/*

 * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <openssl/opensslconf.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "apps.h"

#include "progs.h"

#include <openssl/crypto.h>

#include <openssl/err.h>

#include <openssl/pem.h>

#include <openssl/pkcs12.h>

#define NOKEYS          0x1

#define NOCERTS         0x2

#define INFO            0x4

#define CLCERTS         0x8

#define CACERTS         0x10

#define PASSWD_BUF_SIZE 2048

static int get_cert_chain(X509 *cert, X509_STORE *store,

                          STACK_OF(X509) **chain);

int dump_certs_keys_p12(BIO *out, const PKCS12 *p12,

                        const char *pass, int passlen, int options,

                        char *pempass, const EVP_CIPHER *enc);

int dump_certs_pkeys_bags(BIO *out, const STACK_OF(PKCS12_SAFEBAG) *bags,

                          const char *pass, int passlen, int options,

                          char *pempass, const EVP_CIPHER *enc);

int dump_certs_pkeys_bag(BIO *out, const PKCS12_SAFEBAG *bags,

                         const char *pass, int passlen,

                         int options, char *pempass, const EVP_CIPHER *enc);

void print_attribute(BIO *out, const ASN1_TYPE *av);

int print_attribs(BIO *out, const STACK_OF(X509_ATTRIBUTE) *attrlst,

                  const char *name);

void hex_prin(BIO *out, unsigned char *buf, int len);

static int alg_print(const X509_ALGOR *alg);

int cert_load(BIO *in, STACK_OF(X509) *sk);

static int set_pbe(int *ppbe, const char *str);

typedef enum OPTION_choice {

    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,

    OPT_CIPHER, OPT_NOKEYS, OPT_KEYEX, OPT_KEYSIG, OPT_NOCERTS, OPT_CLCERTS,

    OPT_CACERTS, OPT_NOOUT, OPT_INFO, OPT_CHAIN, OPT_TWOPASS, OPT_NOMACVER,

    OPT_DESCERT, OPT_EXPORT, OPT_NOITER, OPT_MACITER, OPT_NOMACITER,

    OPT_NOMAC, OPT_LMK, OPT_NODES, OPT_MACALG, OPT_CERTPBE, OPT_KEYPBE,

    OPT_INKEY, OPT_CERTFILE, OPT_NAME, OPT_CSP, OPT_CANAME,

    OPT_IN, OPT_OUT, OPT_PASSIN, OPT_PASSOUT, OPT_PASSWORD, OPT_CAPATH,

    OPT_CAFILE, OPT_NOCAPATH, OPT_NOCAFILE, OPT_ENGINE,

    OPT_R_ENUM

} OPTION_CHOICE;

