| /* |
| * implement the applets for the CAC card. |
| * |
| * This code is licensed under the GNU LGPL, version 2.1 or later. |
| * See the COPYING.LIB file in the top-level directory. |
| */ |
| |
| #include "qemu-common.h" |
| |
| #include "cac.h" |
| #include "vcard.h" |
| #include "vcard_emul.h" |
| #include "card_7816.h" |
| |
| /* private data for PKI applets */ |
| typedef struct CACPKIAppletDataStruct { |
| unsigned char *cert; |
| int cert_len; |
| unsigned char *cert_buffer; |
| int cert_buffer_len; |
| unsigned char *sign_buffer; |
| int sign_buffer_len; |
| VCardKey *key; |
| } CACPKIAppletData; |
| |
| /* |
| * CAC applet private data |
| */ |
| struct VCardAppletPrivateStruct { |
| union { |
| CACPKIAppletData pki_data; |
| void *reserved; |
| } u; |
| }; |
| |
| /* |
| * handle all the APDU's that are common to all CAC applets |
| */ |
| static VCardStatus |
| cac_common_process_apdu(VCard *card, VCardAPDU *apdu, VCardResponse **response) |
| { |
| int ef; |
| VCardStatus ret = VCARD_FAIL; |
| |
| switch (apdu->a_ins) { |
| case VCARD7816_INS_SELECT_FILE: |
| if (apdu->a_p1 != 0x02) { |
| /* let the 7816 code handle applet switches */ |
| ret = VCARD_NEXT; |
| break; |
| } |
| /* handle file id setting */ |
| if (apdu->a_Lc != 2) { |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_DATA_INVALID); |
| ret = VCARD_DONE; |
| break; |
| } |
| /* CAC 1.0 only supports ef = 0 */ |
| ef = apdu->a_body[0] | (apdu->a_body[1] << 8); |
| if (ef != 0) { |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_FILE_NOT_FOUND); |
| ret = VCARD_DONE; |
| break; |
| } |
| *response = vcard_make_response(VCARD7816_STATUS_SUCCESS); |
| ret = VCARD_DONE; |
| break; |
| case VCARD7816_INS_GET_RESPONSE: |
| case VCARD7816_INS_VERIFY: |
| /* let the 7816 code handle these */ |
| ret = VCARD_NEXT; |
| break; |
| case CAC_GET_PROPERTIES: |
| case CAC_GET_ACR: |
| /* skip these for now, this will probably be needed */ |
| *response = vcard_make_response(VCARD7816_STATUS_ERROR_P1_P2_INCORRECT); |
| ret = VCARD_DONE; |
| break; |
| default: |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_COMMAND_NOT_SUPPORTED); |
| ret = VCARD_DONE; |
| break; |
| } |
| return ret; |
| } |
| |
| /* |
| * reset the inter call state between applet selects |
| */ |
| static VCardStatus |
| cac_applet_pki_reset(VCard *card, int channel) |
| { |
| VCardAppletPrivate *applet_private = NULL; |
| CACPKIAppletData *pki_applet = NULL; |
| applet_private = vcard_get_current_applet_private(card, channel); |
| assert(applet_private); |
| pki_applet = &(applet_private->u.pki_data); |
| |
| pki_applet->cert_buffer = NULL; |
| if (pki_applet->sign_buffer) { |
| g_free(pki_applet->sign_buffer); |
| pki_applet->sign_buffer = NULL; |
| } |
| pki_applet->cert_buffer_len = 0; |
| pki_applet->sign_buffer_len = 0; |
| return VCARD_DONE; |
| } |
| |
| static VCardStatus |
| cac_applet_pki_process_apdu(VCard *card, VCardAPDU *apdu, |
| VCardResponse **response) |
| { |
| CACPKIAppletData *pki_applet = NULL; |
| VCardAppletPrivate *applet_private = NULL; |
| int size, next; |
| unsigned char *sign_buffer; |
| vcard_7816_status_t status; |
| VCardStatus ret = VCARD_FAIL; |
| |
| applet_private = vcard_get_current_applet_private(card, apdu->a_channel); |
| assert(applet_private); |
| pki_applet = &(applet_private->u.pki_data); |
| |
| switch (apdu->a_ins) { |
| case CAC_UPDATE_BUFFER: |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_CONDITION_NOT_SATISFIED); |
| ret = VCARD_DONE; |
| break; |
| case CAC_GET_CERTIFICATE: |
| if ((apdu->a_p2 != 0) || (apdu->a_p1 != 0)) { |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_P1_P2_INCORRECT); |
| break; |
| } |
| assert(pki_applet->cert != NULL); |
| size = apdu->a_Le; |
| if (pki_applet->cert_buffer == NULL) { |
| pki_applet->cert_buffer = pki_applet->cert; |
| pki_applet->cert_buffer_len = pki_applet->cert_len; |
| } |
| size = MIN(size, pki_applet->cert_buffer_len); |
| next = MIN(255, pki_applet->cert_buffer_len - size); |
| *response = vcard_response_new_bytes( |
| card, pki_applet->cert_buffer, size, |
| apdu->a_Le, next ? |
| VCARD7816_SW1_WARNING_CHANGE : |
