path: root/smime/lib/e-cert-db.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* The following is the mozilla license blurb, as the bodies some of
   these functions were derived from the mozilla source. */
/* e-cert-db.c
 *
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Netscape security libraries.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1994-2000
 * the Initial Developer. All Rights Reserved.
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 */

/*
 * Author: Chris Toshok (toshok@ximian.com)
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>

/* private NSS defines used by PSM */
/* (must be declated before cert.h) */
#define CERT_NewTempCertificate __CERT_NewTempCertificate
#define CERT_AddTempCertToPerm __CERT_AddTempCertToPerm

#include "e-cert-db.h"
#include "e-cert-trust.h"
#include "e-pkcs12.h"

#include "gmodule.h"

#include "nss.h"
#include "ssl.h"
#include "p12plcy.h"
#include "pk11func.h"
#include "nssckbi.h"
#include "secmod.h"
#include "certdb.h"
#include "plstr.h"
#include "prprf.h"
#include "prmem.h"
#include "e-util/e-util.h"
#include "e-util/e-dialog-utils.h"
#include "e-util/e-util-private.h"
#include <libedataserverui/e-passwords.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

enum {
    PK11_PASSWD,
    PK11_CHANGE_PASSWD,
    CONFIRM_CA_CERT_IMPORT,
    LAST_SIGNAL
};

static guint e_cert_db_signals[LAST_SIGNAL];

struct _ECertDBPrivate {
    guint reserved;
};

#define PARENT_TYPE G_TYPE_OBJECT
static GObjectClass *parent_class;

static CERTDERCerts* e_cert_db_get_certs_from_package (PRArenaPool *arena, char *data, guint32 length);



static void
e_cert_db_dispose (GObject *object)
{
    ECertDB *ec = E_CERT_DB (object);

    if (!ec->priv)
        return;

    /* XXX free instance specific data */

    g_free (ec->priv);
    ec->priv = NULL;

    if (G_OBJECT_CLASS (parent_class)->dispose)
        G_OBJECT_CLASS (parent_class)->dispose (object);
}

#ifdef notyet
PRBool
ucs2_ascii_conversion_fn (PRBool toUnicode,
              unsigned char *inBuf,
              unsigned int inBufLen,
              unsigned char *outBuf,
              unsigned int maxOutBufLen,
              unsigned int *outBufLen,
              PRBool swapBytes)
{
    printf ("in ucs2_ascii_conversion_fn\n");
}
#endif

static char* PR_CALLBACK
pk11_password (PK11SlotInfo* slot, PRBool retry, void* arg)
{
    char *pwd;
    char *nsspwd;

    gboolean rv = FALSE;

    g_signal_emit (e_cert_db_peek (),
               e_cert_db_signals[PK11_PASSWD], 0,
               slot,
               retry,
               &pwd,
               &rv);

    if (pwd == NULL)
        return NULL;

    nsspwd = PORT_Strdup (pwd);
    memset (pwd, 0, strlen (pwd));
    g_free (pwd);
    return nsspwd;
}

static void
initialize_nss (void)
{
    char *evolution_dir_path;
    gboolean success;

#ifdef G_OS_WIN32
    /* NSS wants filenames in system codepage */
    evolution_dir_path = g_win32_locale_filename_from_utf8 (e_get_user_data_dir ());
#else
    evolution_dir_path = g_strdup (e_get_user_data_dir ());
#endif

    /* we initialize NSS here to make sure it only happens once */
    success = (SECSuccess == NSS_InitReadWrite (evolution_dir_path));
    if (!success) {
        success = (SECSuccess == NSS_Init (evolution_dir_path));
        if (success)
            g_warning ("opening cert databases read-only");
    }
    if (!success) {
        success = (SECSuccess == NSS_NoDB_Init (evolution_dir_path));
        if (success)
            g_warning ("initializing security library without cert databases.");
    }
    g_free (evolution_dir_path);

    if (!success) {
        g_warning ("Failed all methods for initializing NSS");
        return;
    }

    NSS_SetDomesticPolicy();

    PK11_SetPasswordFunc(pk11_password);