const OPTIONS pkcs12_options[] = {

    {"help", OPT_HELP, '-', "Display this summary"},

    {"nokeys", OPT_NOKEYS, '-', "Don't output private keys"},

    {"keyex", OPT_KEYEX, '-', "Set MS key exchange type"},

    {"keysig", OPT_KEYSIG, '-', "Set MS key signature type"},

    {"nocerts", OPT_NOCERTS, '-', "Don't output certificates"},

    {"clcerts", OPT_CLCERTS, '-', "Only output client certificates"},

    {"cacerts", OPT_CACERTS, '-', "Only output CA certificates"},

    {"noout", OPT_NOOUT, '-', "Don't output anything, just verify"},

    {"info", OPT_INFO, '-', "Print info about PKCS#12 structure"},

    {"chain", OPT_CHAIN, '-', "Add certificate chain"},

    {"twopass", OPT_TWOPASS, '-', "Separate MAC, encryption passwords"},

    {"nomacver", OPT_NOMACVER, '-', "Don't verify MAC"},

#ifndef OPENSSL_NO_RC2

    {"descert", OPT_DESCERT, '-',

     "Encrypt output with 3DES (default RC2-40)"},

    {"certpbe", OPT_CERTPBE, 's',

     "Certificate PBE algorithm (default RC2-40)"},

#else

    {"descert", OPT_DESCERT, '-', "Encrypt output with 3DES (the default)"},

    {"certpbe", OPT_CERTPBE, 's', "Certificate PBE algorithm (default 3DES)"},

#endif

    {"export", OPT_EXPORT, '-', "Output PKCS12 file"},

    {"noiter", OPT_NOITER, '-', "Don't use encryption iteration"},

    {"maciter", OPT_MACITER, '-', "Use MAC iteration"},

    {"nomaciter", OPT_NOMACITER, '-', "Don't use MAC iteration"},

    {"nomac", OPT_NOMAC, '-', "Don't generate MAC"},

    {"LMK", OPT_LMK, '-',

     "Add local machine keyset attribute to private key"},

    {"nodes", OPT_NODES, '-', "Don't encrypt private keys"},

    {"macalg", OPT_MACALG, 's',

     "Digest algorithm used in MAC (default SHA1)"},

    {"keypbe", OPT_KEYPBE, 's', "Private key PBE algorithm (default 3DES)"},

    OPT_R_OPTIONS,

    {"inkey", OPT_INKEY, 's', "Private key if not infile"},

    {"certfile", OPT_CERTFILE, '<', "Load certs from file"},

    {"name", OPT_NAME, 's', "Use name as friendly name"},

    {"CSP", OPT_CSP, 's', "Microsoft CSP name"},

    {"caname", OPT_CANAME, 's',

     "Use name as CA friendly name (can be repeated)"},

    {"in", OPT_IN, '<', "Input filename"},

    {"out", OPT_OUT, '>', "Output filename"},

    {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},

    {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},

    {"password", OPT_PASSWORD, 's', "Set import/export password source"},

    {"CApath", OPT_CAPATH, '/', "PEM-format directory of CA's"},

    {"CAfile", OPT_CAFILE, '<', "PEM-format file of CA's"},

    {"no-CAfile", OPT_NOCAFILE, '-',

     "Do not load the default certificates file"},

    {"no-CApath", OPT_NOCAPATH, '-',

     "Do not load certificates from the default certificates directory"},

    {"", OPT_CIPHER, '-', "Any supported cipher"},

#ifndef OPENSSL_NO_ENGINE

    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},

#endif

    {NULL}

};

int pkcs12_main(int argc, char **argv)

{

    char *infile = NULL, *outfile = NULL, *keyname = NULL, *certfile = NULL;

    char *name = NULL, *csp_name = NULL;

    char pass[PASSWD_BUF_SIZE] = "", macpass[PASSWD_BUF_SIZE] = "";

    int export_cert = 0, options = 0, chain = 0, twopass = 0, keytype = 0;

    int iter = PKCS12_DEFAULT_ITER, maciter = PKCS12_DEFAULT_ITER;

#ifndef OPENSSL_NO_RC2

    int cert_pbe = FIPS_mode() ? NID_pbe_WithSHA1And3_Key_TripleDES_CBC : NID_pbe_WithSHA1And40BitRC2_CBC;

#else

    int cert_pbe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;

#endif

    int key_pbe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;

    int ret = 1, macver = 1, add_lmk = 0, private = 0;

    int noprompt = 0;

    char *passinarg = NULL, *passoutarg = NULL, *passarg = NULL;

    char *passin = NULL, *passout = NULL, *macalg = NULL;

    char *cpass = NULL, *mpass = NULL, *badpass = NULL;

    const char *CApath = NULL, *CAfile = NULL, *prog;

    int noCApath = 0, noCAfile = 0;

    ENGINE *e = NULL;

    BIO *in = NULL, *out = NULL;

    PKCS12 *p12 = NULL;

    STACK_OF(OPENSSL_STRING) *canames = NULL;

    const EVP_CIPHER *enc = EVP_des_ede3_cbc();

    OPTION_CHOICE o;

    prog = opt_init(argc, argv, pkcs12_options);

    while ((o = opt_next()) != OPT_EOF) {

        switch (o) {

        case OPT_EOF:

        case OPT_ERR:

 opthelp:

