_printf(out, "To: %s%s", to, mime_eol);
   1057             if (from)
   1058                 BIO_printf(out, "From: %s%s", from, mime_eol);
   1059             if (subject)
   1060                 BIO_printf(out, "Subject: %s%s", subject, mime_eol);
   1061             if (operation == SMIME_RESIGN)
   1062                 ret = SMIME_write_CMS(out, cms, indata, flags);
   1063             else
   1064                 ret = SMIME_write_CMS(out, cms, in, flags);
   1065         } else if (outformat == FORMAT_PEM) {
   1066             ret = PEM_write_bio_CMS_stream(out, cms, in, flags);
   1067         } else if (outformat == FORMAT_ASN1) {
   1068             ret = i2d_CMS_bio_stream(out, cms, in, flags);
   1069         } else {
   1070             BIO_printf(bio_err, "Bad output format for CMS file\n");
   1071             goto end;
   1072         }
   1073         if (ret <= 0) {
   1074             ret = 6;
   1075             goto end;
   1076         }
   1077     }
   1078     ret = 0;
   1079  end:
   1080     if (ret)
   1081         ERR_print_errors(bio_err);
   1082     sk_X509_pop_free(encerts, X509_free);
   1083     sk_X509_pop_free(other, X509_free);
   1084     X509_VERIFY_PARAM_free(vpm);
   1085     sk_OPENSSL_STRING_free(sksigners);
   1086     sk_OPENSSL_STRING_free(skkeys);
   1087     OPENSSL_free(secret_key);
   1088     OPENSSL_free(secret_keyid);
   1089     OPENSSL_free(pwri_tmp);
   1090     ASN1_OBJECT_free(econtent_type);
   1091     CMS_ReceiptRequest_free(rr);
   1092     sk_OPENSSL_STRING_free(rr_to);
   1093     sk_OPENSSL_STRING_free(rr_from);
   1094     for (key_param = key_first; key_param;) {
   1095         cms_key_param *tparam;
   1096         sk_OPENSSL_STRING_free(key_param->param);
   1097         tparam = key_param->next;
   1098         OPENSSL_free(key_param);
   1099         key_param = tparam;
   1100     }
   1101     X509_STORE_free(store);
   1102     X509_free(cert);
   1103     X509_free(recip);
   1104     X509_free(signer);
   1105     EVP_PKEY_free(key);
   1106     CMS_ContentInfo_free(cms);
   1107     CMS_ContentInfo_free(rcms);
   1108     release_engine(e);
   1109     BIO_free(rctin);
   1110     BIO_free(in);
   1111     BIO_free(indata);
   1112     BIO_free_all(out);
   1113     OPENSSL_free(passin);
   1114     return ret;
   1115 }
   1116 
   1117 static int save_certs(char *signerfile, STACK_OF(X509) *signers)
   1118 {
   1119     int i;
   1120     BIO *tmp;
   1121     if (signerfile == NULL)
   1122         return 1;
   1123     tmp = BIO_new_file(signerfile, "w");
   1124     if (tmp == NULL)
   1125         return 0;
   1126     for (i = 0; i < sk_X509_num(signers); i++)
   1127         PEM_write_bio_X509(tmp, sk_X509_value(signers, i));
   1128     BIO_free(tmp);
   1129     return 1;
   1130 }
   1131 
   1132 /* Minimal callback just to output policy info (if any) */
   1133 
   1134 static int cms_cb(int ok, X509_STORE_CTX *ctx)
   1135 {
   1136     int error;
   1137 
   1138     error = X509_STORE_CTX_get_error(ctx);
   1139 
   1140     verify_err = error;
   1141 
   1142     if ((error != X509_V_ERR_NO_EXPLICIT_POLICY)
   1143         && ((error != X509_V_OK) || (ok != 2)))
   1144         return ok;
   1145 
   1146     policies_print(ctx);
   1147 
   1148     return ok;
   1149 
   1150 }
   1151 
   1152 static void gnames_stack_print(STACK_OF(GENERAL_NAMES) *gns)
   1153 {
   1154     STACK_OF(GENERAL_NAME) *gens;
   1155     GENERAL_NAME *gen;
   1156     int i, j;
   1157 
   1158     for (i = 0; i < sk_GENERAL_NAMES_num(gns); i++) {
   1159         gens = sk_GENERAL_NAMES_value(gns, i);
   1160         for (j = 0; j < sk_GENERAL_NAME_num(gens); j++) {
   1161             gen = sk_GENERAL_NAME_value(gens, j);
   1162             BIO_puts(bio_err, "    ");
   1163             GENERAL_NAME_print(bio_err, gen);
   1164             BIO_puts(bio_err, "\n");
   1165         }
   1166     }
   1167     return;
   1168 }
   1169 
   1170 static void receipt_request_print(CMS_ContentInfo *cms)
   1171 {
   1172     STACK_OF(CMS_SignerInfo) *sis;
   1173     CMS_SignerInfo *si;
   1174     CMS_ReceiptRequest *rr;
   1175     int allorfirst;
   1176     STACK_OF(GENERAL_NAMES) *rto, *rlist;
   1177     ASN1_STRING *scid;
   1178     int i, rv;
   1179     sis = CMS_get0_SignerInfos(cms);
   1180     for (i = 0; i < sk_CMS_SignerInfo_num(sis); i++) {
   1181         si = sk_CMS_SignerInfo_value(sis, i);
