Archipelago » qemu

/*

 * implement the Java card standard.

 *

 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.

 * See the COPYING.LIB file in the top-level directory.

 */

#include "qemu-common.h"

#include "vcard.h"

#include "vcard_emul.h"

#include "card_7816t.h"

struct VCardAppletStruct {

    VCardApplet   *next;

    VCardProcessAPDU process_apdu;

    VCardResetApplet reset_applet;

    unsigned char *aid;

    int aid_len;

    void *applet_private;

    VCardAppletPrivateFree applet_private_free;

};

struct VCardStruct {

    int reference_count;

    VCardApplet *applet_list;

    VCardApplet *current_applet[MAX_CHANNEL];

    VCardBufferResponse *vcard_buffer_response;

    VCardType type;

    VCardEmul *vcard_private;

    VCardEmulFree vcard_private_free;

    VCardGetAtr vcard_get_atr;

};

VCardBufferResponse *

vcard_buffer_response_new(unsigned char *buffer, int size)

{

    VCardBufferResponse *new_buffer;

    new_buffer = (VCardBufferResponse *)g_malloc(sizeof(VCardBufferResponse));

    new_buffer->buffer = (unsigned char *)g_malloc(size);

    memcpy(new_buffer->buffer, buffer, size);

    new_buffer->buffer_len = size;

    new_buffer->current = new_buffer->buffer;

    new_buffer->len = size;

    return new_buffer;

}

void

vcard_buffer_response_delete(VCardBufferResponse *buffer_response)

{

    if (buffer_response == NULL) {

        return;

    }

    if (buffer_response->buffer) {

        g_free(buffer_response->buffer);

    }

    g_free(buffer_response);

}

/*

 * clean up state after a reset

 */

void

vcard_reset(VCard *card, VCardPower power)

{

    int i;

    VCardApplet *applet = NULL;

    if (card->type ==  VCARD_DIRECT) {

        /* select the last applet */

        VCardApplet *current_applet = NULL;

        for (current_applet = card->applet_list; current_applet;

                                       current_applet = current_applet->next) {

            applet = current_applet;

        }

    }

    for (i = 0; i < MAX_CHANNEL; i++) {

        card->current_applet[i] = applet;

    }

    if (card->vcard_buffer_response) {

        vcard_buffer_response_delete(card->vcard_buffer_response);

        card->vcard_buffer_response = NULL;

    }

    vcard_emul_reset(card, power);

    if (applet) {

        applet->reset_applet(card, 0);

    }

}

/* applet utilities */

/*

 * applet utilities

 */

/* constructor */

VCardApplet *

vcard_new_applet(VCardProcessAPDU applet_process_function,

                 VCardResetApplet applet_reset_function,

                 unsigned char *aid, int aid_len)

{

    VCardApplet *applet;

    applet = (VCardApplet *)g_malloc(sizeof(VCardApplet));

    applet->next = NULL;

    applet->applet_private = NULL;

    applet->applet_private_free = NULL;

    applet->process_apdu = applet_process_function;

    applet->reset_applet = applet_reset_function;

    applet->aid = g_malloc(aid_len);

    memcpy(applet->aid, aid, aid_len);

    applet->aid_len = aid_len;

    return applet;

}

/* destructor */

void

vcard_delete_applet(VCardApplet *applet)

{

    if (applet == NULL) {

        return;

    }

    if (applet->applet_private_free) {

        applet->applet_private_free(applet->applet_private);

        applet->applet_private = NULL;

    }

    if (applet->aid) {

        g_free(applet->aid);

        applet->aid = NULL;

    }

    g_free(applet);

}

/* accessor */

void

vcard_set_applet_private(VCardApplet *applet, VCardAppletPrivate *private,

                         VCardAppletPrivateFree private_free)

{

    if (applet->applet_private_free) {

        applet->applet_private_free(applet->applet_private);

    }

    applet->applet_private = private;

    applet->applet_private_free = private_free;

}

VCard *

vcard_new(VCardEmul *private, VCardEmulFree private_free)

{

    VCard *new_card;

    int i;

    new_card = (VCard *)g_malloc(sizeof(VCard));

    new_card->applet_list = NULL;

    for (i = 0; i < MAX_CHANNEL; i++) {

        new_card->current_applet[i] = NULL;