            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);

            goto end;

        case OPT_HELP:

            opt_help(pkcs12_options);

            ret = 0;

            goto end;

        case OPT_NOKEYS:

            options |= NOKEYS;

            break;

        case OPT_KEYEX:

            keytype = KEY_EX;

            break;

        case OPT_KEYSIG:

            keytype = KEY_SIG;

            break;

        case OPT_NOCERTS:

            options |= NOCERTS;

            break;

        case OPT_CLCERTS:

            options |= CLCERTS;

            break;

        case OPT_CACERTS:

            options |= CACERTS;

            break;

        case OPT_NOOUT:

            options |= (NOKEYS | NOCERTS);

            break;

        case OPT_INFO:

            options |= INFO;

            break;

        case OPT_CHAIN:

            chain = 1;

            break;

        case OPT_TWOPASS:

            twopass = 1;

            break;

        case OPT_NOMACVER:

            macver = 0;

            break;

        case OPT_DESCERT:

            cert_pbe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;

            break;

        case OPT_EXPORT:

            export_cert = 1;

            break;

        case OPT_CIPHER:

            if (!opt_cipher(opt_unknown(), &enc))

                goto opthelp;

            break;

        case OPT_NOITER:

            iter = 1;

            break;

        case OPT_MACITER:

            maciter = PKCS12_DEFAULT_ITER;

            break;

        case OPT_NOMACITER:

            maciter = 1;

            break;

        case OPT_NOMAC:

            maciter = -1;

            break;

        case OPT_MACALG:

            macalg = opt_arg();

            break;

        case OPT_NODES:

            enc = NULL;

            break;

        case OPT_CERTPBE:

            if (!set_pbe(&cert_pbe, opt_arg()))

                goto opthelp;

            break;

        case OPT_KEYPBE:

            if (!set_pbe(&key_pbe, opt_arg()))

                goto opthelp;

            break;

        case OPT_R_CASES:

            if (!opt_rand(o))

                goto end;

            break;

        case OPT_INKEY:

            keyname = opt_arg();

            break;

        case OPT_CERTFILE:

            certfile = opt_arg();

            break;

        case OPT_NAME:

            name = opt_arg();

            break;

        case OPT_LMK:

            add_lmk = 1;

            break;

        case OPT_CSP:

            csp_name = opt_arg();

            break;

        case OPT_CANAME:

            if (canames == NULL

                && (canames = sk_OPENSSL_STRING_new_null()) == NULL)

                goto end;

            sk_OPENSSL_STRING_push(canames, opt_arg());

            break;

        case OPT_IN:

            infile = opt_arg();

            break;

        case OPT_OUT:

            outfile = opt_arg();

            break;

        case OPT_PASSIN:

            passinarg = opt_arg();

            break;

        case OPT_PASSOUT:

            passoutarg = opt_arg();

            break;

        case OPT_PASSWORD:

            passarg = opt_arg();

            break;

        case OPT_CAPATH:

            CApath = opt_arg();

            break;

        case OPT_CAFILE:

            CAfile = opt_arg();

            break;

        case OPT_NOCAPATH:

            noCApath = 1;

            break;

        case OPT_NOCAFILE:

            noCAfile = 1;

            break;

        case OPT_ENGINE:

            e = setup_engine(opt_arg(), 0);

            break;

        }

    }

    argc = opt_num_rest();

    if (argc != 0)

        goto opthelp;

    private = 1;

    if (passarg != NULL) {

        if (export_cert)

            passoutarg = passarg;

        else

            passinarg = passarg;

    }

    if (!app_passwd(passinarg, passoutarg, &passin, &passout)) {

        BIO_printf(bio_err, "Error getting passwords\n");

        goto end;

    }

    if (cpass == NULL) {

        if (export_cert)

            cpass = passout;

        else

            cpass = passin;

    }

    if (cpass != NULL) {

        mpass = cpass;

        noprompt = 1;

        if (twopass) {

            if (export_cert)

