Quelle  p12creat.c   Sprache: C

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "pkcs12.h"
#include "secitem.h"
#include "secport.h"
#include "secder.h"
#include "secoid.h"
#include "p12local.h"
#include "secerr.h"

/* allocate space for a PFX structure and set up initial
 * arena pool.  pfx structure is cleared and a pointer to
 * the new structure is returned.
 */
SEC_PKCS12PFXItem *
sec_pkcs12_new_pfx(void)
{
    SEC_PKCS12PFXItem *pfx = NULL;
    PLArenaPool *poolp = NULL;

    poolp = PORT_NewArena(SEC_ASN1_DEFAULT_ARENA_SIZE); /* XXX Different size? */
    if (poolp == NULL)
        goto loser;

    pfx = (SEC_PKCS12PFXItem *)PORT_ArenaZAlloc(poolp,
                                                sizeof(SEC_PKCS12PFXItem));
    if (pfx == NULL)
        goto loser;
    pfx->poolp = poolp;

    return pfx;

loser:
    PORT_FreeArena(poolp, PR_TRUE);
    return NULL;
}

/* allocate space for a PFX structure and set up initial
 * arena pool.  pfx structure is cleared and a pointer to
 * the new structure is returned.
 */
SEC_PKCS12AuthenticatedSafe *
sec_pkcs12_new_asafe(PLArenaPool *poolp)
{
    SEC_PKCS12AuthenticatedSafe *asafe = NULL;
    void *mark;

    mark = PORT_ArenaMark(poolp);
    asafe = (SEC_PKCS12AuthenticatedSafe *)PORT_ArenaZAlloc(poolp,
                                                            sizeof(SEC_PKCS12AuthenticatedSafe));
    if (asafe == NULL)
        goto loser;
    asafe->poolp = poolp;
    PORT_Memset(&asafe->old_baggage, 0, sizeof(SEC_PKCS12Baggage_OLD));

    PORT_ArenaUnmark(poolp, mark);
    return asafe;

loser:
    PORT_ArenaRelease(poolp, mark);
    return NULL;
}

/* create a safe contents structure with a list of
 * length 0 with the first element being NULL
 */
SEC_PKCS12SafeContents *
sec_pkcs12_create_safe_contents(PLArenaPool *poolp)
{
    SEC_PKCS12SafeContents *safe;
    void *mark;

    if (poolp == NULL)
        return NULL;

    /* allocate structure */
    mark = PORT_ArenaMark(poolp);
    safe = (SEC_PKCS12SafeContents *)PORT_ArenaZAlloc(poolp,
                                                      sizeof(SEC_PKCS12SafeContents));
    if (safe == NULL) {
        PORT_SetError(SEC_ERROR_NO_MEMORY);
        PORT_ArenaRelease(poolp, mark);
        return NULL;
    }

    /* init list */
    safe->contents = (SEC_PKCS12SafeBag **)PORT_ArenaZAlloc(poolp,
                                                            sizeof(SEC_PKCS12SafeBag *));
    if (safe->contents == NULL) {
        PORT_SetError(SEC_ERROR_NO_MEMORY);
        PORT_ArenaRelease(poolp, mark);
        return NULL;
    }
    safe->contents[0] = NULL;
    safe->poolp = poolp;
    safe->safe_size = 0;
    PORT_ArenaUnmark(poolp, mark);
    return safe;
}

/* create a new external bag which is appended onto the list
 * of bags in baggage.  the bag is created in the same arena
 * as baggage
 */
SEC_PKCS12BaggageItem *
sec_pkcs12_create_external_bag(SEC_PKCS12Baggage *luggage)
{
    void *dummy, *mark;
    SEC_PKCS12BaggageItem *bag;

    if (luggage == NULL) {
        return NULL;
    }

    mark = PORT_ArenaMark(luggage->poolp);

    /* allocate space for null terminated bag list */
    if (luggage->bags == NULL) {
        luggage->bags = (SEC_PKCS12BaggageItem **)PORT_ArenaZAlloc(luggage->poolp,
                                                                   sizeof(SEC_PKCS12BaggageItem *));
        if (luggage->bags == NULL) {
            goto loser;
        }
        luggage->luggage_size = 0;
    }

    /* grow the list */
    dummy = PORT_ArenaGrow(luggage->poolp, luggage->bags,
                           sizeof(SEC_PKCS12BaggageItem *) * (luggage->luggage_size + 1),
                           sizeof(SEC_PKCS12BaggageItem *) * (luggage->luggage_size + 2));
    if (dummy == NULL) {
        goto loser;
    }
    luggage->bags = (SEC_PKCS12BaggageItem **)dummy;

    luggage->bags[luggage->luggage_size] =
        (SEC_PKCS12BaggageItem *)PORT_ArenaZAlloc(luggage->poolp,
                                                  sizeof(SEC_PKCS12BaggageItem));
    if (luggage->bags[luggage->luggage_size] == NULL) {
        goto loser;
    }

    /* create new bag and append it to the end */
    bag = luggage->bags[luggage->luggage_size];
    bag->espvks = (SEC_PKCS12ESPVKItem **)PORT_ArenaZAlloc(
        luggage->poolp,
        sizeof(SEC_PKCS12ESPVKItem *));
    bag->unencSecrets = (SEC_PKCS12SafeBag **)PORT_ArenaZAlloc(
        luggage->poolp,
        sizeof(SEC_PKCS12SafeBag *));
    if ((bag->espvks == NULL) || (bag->unencSecrets == NULL)) {
        goto loser;
    }

    bag->poolp = luggage->poolp;
    luggage->luggage_size++;
    luggage->bags[luggage->luggage_size] = NULL;
    bag->espvks[0] = NULL;
    bag->unencSecrets[0] = NULL;
    bag->nEspvks = bag->nSecrets = 0;

    PORT_ArenaUnmark(luggage->poolp, mark);
    return bag;

loser:
    PORT_ArenaRelease(luggage->poolp, mark);
    PORT_SetError(SEC_ERROR_NO_MEMORY);
    return NULL;
}

/* creates a baggage witha NULL terminated 0 length list */
SEC_PKCS12Baggage *
sec_pkcs12_create_baggage(PLArenaPool *poolp)
{
    SEC_PKCS12Baggage *luggage;
    void *mark;

    if (poolp == NULL)
        return NULL;

    mark = PORT_ArenaMark(poolp);

    /* allocate bag */
    luggage = (SEC_PKCS12Baggage *)PORT_ArenaZAlloc(poolp,
                                                    sizeof(SEC_PKCS12Baggage));
    if (luggage == NULL) {
        PORT_SetError(SEC_ERROR_NO_MEMORY);
        PORT_ArenaRelease(poolp, mark);
        return NULL;
    }

    /* init list */
    luggage->bags = (SEC_PKCS12BaggageItem **)PORT_ArenaZAlloc(poolp,
                                                               sizeof(SEC_PKCS12BaggageItem *));
    if (luggage->bags == NULL) {
        PORT_SetError(SEC_ERROR_NO_MEMORY);
        PORT_ArenaRelease(poolp, mark);
        return NULL;
    }

    luggage->bags[0] = NULL;
    luggage->luggage_size = 0;
    luggage->poolp = poolp;

    PORT_ArenaUnmark(poolp, mark);
    return luggage;
}

/* free pfx structure and associated items in the arena */
void
SEC_PKCS12DestroyPFX(SEC_PKCS12PFXItem *pfx)
{
    if (pfx != NULL && pfx->poolp != NULL) {
        PORT_FreeArena(pfx->poolp, PR_TRUE);
    }
}