    /* Enable ciphers for PKCS#12 */
    SEC_PKCS12EnableCipher(PKCS12_RC4_40, 1);
    SEC_PKCS12EnableCipher(PKCS12_RC4_128, 1);
    SEC_PKCS12EnableCipher(PKCS12_RC2_CBC_40, 1);
    SEC_PKCS12EnableCipher(PKCS12_RC2_CBC_128, 1);
    SEC_PKCS12EnableCipher(PKCS12_DES_56, 1);
    SEC_PKCS12EnableCipher(PKCS12_DES_EDE3_168, 1);
    SEC_PKCS12SetPreferredCipher(PKCS12_DES_EDE3_168, 1);
#ifdef notyet
    PORT_SetUCS2_ASCIIConversionFunction(ucs2_ascii_conversion_fn);
#endif
}

static void
install_loadable_roots (void)
{
    SECMODModuleList *list = SECMOD_GetDefaultModuleList ();
    SECMODListLock *lock = SECMOD_GetDefaultModuleListLock ();
    SECMODModule *RootsModule = NULL;
    int i;

    SECMOD_GetReadLock (lock);
    while (!RootsModule && list) {
        SECMODModule *module = list->module;

        for (i = 0; i < module->slotCount; i++) {
            PK11SlotInfo *slot = module->slots[i];
            if (PK11_IsPresent (slot)) {
                if (PK11_HasRootCerts(slot)) {
                    RootsModule = module;
                    break;
                }
            }
        }

        list = list->next;
    }
    SECMOD_ReleaseReadLock (lock);

    if (RootsModule) {
        /* Check version, and unload module if it is too old */
        CK_INFO info;

        if (PK11_GetModInfo (RootsModule, &info) != SECSuccess) {
            /* Do not use this module */
            RootsModule = NULL;
        } else {
            /* NSS_BUILTINS_LIBRARY_VERSION_MAJOR and NSS_BUILTINS_LIBRARY_VERSION_MINOR
             * define the version we expect to have.
             * Later version are fine.
             * Older versions are not ok, and we will replace with our own version.
             */
            if ((info.libraryVersion.major < NSS_BUILTINS_LIBRARY_VERSION_MAJOR)
                || (info.libraryVersion.major == NSS_BUILTINS_LIBRARY_VERSION_MAJOR
                && info.libraryVersion.minor < NSS_BUILTINS_LIBRARY_VERSION_MINOR)) {
                PRInt32 modType;

                SECMOD_DeleteModule (RootsModule->commonName, &modType);

                RootsModule = NULL;
            }
        }
    }

    if (!RootsModule) {
#ifndef G_OS_WIN32
        /* grovel in various places for mozilla's built-in
           cert module.

           XXX yes this is gross.  *sigh*
        */
        char *paths_to_check[] = {
#ifdef MOZILLA_NSS_LIB_DIR
            MOZILLA_NSS_LIB_DIR,
#endif
            "/usr/lib",
            "/usr/lib/mozilla",
            "/opt/mozilla/lib",
            "/opt/mozilla/lib/mozilla"
        };

        for (i = 0; i < G_N_ELEMENTS (paths_to_check); i ++) {
            char *dll_path = g_module_build_path (paths_to_check [i], "nssckbi");

            if (g_file_test (dll_path, G_FILE_TEST_EXISTS)) {
                PRInt32 modType;

                /* Delete the existing module */
                SECMOD_DeleteModule ("Mozilla Root Certs", &modType);

                SECMOD_AddNewModule("Mozilla Root Certs",dll_path, 0, 0);
                g_free (dll_path);
                break;
            }

            g_free (dll_path);
        }
#else
        /* FIXME: Might be useful to look up if there is a
         * Mozilla installation on the machine and use the
         * nssckbi.dll from there.
         */
#endif
    }
}

static void
e_cert_db_class_init (ECertDBClass *klass)
{
    GObjectClass *object_class;

    object_class = G_OBJECT_CLASS(klass);

    parent_class = g_type_class_ref (PARENT_TYPE);

    object_class->dispose = e_cert_db_dispose;

    initialize_nss();
    /* check to see if you have a rootcert module installed */
    install_loadable_roots();

    e_cert_db_signals[PK11_PASSWD] =
        g_signal_new ("pk11_passwd",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ECertDBClass, pk11_passwd),
                  NULL, NULL,
                  e_marshal_BOOLEAN__POINTER_BOOLEAN_POINTER,
                  G_TYPE_BOOLEAN, 3,
                  G_TYPE_POINTER, G_TYPE_BOOLEAN, G_TYPE_POINTER);

    e_cert_db_signals[PK11_CHANGE_PASSWD] =
        g_signal_new ("pk11_change_passwd",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ECertDBClass, pk11_change_passwd),
                  NULL, NULL,
                  e_marshal_BOOLEAN__POINTER_POINTER,
                  G_TYPE_BOOLEAN, 2,
                  G_TYPE_POINTER, G_TYPE_POINTER);

    e_cert_db_signals[CONFIRM_CA_CERT_IMPORT] =
        g_signal_new ("confirm_ca_cert_import",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (ECertDBClass, confirm_ca_cert_import),
                  NULL, NULL,
                  e_marshal_BOOLEAN__POINTER_POINTER_POINTER_POINTER,
                  G_TYPE_BOOLEAN, 4,
                  G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER);
}

static void
e_cert_db_init (ECertDB *ec)
{
    ec->priv = g_new0 (ECertDBPrivate, 1);
}