                BIO_printf(bio_err, "Option -twopass cannot be used with -passout or -password\n");

            else

                BIO_printf(bio_err, "Option -twopass cannot be used with -passin or -password\n");

            goto end;

        }

    } else {

        cpass = pass;

        mpass = macpass;

    }

    if (twopass) {

        /* To avoid bit rot */

        if (1) {

#ifndef OPENSSL_NO_UI_CONSOLE

            if (EVP_read_pw_string(

                macpass, sizeof(macpass), "Enter MAC Password:", export_cert)) {

                BIO_printf(bio_err, "Can't read Password\n");

                goto end;

            }

        } else {

#endif

            BIO_printf(bio_err, "Unsupported option -twopass\n");

            goto end;

        }

    }

    if (export_cert) {

        EVP_PKEY *key = NULL;

        X509 *ucert = NULL, *x = NULL;

        STACK_OF(X509) *certs = NULL;

        const EVP_MD *macmd = NULL;

        unsigned char *catmp = NULL;

        int i;

        if ((options & (NOCERTS | NOKEYS)) == (NOCERTS | NOKEYS)) {

            BIO_printf(bio_err, "Nothing to do!\n");

            goto export_end;

        }

        if (options & NOCERTS)

            chain = 0;

        if (!(options & NOKEYS)) {

            key = load_key(keyname ? keyname : infile,

                           FORMAT_PEM, 1, passin, e, "private key");

            if (key == NULL)

                goto export_end;

        }

        /* Load in all certs in input file */

        if (!(options & NOCERTS)) {

            if (!load_certs(infile, &certs, FORMAT_PEM, NULL,

                            "certificates"))

                goto export_end;

            if (key != NULL) {

                /* Look for matching private key */

                for (i = 0; i < sk_X509_num(certs); i++) {

                    x = sk_X509_value(certs, i);

                    if (X509_check_private_key(x, key)) {

                        ucert = x;

                        /* Zero keyid and alias */

                        X509_keyid_set1(ucert, NULL, 0);

                        X509_alias_set1(ucert, NULL, 0);

                        /* Remove from list */

                        (void)sk_X509_delete(certs, i);

                        break;

                    }

                }

                if (ucert == NULL) {

                    BIO_printf(bio_err,

                               "No certificate matches private key\n");

                    goto export_end;

                }

            }

        }

        /* Add any more certificates asked for */

        if (certfile != NULL) {

            if (!load_certs(certfile, &certs, FORMAT_PEM, NULL,

                            "certificates from certfile"))

                goto export_end;

        }

        /* If chaining get chain from user cert */

        if (chain) {

            int vret;

            STACK_OF(X509) *chain2;

            X509_STORE *store;

            if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath))

                    == NULL)

                goto export_end;

            vret = get_cert_chain(ucert, store, &chain2);

            X509_STORE_free(store);

            if (vret == X509_V_OK) {

                /* Exclude verified certificate */

                for (i = 1; i < sk_X509_num(chain2); i++)

                    sk_X509_push(certs, sk_X509_value(chain2, i));

                /* Free first certificate */

                X509_free(sk_X509_value(chain2, 0));

                sk_X509_free(chain2);

            } else {

                if (vret != X509_V_ERR_UNSPECIFIED)

                    BIO_printf(bio_err, "Error %s getting chain.\n",

                               X509_verify_cert_error_string(vret));

                else

                    ERR_print_errors(bio_err);

                goto export_end;

            }

        }

        /* Add any CA names */

        for (i = 0; i < sk_OPENSSL_STRING_num(canames); i++) {

            catmp = (unsigned char *)sk_OPENSSL_STRING_value(canames, i);

            X509_alias_set1(sk_X509_value(certs, i), catmp, -1);

        }

        if (csp_name != NULL && key != NULL)

            EVP_PKEY_add1_attr_by_NID(key, NID_ms_csp_name,

                                      MBSTRING_ASC, (unsigned char *)csp_name,

                                      -1);

        if (add_lmk && key != NULL)