    }

    new_card->vcard_buffer_response = NULL;

    new_card->type = VCARD_VM;

    new_card->vcard_private = private;

    new_card->vcard_private_free = private_free;

    new_card->vcard_get_atr = NULL;

    new_card->reference_count = 1;

    return new_card;

}

VCard *

vcard_reference(VCard *vcard)

{

    if (vcard == NULL) {

        return NULL;

    }

    vcard->reference_count++;

    return vcard;

}

void

vcard_free(VCard *vcard)

{

    VCardApplet *current_applet = NULL;

    VCardApplet *next_applet = NULL;

    if (vcard == NULL) {

        return;

    }

    vcard->reference_count--;

    if (vcard->reference_count != 0) {

        return;

    }

    if (vcard->vcard_private_free) {

        (*vcard->vcard_private_free)(vcard->vcard_private);

        vcard->vcard_private_free = 0;

        vcard->vcard_private = 0;

    }

    for (current_applet = vcard->applet_list; current_applet;

                                        current_applet = next_applet) {

        next_applet = current_applet->next;

        vcard_delete_applet(current_applet);

    }

    vcard_buffer_response_delete(vcard->vcard_buffer_response);

    g_free(vcard);

}

void

vcard_get_atr(VCard *vcard, unsigned char *atr, int *atr_len)

{

    if (vcard->vcard_get_atr) {

        (*vcard->vcard_get_atr)(vcard, atr, atr_len);

        return;

    }

    vcard_emul_get_atr(vcard, atr, atr_len);

}

void

vcard_set_atr_func(VCard *card, VCardGetAtr vcard_get_atr)

{

    card->vcard_get_atr = vcard_get_atr;

}

VCardStatus

vcard_add_applet(VCard *card, VCardApplet *applet)

{

    applet->next = card->applet_list;

    card->applet_list = applet;

    /* if our card-type is direct, always call the applet */

    if (card->type ==  VCARD_DIRECT) {

        int i;

        for (i = 0; i < MAX_CHANNEL; i++) {

            card->current_applet[i] = applet;

        }

    }

    return VCARD_DONE;

}

/*

 * manage applets

 */

VCardApplet *

vcard_find_applet(VCard *card, unsigned char *aid, int aid_len)

{

    VCardApplet *current_applet;

    for (current_applet = card->applet_list; current_applet;

                                        current_applet = current_applet->next) {

        if (current_applet->aid_len != aid_len) {

            continue;

        }

        if (memcmp(current_applet->aid, aid, aid_len) == 0) {

            break;

        }

    }

    return current_applet;

}

unsigned char *

vcard_applet_get_aid(VCardApplet *applet, int *aid_len)

{

    if (applet == NULL) {

        return NULL;

    }

    *aid_len = applet->aid_len;

    return applet->aid;

}

void

vcard_select_applet(VCard *card, int channel, VCardApplet *applet)

{

    assert(channel < MAX_CHANNEL);

    card->current_applet[channel] = applet;

    /* reset the applet */

    if (applet && applet->reset_applet) {

        applet->reset_applet(card, channel);

    }

}

VCardAppletPrivate *

vcard_get_current_applet_private(VCard *card, int channel)

{

    VCardApplet *applet = card->current_applet[channel];

    if (applet == NULL) {

        return NULL;

    }

    return applet->applet_private;

}

VCardStatus

vcard_process_applet_apdu(VCard *card, VCardAPDU *apdu,

                          VCardResponse **response)

{

    if (card->current_applet[apdu->a_channel]) {

        return card->current_applet[apdu->a_channel]->process_apdu(

                                                        card, apdu, response);

    }

    return VCARD_NEXT;

}

/*

 * Accessor functions

 */

/* accessor functions for the response buffer */

VCardBufferResponse *

vcard_get_buffer_response(VCard *card)

{

    return card->vcard_buffer_response;

}

void

vcard_set_buffer_response(VCard *card, VCardBufferResponse *buffer)

{

    card->vcard_buffer_response = buffer;

}

/* accessor functions for the type */

VCardType

vcard_get_type(VCard *card)

{

    return card->type;

}

void

vcard_set_type(VCard *card, VCardType type)

{

    card->type = type;

}

/* accessor for private data */

VCardEmul *

vcard_get_private(VCard *vcard)

{

    return vcard->vcard_private;

}