GType
e_cert_db_get_type (void)
{
    static GType cert_type = 0;

    if (!cert_type) {
        static const GTypeInfo cert_info =  {
            sizeof (ECertDBClass),
            NULL,           /* base_init */
            NULL,           /* base_finalize */
            (GClassInitFunc) e_cert_db_class_init,
            NULL,           /* class_finalize */
            NULL,           /* class_data */
            sizeof (ECertDB),
            0,             /* n_preallocs */
            (GInstanceInitFunc) e_cert_db_init,
        };

        cert_type = g_type_register_static (PARENT_TYPE, "ECertDB", &cert_info, 0);
    }

    return cert_type;
}



GStaticMutex init_mutex = G_STATIC_MUTEX_INIT;
static ECertDB *cert_db = NULL;

ECertDB*
e_cert_db_peek (void)
{
    g_static_mutex_lock (&init_mutex);
    if (!cert_db)
        cert_db = g_object_new (E_TYPE_CERT_DB, NULL);
    g_static_mutex_unlock (&init_mutex);

    return cert_db;
}

void
e_cert_db_shutdown (void)
{
    /* XXX */
}

/* searching for certificates */
ECert*
e_cert_db_find_cert_by_nickname (ECertDB *certdb,
                 const char *nickname,
                 GError **error)
{
    /*  nsNSSShutDownPreventionLock locker;*/
    CERTCertificate *cert = NULL;

    /*PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("Getting \"%s\"\n", asciiname));*/
    cert = PK11_FindCertFromNickname((char*)nickname, NULL);
    if (!cert) {
        cert = CERT_FindCertByNickname(CERT_GetDefaultCertDB(), (char*)nickname);
    }


    if (cert) {
        /*    PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("got it\n"));*/
        ECert *ecert = e_cert_new (cert);
        return ecert;
    }
    else {
        /* XXX gerror */
        return NULL;
    }
}

#ifdef notyet
ECert*
e_cert_db_find_cert_by_key (ECertDB *certdb,
                const char *db_key,
                GError **error)
{
    /*  nsNSSShutDownPreventionLock locker;*/
    SECItem keyItem = {siBuffer, NULL, 0};
    SECItem *dummy;
    CERTIssuerAndSN issuerSN;
    unsigned long moduleID,slotID;
    CERTCertificate *cert;

    if (!db_key) {
        /* XXX gerror */
        return NULL;
    }

    dummy = NSSBase64_DecodeBuffer(NULL, &keyItem, db_key,
                       (PRUint32)PL_strlen(db_key));

    /* someday maybe we can speed up the search using the moduleID and slotID*/
    moduleID = NS_NSS_GET_LONG(keyItem.data);
    slotID = NS_NSS_GET_LONG(&keyItem.data[NS_NSS_LONG]);

    /* build the issuer/SN structure*/
    issuerSN.serialNumber.len = NS_NSS_GET_LONG(&keyItem.data[NS_NSS_LONG*2]);
    issuerSN.derIssuer.len = NS_NSS_GET_LONG(&keyItem.data[NS_NSS_LONG*3]);
    issuerSN.serialNumber.data= &keyItem.data[NS_NSS_LONG*4];
    issuerSN.derIssuer.data= &keyItem.data[NS_NSS_LONG*4+
                           issuerSN.serialNumber.len];

    cert = CERT_FindCertByIssuerAndSN(CERT_GetDefaultCertDB(), &issuerSN);
    PR_FREEIF(keyItem.data);
    if (cert) {
        ECert *ecert = e_cert_new (cert);
        return e_cert;
    }

    /* XXX gerror */
    return NULL;
}

GList*
e_cert_db_get_cert_nicknames    (ECertDB *certdb,
                 ECertType cert_type,
                 GError **error)
{
}

ECert*
e_cert_db_find_email_encryption_cert (ECertDB *certdb,
                      const char *nickname,
                      GError **error)
{
}

ECert*
e_cert_db_find_email_signing_cert (ECertDB *certdb,
                   const char *nickname,
                   GError **error)
{
}
#endif