            EVP_PKEY_add1_attr_by_NID(key, NID_LocalKeySet, 0, NULL, -1);

        if (!noprompt) {

            /* To avoid bit rot */

            if (1) {

#ifndef OPENSSL_NO_UI_CONSOLE

                if (EVP_read_pw_string(pass, sizeof(pass),

                                       "Enter Export Password:", 1)) {

                    BIO_printf(bio_err, "Can't read Password\n");

                    goto export_end;

                }

            } else {

#endif

                BIO_printf(bio_err, "Password required\n");

                goto export_end;

            }

        }

        if (!twopass)

            OPENSSL_strlcpy(macpass, pass, sizeof(macpass));

        p12 = PKCS12_create(cpass, name, key, ucert, certs,

                            key_pbe, cert_pbe, iter, -1, keytype);

        if (!p12) {

            ERR_print_errors(bio_err);

            goto export_end;

        }

        if (macalg) {

            if (!opt_md(macalg, &macmd))

                goto opthelp;

        }

        if (maciter != -1)

            PKCS12_set_mac(p12, mpass, -1, NULL, 0, maciter, macmd);

        assert(private);

        out = bio_open_owner(outfile, FORMAT_PKCS12, private);

        if (out == NULL)

            goto end;

        i2d_PKCS12_bio(out, p12);

        ret = 0;

 export_end:

        EVP_PKEY_free(key);

        sk_X509_pop_free(certs, X509_free);

        X509_free(ucert);

        goto end;

    }

    in = bio_open_default(infile, 'r', FORMAT_PKCS12);

    if (in == NULL)

        goto end;

    out = bio_open_owner(outfile, FORMAT_PEM, private);

    if (out == NULL)

        goto end;

    if ((p12 = d2i_PKCS12_bio(in, NULL)) == NULL) {

        ERR_print_errors(bio_err);

        goto end;

    }

    if (!noprompt) {

        if (1) {

#ifndef OPENSSL_NO_UI_CONSOLE

            if (EVP_read_pw_string(pass, sizeof(pass), "Enter Import Password:",

                                   0)) {

                BIO_printf(bio_err, "Can't read Password\n");

                goto end;

            }

        } else {

#endif

            BIO_printf(bio_err, "Password required\n");

            goto end;

        }

    }

    if (!twopass)

        OPENSSL_strlcpy(macpass, pass, sizeof(macpass));

    if ((options & INFO) && PKCS12_mac_present(p12)) {

        const ASN1_INTEGER *tmaciter;

        const X509_ALGOR *macalgid;

        const ASN1_OBJECT *macobj;

        const ASN1_OCTET_STRING *tmac;

        const ASN1_OCTET_STRING *tsalt;

        PKCS12_get0_mac(&tmac, &macalgid, &tsalt, &tmaciter, p12);

        /* current hash algorithms do not use parameters so extract just name,

           in future alg_print() may be needed */

        X509_ALGOR_get0(&macobj, NULL, NULL, macalgid);

        BIO_puts(bio_err, "MAC: ");

        i2a_ASN1_OBJECT(bio_err, macobj);

        BIO_printf(bio_err, ", Iteration %ld\n",

                   tmaciter != NULL ? ASN1_INTEGER_get(tmaciter) : 1L);

        BIO_printf(bio_err, "MAC length: %ld, salt length: %ld\n",

                   tmac != NULL ? ASN1_STRING_length(tmac) : 0L,

                   tsalt != NULL ? ASN1_STRING_length(tsalt) : 0L);

    }

    if (macver) {

        /* If we enter empty password try no password first */

        if (!mpass[0] && PKCS12_verify_mac(p12, NULL, 0)) {

            /* If mac and crypto pass the same set it to NULL too */

            if (!twopass)

                cpass = NULL;

        } else if (!PKCS12_verify_mac(p12, mpass, -1)) {

            /*

             * May be UTF8 from previous version of OpenSSL:

             * convert to a UTF8 form which will translate

             * to the same Unicode password.