   1182         rv = CMS_get1_ReceiptRequest(si, &rr);
   1183         BIO_printf(bio_err, "Signer %d:\n", i + 1);
   1184         if (rv == 0) {
   1185             BIO_puts(bio_err, "  No Receipt Request\n");
   1186         } else if (rv < 0) {
   1187             BIO_puts(bio_err, "  Receipt Request Parse Error\n");
   1188             ERR_print_errors(bio_err);
   1189         } else {
   1190             const char *id;
   1191             int idlen;
   1192             CMS_ReceiptRequest_get0_values(rr, &scid, &allorfirst,
   1193                                            &rlist, &rto);
   1194             BIO_puts(bio_err, "  Signed Content ID:\n");
   1195             idlen = ASN1_STRING_length(scid);
   1196             id = (const char *)ASN1_STRING_get0_data(scid);
   1197             BIO_dump_indent(bio_err, id, idlen, 4);
   1198             BIO_puts(bio_err, "  Receipts From");
   1199             if (rlist != NULL) {
   1200                 BIO_puts(bio_err, " List:\n");
   1201                 gnames_stack_print(rlist);
   1202             } else if (allorfirst == 1) {
   1203                 BIO_puts(bio_err, ": First Tier\n");
   1204             } else if (allorfirst == 0) {
   1205                 BIO_puts(bio_err, ": All\n");
   1206             } else {
   1207                 BIO_printf(bio_err, " Unknown (%d)\n", allorfirst);
   1208             }
   1209             BIO_puts(bio_err, "  Receipts To:\n");
   1210             gnames_stack_print(rto);
   1211         }
   1212         CMS_ReceiptRequest_free(rr);
   1213     }
   1214 }
   1215 
   1216 static STACK_OF(GENERAL_NAMES) *make_names_stack(STACK_OF(OPENSSL_STRING) *ns)
   1217 {
   1218     int i;
   1219     STACK_OF(GENERAL_NAMES) *ret;
   1220     GENERAL_NAMES *gens = NULL;
   1221     GENERAL_NAME *gen = NULL;
   1222     ret = sk_GENERAL_NAMES_new_null();
   1223     if (ret == NULL)
   1224         goto err;
   1225     for (i = 0; i < sk_OPENSSL_STRING_num(ns); i++) {
   1226         char *str = sk_OPENSSL_STRING_value(ns, i);
   1227         gen = a2i_GENERAL_NAME(NULL, NULL, NULL, GEN_EMAIL, str, 0);
   1228         if (gen == NULL)
   1229             goto err;
   1230         gens = GENERAL_NAMES_new();
   1231         if (gens == NULL)
   1232             goto err;
   1233         if (!sk_GENERAL_NAME_push(gens, gen))
   1234             goto err;
   1235         gen = NULL;
   1236         if (!sk_GENERAL_NAMES_push(ret, gens))
   1237             goto err;
   1238         gens = NULL;
   1239     }
   1240 
   1241     return ret;
   1242 
   1243  err:
   1244     sk_GENERAL_NAMES_pop_free(ret, GENERAL_NAMES_free);
   1245     GENERAL_NAMES_free(gens);
   1246     GENERAL_NAME_free(gen);
   1247     return NULL;
   1248 }
   1249 
   1250 static CMS_ReceiptRequest *make_receipt_request(STACK_OF(OPENSSL_STRING)
   1251                                                 *rr_to, int rr_allorfirst, STACK_OF(OPENSSL_STRING)
   1252                                                 *rr_from)
   1253 {
   1254     STACK_OF(GENERAL_NAMES) *rct_to = NULL, *rct_from = NULL;
   1255     CMS_ReceiptRequest *rr;
   1256     rct_to = make_names_stack(rr_to);
   1257     if (rct_to == NULL)
   1258         goto err;
   1259     if (rr_from != NULL) {
   1260         rct_from = make_names_stack(rr_from);
   1261         if (rct_from == NULL)
   1262             goto err;
   1263     } else {
   1264         rct_from = NULL;
   1265     }
   1266     rr = CMS_ReceiptRequest_create0(NULL, -1, rr_allorfirst, rct_from,
   1267                                     rct_to);
   1268     return rr;
   1269  err:
   1270     sk_GENERAL_NAMES_pop_free(rct_to, GENERAL_NAMES_free);
   1271     return NULL;
   1272 }
   1273 
   1274 static int cms_set_pkey_param(EVP_PKEY_CTX *pctx,
   1275                               STACK_OF(OPENSSL_STRING) *param)
   1276 {
   1277     char *keyopt;
   1278     int i;
   1279     if (sk_OPENSSL_STRING_num(param) <= 0)
   1280         return 1;
   1281     for (i = 0; i < sk_OPENSSL_STRING_num(param); i++) {
   1282         keyopt = sk_OPENSSL_STRING_value(param, i);
   1283         if (pkey_ctrl_string(pctx, keyopt) <= 0) {
   1284             BIO_printf(bio_err, "parameter error \"%s\"\n", keyopt);
   1285             ERR_print_errors(bio_err);
   1286             return 0;
   1287         }
   1288     }
   1289     return 1;
   1290 }
   1291 
   1292 #endif
   1293