ECert*
e_cert_db_find_cert_by_email_address (ECertDB *certdb,
                      const char *email,
                      GError **error)
{
    /*  nsNSSShutDownPreventionLock locker; */
    ECert *cert;
    CERTCertificate *any_cert = CERT_FindCertByNicknameOrEmailAddr(CERT_GetDefaultCertDB(),
                                       (char*)email);
    CERTCertList *certlist;

    if (!any_cert) {
        /* XXX gerror */
        return NULL;
    }

    /* any_cert now contains a cert with the right subject, but it might not have the correct usage */
    certlist = CERT_CreateSubjectCertList(NULL,
                          CERT_GetDefaultCertDB(),
                          &any_cert->derSubject,
                          PR_Now(), PR_TRUE);
    if (!certlist) {
        /* XXX gerror */
        CERT_DestroyCertificate(any_cert);
        return NULL;
    }

    if (SECSuccess != CERT_FilterCertListByUsage(certlist, certUsageEmailRecipient, PR_FALSE)) {
        /* XXX gerror */
        CERT_DestroyCertificate(any_cert);
        /* XXX free certlist? */
        return NULL;
    }

    if (CERT_LIST_END(CERT_LIST_HEAD(certlist), certlist)) {
        /* XXX gerror */
        CERT_DestroyCertificate(any_cert);
        /* XXX free certlist? */
        return NULL;
    }

    cert = e_cert_new (CERT_LIST_HEAD(certlist)->cert);

    return cert;
}

static gboolean
confirm_download_ca_cert (ECertDB *cert_db, ECert *cert, gboolean *trust_ssl, gboolean *trust_email, gboolean *trust_objsign)
{
    gboolean rv = FALSE;

    *trust_ssl =
        *trust_email =
        *trust_objsign = FALSE;

    g_signal_emit (e_cert_db_peek (),
               e_cert_db_signals[CONFIRM_CA_CERT_IMPORT], 0,
               cert,
               trust_ssl,
               trust_email,
               trust_objsign,
               &rv);

    return rv;
}

static gboolean
handle_ca_cert_download(ECertDB *cert_db, GList *certs, GError **error)
{
    ECert *certToShow;
    SECItem der;
    char *raw_der = NULL;
    CERTCertificate *tmpCert;

    /* First thing we have to do is figure out which certificate
       we're gonna present to the user.  The CA may have sent down
       a list of certs which may or may not be a chained list of
       certs.  Until the day we can design some solid UI for the
       general case, we'll code to the > 90% case.  That case is
       where a CA sends down a list that is a chain up to its root
       in either ascending or descending order.  What we're gonna
       do is compare the first 2 entries, if the first was signed
       by the second, we assume the leaf cert is the first cert
       and display it.  If the second cert was signed by the first
       cert, then we assume the first cert is the root and the
       last cert in the array is the leaf.  In this case we
       display the last cert.
    */

    /*  nsNSSShutDownPreventionLock locker;*/

    if (certs == NULL) {
        g_warning ("Didn't get any certs to import.");
        return TRUE;
    }
    else if (certs->next == NULL) {
        /* there's 1 cert */
        certToShow = E_CERT (certs->data);
    }
    else {
        /* there are multiple certs */
        ECert *cert0;
        ECert *cert1;
        const char* cert0SubjectName;
        const char* cert0IssuerName;
        const char* cert1SubjectName;
        const char* cert1IssuerName;

        cert0 = E_CERT (certs->data);
        cert1 = E_CERT (certs->next->data);

        cert0IssuerName = e_cert_get_issuer_name (cert0);
        cert0SubjectName = e_cert_get_subject_name (cert0);

        cert1IssuerName = e_cert_get_issuer_name (cert1);
        cert1SubjectName = e_cert_get_subject_name (cert1);

        if (!strcmp(cert1IssuerName, cert0SubjectName)) {
            /* In this case, the first cert in the list signed the second,
               so the first cert is the root.  Let's display the last cert
               in the list. */
            certToShow = E_CERT (g_list_last (certs)->data);
        }
        else if (!strcmp(cert0IssuerName, cert1SubjectName)) {
            /* In this case the second cert has signed the first cert.  The
               first cert is the leaf, so let's display it. */
            certToShow = cert0;
        } else {
            /* It's not a chain, so let's just show the first one in the
               downloaded list. */
            certToShow = cert0;
        }
    }

    if (!certToShow) {
        /* XXX gerror */
        return FALSE;
    }

    if (!e_cert_get_raw_der (certToShow, &raw_der, &der.len)) {
        /* XXX gerror */
        return FALSE;
    }

    der.data = (unsigned char *)raw_der;