             */

            unsigned char *utmp;

            int utmplen;

            utmp = OPENSSL_asc2uni(mpass, -1, NULL, &utmplen);

            if (utmp == NULL)

                goto end;

            badpass = OPENSSL_uni2utf8(utmp, utmplen);

            OPENSSL_free(utmp);

            if (!PKCS12_verify_mac(p12, badpass, -1)) {

                BIO_printf(bio_err, "Mac verify error: invalid password?\n");

                ERR_print_errors(bio_err);

                goto end;

            } else {

                BIO_printf(bio_err, "Warning: using broken algorithm\n");

                if (!twopass)

                    cpass = badpass;

            }

        }

    }

    assert(private);

    if (!dump_certs_keys_p12(out, p12, cpass, -1, options, passout, enc)) {

        BIO_printf(bio_err, "Error outputting keys and certificates\n");

        ERR_print_errors(bio_err);

        goto end;

    }

    ret = 0;

 end:

    PKCS12_free(p12);

    release_engine(e);

    BIO_free(in);

    BIO_free_all(out);

    sk_OPENSSL_STRING_free(canames);

    OPENSSL_free(badpass);

    OPENSSL_free(passin);

    OPENSSL_free(passout);

    return ret;

}

int dump_certs_keys_p12(BIO *out, const PKCS12 *p12, const char *pass,

                        int passlen, int options, char *pempass,

                        const EVP_CIPHER *enc)

{

    STACK_OF(PKCS7) *asafes = NULL;

    STACK_OF(PKCS12_SAFEBAG) *bags;

    int i, bagnid;

    int ret = 0;

    PKCS7 *p7;

    if ((asafes = PKCS12_unpack_authsafes(p12)) == NULL)

        return 0;

    for (i = 0; i < sk_PKCS7_num(asafes); i++) {

        p7 = sk_PKCS7_value(asafes, i);

        bagnid = OBJ_obj2nid(p7->type);

        if (bagnid == NID_pkcs7_data) {

            bags = PKCS12_unpack_p7data(p7);

            if (options & INFO)

                BIO_printf(bio_err, "PKCS7 Data\n");

        } else if (bagnid == NID_pkcs7_encrypted) {

            if (options & INFO) {

                BIO_printf(bio_err, "PKCS7 Encrypted data: ");

                alg_print(p7->d.encrypted->enc_data->algorithm);

            }

            bags = PKCS12_unpack_p7encdata(p7, pass, passlen);

        } else {

            continue;

        }

        if (!bags)

            goto err;

        if (!dump_certs_pkeys_bags(out, bags, pass, passlen,

                                   options, pempass, enc)) {

            sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);

            goto err;

        }

        sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);

        bags = NULL;

    }

    ret = 1;

 err:

    sk_PKCS7_pop_free(asafes, PKCS7_free);

    return ret;

}

int dump_certs_pkeys_bags(BIO *out, const STACK_OF(PKCS12_SAFEBAG) *bags,

                          const char *pass, int passlen, int options,

                          char *pempass, const EVP_CIPHER *enc)

{

    int i;

    for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {

        if (!dump_certs_pkeys_bag(out,

                                  sk_PKCS12_SAFEBAG_value(bags, i),

                                  pass, passlen, options, pempass, enc))

            return 0;

    }

    return 1;

}

int dump_certs_pkeys_bag(BIO *out, const PKCS12_SAFEBAG *bag,

                         const char *pass, int passlen, int options,

                         char *pempass, const EVP_CIPHER *enc)

{

    EVP_PKEY *pkey;

    PKCS8_PRIV_KEY_INFO *p8;

    const PKCS8_PRIV_KEY_INFO *p8c;

    X509 *x509;

    const STACK_OF(X509_ATTRIBUTE) *attrs;

    int ret = 0;

    attrs = PKCS12_SAFEBAG_get0_attrs(bag);

    switch (PKCS12_SAFEBAG_get_nid(bag)) {

    case NID_keyBag:

        if (options & INFO)

            BIO_printf(bio_err, "Key bag\n");

        if (options & NOKEYS)

            return 1;

        print_attribs(out, attrs, "Bag Attributes");

        p8c = PKCS12_SAFEBAG_get0_p8inf(bag);

        if ((pkey = EVP_PKCS82PKEY(p8c)) == NULL)

            return 0;

        print_attribs(out, PKCS8_pkey_get0_attrs(p8c), "Key Attributes");

        ret = PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);

        EVP_PKEY_free(pkey);

        break;

    case NID_pkcs8ShroudedKeyBag:

        if (options & INFO) {

            const X509_SIG *tp8;

            const X509_ALGOR *tp8alg;

            BIO_printf(bio_err, "Shrouded Keybag: ");

            tp8 = PKCS12_SAFEBAG_get0_pkcs8(bag);

            X509_SIG_get0(tp8, &tp8alg, NULL);

            alg_print(tp8alg);

        }

        if (options & NOKEYS)

            return 1;

        print_attribs(out, attrs, "Bag Attributes");

        if ((p8 = PKCS12_decrypt_skey(bag, pass, passlen)) == NULL)

            return 0;

        if ((pkey = EVP_PKCS82PKEY(p8)) == NULL) {

            PKCS8_PRIV_KEY_INFO_free(p8);

            return 0;

        }

        print_attribs(out, PKCS8_pkey_get0_attrs(p8), "Key Attributes");

        PKCS8_PRIV_KEY_INFO_free(p8);

        ret = PEM_write_bio_PrivateKey(out, pkey, enc, NULL, 0, NULL, pempass);

        EVP_PKEY_free(pkey);

        break;

    case NID_certBag:

        if (options & INFO)

            BIO_printf(bio_err, "Certificate bag\n");

        if (options & NOCERTS)

            return 1;

        if (PKCS12_SAFEBAG_get0_attr(bag, NID_localKeyID)) {

            if (options & CACERTS)

                return 1;

        } else if (options & CLCERTS)

            return 1;

        print_attribs(out, attrs, "Bag Attributes");

        if (PKCS12_SAFEBAG_get_bag_nid(bag) != NID_x509Certificate)

            return 1;

        if ((x509 = PKCS12_SAFEBAG_get1_cert(bag)) == NULL)

            return 0;

        dump_cert_text(out, x509);

        ret = PEM_write_bio_X509(out, x509);

        X509_free(x509);

        break;

    case NID_safeContentsBag:

        if (options & INFO)

            BIO_printf(bio_err, "Safe Contents bag\n");

        print_attribs(out, attrs, "Bag Attributes");

        return dump_certs_pkeys_bags(out, PKCS12_SAFEBAG_get0_safes(bag),

                                     pass, passlen, options, pempass, enc);

    default:

        BIO_printf(bio_err, "Warning unsupported bag type: ");

        i2a_ASN1_OBJECT(bio_err, PKCS12_SAFEBAG_get0_type(bag));

        BIO_printf(bio_err, "\n");

        return 1;

    }

    return ret;

}

/* Given a single certificate return a verified chain or NULL if error */

static int get_cert_chain(X509 *cert, X509_STORE *store,

                          STACK_OF(X509) **chain)

{

    X509_STORE_CTX *store_ctx = NULL;

    STACK_OF(X509) *chn = NULL;

    int i = 0;

    store_ctx = X509_STORE_CTX_new();

    if (store_ctx == NULL) {

        i =  X509_V_ERR_UNSPECIFIED;

        goto end;

    }

    if (!X509_STORE_CTX_init(store_ctx, store, cert, NULL)) {

        i =  X509_V_ERR_UNSPECIFIED;

        goto end;

    }

    if (X509_verify_cert(store_ctx) > 0)

        chn = X509_STORE_CTX_get1_chain(store_ctx);

    else if ((i = X509_STORE_CTX_get_error(store_ctx)) == 0)

        i = X509_V_ERR_UNSPECIFIED;

end:

    X509_STORE_CTX_free(store_ctx);

    *chain = chn;

    return i;

}

static int alg_print(const X509_ALGOR *alg)

{

    int pbenid, aparamtype;

    const ASN1_OBJECT *aoid;

    const void *aparam;

    PBEPARAM *pbe = NULL;

    X509_ALGOR_get0(&aoid, &aparamtype, &aparam, alg);

    pbenid = OBJ_obj2nid(aoid);

    BIO_printf(bio_err, "%s", OBJ_nid2ln(pbenid));

    /*

     * If PBE algorithm is PBES2 decode algorithm parameters

     * for additional details.