    {
        /*PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("Creating temp cert\n"));*/
        CERTCertDBHandle *certdb = CERT_GetDefaultCertDB();
        tmpCert = CERT_FindCertByDERCert(certdb, &der);
        if (!tmpCert) {
            tmpCert = CERT_NewTempCertificate(certdb, &der,
                              NULL, PR_FALSE, PR_TRUE);
        }
        if (!tmpCert) {
            g_warning ("Couldn't create cert from DER blob");
            return FALSE;
        }
    }

#if 0
    CERTCertificateCleaner tmpCertCleaner(tmpCert);
#endif

    if (tmpCert->isperm) {
        /* XXX we shouldn't be popping up dialogs in this code. */
        e_notice (NULL, GTK_MESSAGE_WARNING, _("Certificate already exists"));
        /* XXX gerror */
        return FALSE;
    }
    else {
        gboolean trust_ssl, trust_email, trust_objsign;
        char *nickname;
        SECStatus srv;
        CERTCertTrust trust;

        if (!confirm_download_ca_cert (cert_db, certToShow, &trust_ssl, &trust_email, &trust_objsign)) {
            /* XXX gerror */
            return FALSE;
        }

        /*PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("trust is %d\n", trustBits));*/

        nickname = CERT_MakeCANickname(tmpCert);

        /*PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("Created nick \"%s\"\n", nickname.get()));*/

        e_cert_trust_init (&trust);
        e_cert_trust_set_valid_ca (&trust);
        e_cert_trust_add_ca_trust (&trust,
                       trust_ssl,
                       trust_email,
                       trust_objsign);

        srv = CERT_AddTempCertToPerm(tmpCert,
                         nickname,
                         &trust);

        if (srv != SECSuccess) {
            /* XXX gerror */
            return FALSE;
        }

#if 0
        /* Now it's time to add the rest of the certs we just downloaded.
           Since we didn't prompt the user about any of these certs, we
           won't set any trust bits for them. */
        e_cert_trust_init (&trust);
        e_cert_trust_set_valid_ca (&trust);
        e_cert_trusts_add_ca_trust (&trust, 0, 0, 0);
        for (PRUint32 i=0; i<numCerts; i++) {
            if (i == selCertIndex)
                continue;

            certToShow = do_QueryElementAt(x509Certs, i);
            certToShow->GetRawDER(&der.len, (PRUint8 **)&der.data);

            CERTCertificate *tmpCert2 =
                CERT_NewTempCertificate(certdb, &der, nsnull, PR_FALSE, PR_TRUE);

            if (!tmpCert2) {
                NS_ASSERTION(0, "Couldn't create temp cert from DER blob\n");
                continue;  /* Let's try to import the rest of 'em */
            }
            nickname.Adopt(CERT_MakeCANickname(tmpCert2));
            CERT_AddTempCertToPerm(tmpCert2, NS_CONST_CAST(char*,nickname.get()),
                           defaultTrust.GetTrust());
            CERT_DestroyCertificate(tmpCert2);
        }
#endif
        return TRUE;
    }
}

/* deleting certificates */
gboolean
e_cert_db_delete_cert (ECertDB *certdb,
               ECert   *ecert)
{
    /*  nsNSSShutDownPreventionLock locker;
        nsNSSCertificate *nssCert = NS_STATIC_CAST(nsNSSCertificate*, aCert); */

    CERTCertificate *cert;
    SECStatus srv = SECSuccess;
    if (!e_cert_mark_for_deletion (ecert)) {
        return FALSE;
    }

    cert = e_cert_get_internal_cert (ecert);
    if (cert->slot && e_cert_get_cert_type (ecert) != E_CERT_USER) {
        /* To delete a cert of a slot (builtin, most likely), mark it as
           completely untrusted.  This way we keep a copy cached in the
           local database, and next time we try to load it off of the
           external token/slot, we'll know not to trust it.  We don't
           want to do that with user certs, because a user may  re-store
           the cert onto the card again at which point we *will* want to
           trust that cert if it chains up properly. */
        CERTCertTrust trust;

        e_cert_trust_init_with_values (&trust, 0, 0, 0);
        srv = CERT_ChangeCertTrust(CERT_GetDefaultCertDB(),
                       cert, &trust);
    }

    /*PR_LOG(gPIPNSSLog, PR_LOG_DEBUG, ("cert deleted: %d", srv));*/
    return (srv) ? FALSE : TRUE;
}

/* importing certificates */
gboolean
e_cert_db_import_certs (ECertDB *certdb,
            char *data, guint32 length,
            ECertType cert_type,
            GError **error)
{
    /*nsNSSShutDownPreventionLock locker;*/
    PRArenaPool *arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
    GList *certs = NULL;
    CERTDERCerts *certCollection = e_cert_db_get_certs_from_package (arena, data, length);
    int i;
    gboolean rv;

    if (!certCollection) {
        /* XXX gerror */
        PORT_FreeArena(arena, PR_FALSE);
        return FALSE;
    }