     */

    if (pbenid == NID_pbes2) {

        PBE2PARAM *pbe2 = NULL;

        int encnid;

        if (aparamtype == V_ASN1_SEQUENCE)

            pbe2 = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBE2PARAM));

        if (pbe2 == NULL) {

            BIO_puts(bio_err, ", <unsupported parameters>");

            goto done;

        }

        X509_ALGOR_get0(&aoid, &aparamtype, &aparam, pbe2->keyfunc);

        pbenid = OBJ_obj2nid(aoid);

        X509_ALGOR_get0(&aoid, NULL, NULL, pbe2->encryption);

        encnid = OBJ_obj2nid(aoid);

        BIO_printf(bio_err, ", %s, %s", OBJ_nid2ln(pbenid),

                   OBJ_nid2sn(encnid));

        /* If KDF is PBKDF2 decode parameters */

        if (pbenid == NID_id_pbkdf2) {

            PBKDF2PARAM *kdf = NULL;

            int prfnid;

            if (aparamtype == V_ASN1_SEQUENCE)

                kdf = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBKDF2PARAM));

            if (kdf == NULL) {

                BIO_puts(bio_err, ", <unsupported parameters>");

                goto done;

            }

            if (kdf->prf == NULL) {

                prfnid = NID_hmacWithSHA1;

            } else {

                X509_ALGOR_get0(&aoid, NULL, NULL, kdf->prf);

                prfnid = OBJ_obj2nid(aoid);

            }

            BIO_printf(bio_err, ", Iteration %ld, PRF %s",

                       ASN1_INTEGER_get(kdf->iter), OBJ_nid2sn(prfnid));

            PBKDF2PARAM_free(kdf);

#ifndef OPENSSL_NO_SCRYPT

        } else if (pbenid == NID_id_scrypt) {

            SCRYPT_PARAMS *kdf = NULL;

            if (aparamtype == V_ASN1_SEQUENCE)

                kdf = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(SCRYPT_PARAMS));

            if (kdf == NULL) {

                BIO_puts(bio_err, ", <unsupported parameters>");

                goto done;

            }

            BIO_printf(bio_err, ", Salt length: %d, Cost(N): %ld, "

                       "Block size(r): %ld, Parallelism(p): %ld",

                       ASN1_STRING_length(kdf->salt),

                       ASN1_INTEGER_get(kdf->costParameter),

                       ASN1_INTEGER_get(kdf->blockSize),

                       ASN1_INTEGER_get(kdf->parallelizationParameter));

            SCRYPT_PARAMS_free(kdf);

#endif

        }

        PBE2PARAM_free(pbe2);

    } else {

        if (aparamtype == V_ASN1_SEQUENCE)

            pbe = ASN1_item_unpack(aparam, ASN1_ITEM_rptr(PBEPARAM));

        if (pbe == NULL) {

            BIO_puts(bio_err, ", <unsupported parameters>");

            goto done;

        }

        BIO_printf(bio_err, ", Iteration %ld", ASN1_INTEGER_get(pbe->iter));

        PBEPARAM_free(pbe);

    }

 done:

    BIO_puts(bio_err, "\n");

    return 1;

}

/* Load all certificates from a given file */

int cert_load(BIO *in, STACK_OF(X509) *sk)

{

    int ret;

    X509 *cert;

    ret = 0;

    while ((cert = PEM_read_bio_X509(in, NULL, NULL, NULL))) {

        ret = 1;

        sk_X509_push(sk, cert);

    }

    if (ret)

        ERR_clear_error();

    return ret;

}

/* Generalised x509 attribute value print */

void print_attribute(BIO *out, const ASN1_TYPE *av)