    /* Now let's create some certs to work with */
    for (i=0; i<certCollection->numcerts; i++) {
        SECItem *currItem = &certCollection->rawCerts[i];
        ECert *cert;

        cert = e_cert_new_from_der ((char*)currItem->data, currItem->len);
        if (!cert) {
            /* XXX gerror */
            g_list_foreach (certs, (GFunc)g_object_unref, NULL);
            g_list_free (certs);
            PORT_FreeArena(arena, PR_FALSE);
            return FALSE;
        }
        certs = g_list_append (certs, cert);
    }
    switch (cert_type) {
    case E_CERT_CA:
        rv = handle_ca_cert_download(certdb, certs, error);
        break;
    default:
        /* We only deal with import CA certs in this method currently.*/
        /* XXX gerror */
        PORT_FreeArena(arena, PR_FALSE);
        rv = FALSE;
    }

    g_list_foreach (certs, (GFunc)g_object_unref, NULL);
    g_list_free (certs);
    PORT_FreeArena(arena, PR_FALSE);
    return rv;
}

gboolean
e_cert_db_import_email_cert (ECertDB *certdb,
                 char *data, guint32 length,
                 GError **error)
{
    /*nsNSSShutDownPreventionLock locker;*/
    SECStatus srv = SECFailure;
    gboolean rv = TRUE;
    CERTCertificate * cert;
    SECItem **rawCerts;
    int numcerts;
    int i;
    PRArenaPool *arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
    CERTDERCerts *certCollection = e_cert_db_get_certs_from_package (arena, data, length);

    if (!certCollection) {
        /* XXX g_error */

        PORT_FreeArena(arena, PR_FALSE);
        return FALSE;
    }

    cert = CERT_NewTempCertificate(CERT_GetDefaultCertDB(), certCollection->rawCerts,
                       (char *)NULL, PR_FALSE, PR_TRUE);
    if (!cert) {
        /* XXX g_error */
        rv = FALSE;
        goto loser;
    }
    numcerts = certCollection->numcerts;
    rawCerts = (SECItem **) PORT_Alloc(sizeof(SECItem *) * numcerts);
    if ( !rawCerts ) {
        /* XXX g_error */
        rv = FALSE;
        goto loser;
    }

    for ( i = 0; i < numcerts; i++ ) {
        rawCerts[i] = &certCollection->rawCerts[i];
    }

    srv = CERT_ImportCerts(CERT_GetDefaultCertDB(), certUsageEmailSigner,
                   numcerts, rawCerts, NULL, PR_TRUE, PR_FALSE,
                   NULL);
    if ( srv != SECSuccess ) {
        /* XXX g_error */
        rv = FALSE;
        goto loser;
    }
    srv = CERT_SaveSMimeProfile(cert, NULL, NULL);
    PORT_Free(rawCerts);
 loser:
    if (cert)
        CERT_DestroyCertificate(cert);
    if (arena)
        PORT_FreeArena(arena, PR_TRUE);
    return rv;
}

static char *
default_nickname (CERTCertificate *cert)
{
    /*  nsNSSShutDownPreventionLock locker; */
    char *username = NULL;
    char *caname = NULL;
    char *nickname = NULL;
    char *tmp = NULL;
    int count;
    char *nickFmt=NULL;
    CERTCertificate *dummycert;
    PK11SlotInfo *slot=NULL;
    CK_OBJECT_HANDLE keyHandle;

    CERTCertDBHandle *defaultcertdb = CERT_GetDefaultCertDB();

    username = CERT_GetCommonName(&cert->subject);
    if ( username == NULL )
        username = PL_strdup("");

    if ( username == NULL )
        goto loser;

    caname = CERT_GetOrgName(&cert->issuer);
    if ( caname == NULL )
        caname = PL_strdup("");

    if ( caname == NULL )
        goto loser;

    count = 1;

    nickFmt = "%1$s's %2$s ID";

    nickname = PR_smprintf(nickFmt, username, caname);
    /*
     * We need to see if the private key exists on a token, if it does
     * then we need to check for nicknames that already exist on the smart
     * card.
     */
    slot = PK11_KeyForCertExists(cert, &keyHandle, NULL);
    if (slot == NULL) {
        goto loser;
    }
    if (!PK11_IsInternal(slot)) {
        tmp = PR_smprintf("%s:%s", PK11_GetTokenName(slot), nickname);
        PR_Free(nickname);
        nickname = tmp;
        tmp = NULL;
    }
    tmp = nickname;
    while ( 1 ) {
        if ( count > 1 ) {
            nickname = PR_smprintf("%s #%d", tmp, count);
        }

        if ( nickname == NULL )
            goto loser;

        if (PK11_IsInternal(slot)) {
            /* look up the nickname to make sure it isn't in use already */
            dummycert = CERT_FindCertByNickname(defaultcertdb, nickname);

        } else {
            /*
             * Check the cert against others that already live on the smart
             * card.
             */
            dummycert = PK11_FindCertFromNickname(nickname, NULL);
            if (dummycert != NULL) {
                /*
                 * Make sure the subject names are different.
                 */
                if (CERT_CompareName(&cert->subject, &dummycert->subject) == SECEqual) {
                    /*
                     * There is another certificate with the same nickname and
                     * the same subject name on the smart card, so let's use this
                     * nickname.
                     */
                    CERT_DestroyCertificate(dummycert);
                    dummycert = NULL;
                }
            }
        }
        if ( dummycert == NULL )
            goto done;

        /* found a cert, destroy it and loop */
        CERT_DestroyCertificate(dummycert);
        if (tmp != nickname) PR_Free(nickname);
        count++;
    } /* end of while(1) */

 loser:
    if ( nickname ) {
        PR_Free(nickname);
    }
    nickname = NULL;
 done:
    if ( caname ) {
        PR_Free(caname);
    }
    if ( username )  {
        PR_Free(username);
    }
    if (slot != NULL) {
        PK11_FreeSlot(slot);
        if (nickname != NULL) {
            tmp = nickname;
            nickname = strchr(tmp, ':');
            if (nickname != NULL) {
                nickname++;
                nickname = PL_strdup(nickname);
                PR_Free(tmp);
                tmp = NULL;
            } else {
                nickname = tmp;
                tmp = NULL;
            }
        }
    }
    PR_FREEIF(tmp);
    return(nickname);
}

gboolean
e_cert_db_import_user_cert (ECertDB *certdb,
                char *data, guint32 length,
                GError **error)
{
    /*  nsNSSShutDownPreventionLock locker;*/
    PK11SlotInfo *slot;
    char * nickname = NULL;
    gboolean rv = FALSE;
    int numCACerts;
    SECItem *CACerts;
    CERTDERCerts * collectArgs;
    PRArenaPool *arena;
    CERTCertificate * cert=NULL;

    arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
    if ( arena == NULL ) {
        /* XXX g_error */
        goto loser;
    }

    collectArgs = e_cert_db_get_certs_from_package (arena, data, length);
    if (!collectArgs) {
        /* XXX g_error */
        goto loser;
    }

    cert = CERT_NewTempCertificate(CERT_GetDefaultCertDB(), collectArgs->rawCerts,
                       (char *)NULL, PR_FALSE, PR_TRUE);
    if (!cert) {
        /* XXX g_error */
        goto loser;
    }

    slot = PK11_KeyForCertExists(cert, NULL, NULL);
    if ( slot == NULL ) {
        /* XXX g_error */
        goto loser;
    }
    PK11_FreeSlot(slot);

    /* pick a nickname for the cert */
    if (cert->nickname) {
        /* sigh, we need a call to look up other certs with this subject and
         * identify nicknames from them. We can no longer walk down internal
         * database structures  rjr */
        nickname = cert->nickname;
    }
    else {
        nickname = default_nickname(cert);
    }

    /* user wants to import the cert */
    slot = PK11_ImportCertForKey(cert, nickname, NULL);
    if (!slot) {
        /* XXX g_error */
        goto loser;
    }
    PK11_FreeSlot(slot);
    numCACerts = collectArgs->numcerts - 1;

    if (numCACerts) {
        CACerts = collectArgs->rawCerts+1;
        if ( ! CERT_ImportCAChain(CACerts, numCACerts, certUsageUserCertImport) ) {
            rv = TRUE;
        }
    }

 loser:
    if (arena) {
        PORT_FreeArena(arena, PR_FALSE);
    }
    if ( cert ) {
        CERT_DestroyCertificate(cert);
    }
    return rv;
}

gboolean
e_cert_db_import_server_cert (ECertDB *certdb,
                  char *data, guint32 length,
                  GError **error)
{
    /* not c&p'ing this over at the moment, as we don't have a UI
       for server certs anyway */
    return FALSE;
}

gboolean
e_cert_db_import_certs_from_file (ECertDB *cert_db,
                  const char *file_path,
                  ECertType cert_type,
                  GError **error)
{
    gboolean rv;
    int fd;
    struct stat sb;
    char *buf;
    int bytes_read;

    switch (cert_type) {
    case E_CERT_CA:
    case E_CERT_CONTACT:
    case E_CERT_SITE:
        /* good */
        break;

    default:
        /* not supported (yet) */
        /* XXX gerror */
        return FALSE;
    }

    fd = g_open (file_path, O_RDONLY|O_BINARY, 0);
    if (fd == -1) {
        /* XXX gerror */
        return FALSE;
    }

    if (-1 == fstat (fd, &sb)) {
        /* XXX gerror */
        close (fd);
        return FALSE;
    }

    buf = g_malloc (sb.st_size);
    if (!buf) {
        /* XXX gerror */
        close (fd);
        return FALSE;
    }

    bytes_read = read (fd, buf, sb.st_size);

    close (fd);

    if (bytes_read != sb.st_size) {
        /* XXX gerror */
        rv = FALSE;
    }
    else {
        printf ("importing %d bytes from `%s'\n", bytes_read, file_path);

        switch (cert_type) {
        case E_CERT_CA:
            rv = e_cert_db_import_certs (cert_db, buf, bytes_read, cert_type, error);
            break;

        case E_CERT_SITE:
            rv = e_cert_db_import_server_cert (cert_db, buf, bytes_read, error);
            break;

        case E_CERT_CONTACT:
            rv = e_cert_db_import_email_cert (cert_db, buf, bytes_read, error);
            break;

        default:
            rv = FALSE;
            break;
        }
    }

    g_free (buf);
    return rv;
}

gboolean
e_cert_db_import_pkcs12_file (ECertDB *cert_db,
                  const char *file_path,
                  GError **error)
{
    EPKCS12 *pkcs12 = e_pkcs12_new ();
    GError *e = NULL;

    if (!e_pkcs12_import_from_file (pkcs12, file_path, &e)) {
        g_propagate_error (error, e);
        return FALSE;
    }

    return TRUE;
}

#ifdef notyet
gboolean
e_cert_db_export_pkcs12_file (ECertDB *cert_db,
                  const char *file_path,
                  GList *certs,
                  GError **error)
{
}
#endif

gboolean
e_cert_db_login_to_slot (ECertDB *cert_db,
             PK11SlotInfo *slot)
{
    if (PK11_NeedLogin (slot)) {
        PK11_Logout (slot);

        if (PK11_NeedUserInit (slot)) {
            char *pwd;
            gboolean rv = FALSE;

            printf ("initializing slot password\n");

            g_signal_emit (e_cert_db_peek (),
                       e_cert_db_signals[PK11_CHANGE_PASSWD], 0,
                       NULL,
                       &pwd,
                       &rv);

            if (!rv)
                return FALSE;

            /* the user needs to specify the initial password */
            PK11_InitPin (slot, "", pwd);
        }

        PK11_SetPasswordFunc(pk11_password);
        if (PK11_Authenticate (slot, PR_TRUE, NULL) != SECSuccess) {
            printf ("PK11_Authenticate failed (err = %d/%d)\n", PORT_GetError(), PORT_GetError() + 0x2000);
            return FALSE;
        }
    }

    return TRUE;
}



static SECStatus PR_CALLBACK
collect_certs(void *arg, SECItem **certs, int numcerts)
{
    CERTDERCerts *collectArgs;
    SECItem *cert;
    SECStatus rv;

    collectArgs = (CERTDERCerts *)arg;

    collectArgs->numcerts = numcerts;
    collectArgs->rawCerts = (SECItem *) PORT_ArenaZAlloc(collectArgs->arena, sizeof(SECItem) * numcerts);
    if ( collectArgs->rawCerts == NULL )
        return(SECFailure);

    cert = collectArgs->rawCerts;

    while ( numcerts-- ) {
        rv = SECITEM_CopyItem(collectArgs->arena, cert, *certs);
        if ( rv == SECFailure )
            return(SECFailure);
        cert++;
        certs++;
    }

    return (SECSuccess);
}

static CERTDERCerts*
e_cert_db_get_certs_from_package (PRArenaPool *arena,
                  char *data,
                  guint32 length)
{
    /*nsNSSShutDownPreventionLock locker;*/
    CERTDERCerts *collectArgs =
        (CERTDERCerts *)PORT_ArenaZAlloc(arena, sizeof(CERTDERCerts));
    SECStatus sec_rv;

    if (!collectArgs)
        return NULL;

    collectArgs->arena = arena;
    sec_rv = CERT_DecodeCertPackage(data,
                    length, collect_certs,
                    (void *)collectArgs);

    if (sec_rv != SECSuccess)
        return NULL;

    return collectArgs;
}