| VCARD7816_SW1_SUCCESS, |
| next); |
| pki_applet->cert_buffer += size; |
| pki_applet->cert_buffer_len -= size; |
| if ((*response == NULL) || (next == 0)) { |
| pki_applet->cert_buffer = NULL; |
| } |
| if (*response == NULL) { |
| *response = vcard_make_response( |
| VCARD7816_STATUS_EXC_ERROR_MEMORY_FAILURE); |
| } |
| ret = VCARD_DONE; |
| break; |
| case CAC_SIGN_DECRYPT: |
| if (apdu->a_p2 != 0) { |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_P1_P2_INCORRECT); |
| break; |
| } |
| size = apdu->a_Lc; |
| |
| sign_buffer = realloc(pki_applet->sign_buffer, |
| pki_applet->sign_buffer_len+size); |
| if (sign_buffer == NULL) { |
| g_free(pki_applet->sign_buffer); |
| pki_applet->sign_buffer = NULL; |
| pki_applet->sign_buffer_len = 0; |
| *response = vcard_make_response( |
| VCARD7816_STATUS_EXC_ERROR_MEMORY_FAILURE); |
| ret = VCARD_DONE; |
| break; |
| } |
| memcpy(sign_buffer+pki_applet->sign_buffer_len, apdu->a_body, size); |
| size += pki_applet->sign_buffer_len; |
| switch (apdu->a_p1) { |
| case 0x80: |
| /* p1 == 0x80 means we haven't yet sent the whole buffer, wait for |
| * the rest */ |
| pki_applet->sign_buffer = sign_buffer; |
| pki_applet->sign_buffer_len = size; |
| *response = vcard_make_response(VCARD7816_STATUS_SUCCESS); |
| ret = VCARD_DONE; |
| break; |
| case 0x00: |
| /* we now have the whole buffer, do the operation, result will be |
| * in the sign_buffer */ |
| status = vcard_emul_rsa_op(card, pki_applet->key, |
| sign_buffer, size); |
| if (status != VCARD7816_STATUS_SUCCESS) { |
| *response = vcard_make_response(status); |
| break; |
| } |
| *response = vcard_response_new(card, sign_buffer, size, apdu->a_Le, |
| VCARD7816_STATUS_SUCCESS); |
| if (*response == NULL) { |
| *response = vcard_make_response( |
| VCARD7816_STATUS_EXC_ERROR_MEMORY_FAILURE); |
| } |
| break; |
| default: |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_P1_P2_INCORRECT); |
| break; |
| } |
| g_free(sign_buffer); |
| pki_applet->sign_buffer = NULL; |
| pki_applet->sign_buffer_len = 0; |
| ret = VCARD_DONE; |
| break; |
| case CAC_READ_BUFFER: |
| /* new CAC call, go ahead and use the old version for now */ |
| /* TODO: implement */ |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_COMMAND_NOT_SUPPORTED); |
| ret = VCARD_DONE; |
| break; |
| default: |
| ret = cac_common_process_apdu(card, apdu, response); |
| break; |
| } |
| return ret; |
| } |
| |
| |
| static VCardStatus |
| cac_applet_id_process_apdu(VCard *card, VCardAPDU *apdu, |
| VCardResponse **response) |
| { |
| VCardStatus ret = VCARD_FAIL; |
| |
| switch (apdu->a_ins) { |
| case CAC_UPDATE_BUFFER: |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_CONDITION_NOT_SATISFIED); |
| ret = VCARD_DONE; |
| break; |
| case CAC_READ_BUFFER: |
| /* new CAC call, go ahead and use the old version for now */ |
| /* TODO: implement */ |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_COMMAND_NOT_SUPPORTED); |
| ret = VCARD_DONE; |
| break; |
| default: |
| ret = cac_common_process_apdu(card, apdu, response); |
| break; |
| } |
| return ret; |
| } |
| |
| |
| /* |
| * TODO: if we ever want to support general CAC middleware, we will need to |
| * implement the various containers. |
| */ |
| static VCardStatus |
| cac_applet_container_process_apdu(VCard *card, VCardAPDU *apdu, |
| VCardResponse **response) |
| { |
| VCardStatus ret = VCARD_FAIL; |
| |
| switch (apdu->a_ins) { |
| case CAC_READ_BUFFER: |
| case CAC_UPDATE_BUFFER: |
| *response = vcard_make_response( |
| VCARD7816_STATUS_ERROR_COMMAND_NOT_SUPPORTED); |
| ret = VCARD_DONE; |
| break; |
| default: |
| ret = cac_common_process_apdu(card, apdu, response); |
| break; |
| } |
| return ret; |
| } |
| |
| /* |
| * utilities for creating and destroying the private applet data |
| */ |
| static void |
| cac_delete_pki_applet_private(VCardAppletPrivate *applet_private) |
| { |
| CACPKIAppletData *pki_applet_data = NULL; |
| |
| if (applet_private == NULL) { |
| return; |
| } |
| pki_applet_data = &(applet_private->u.pki_data); |
| if (pki_applet_data->cert != NULL) { |
| g_free(pki_applet_data->cert); |
| } |
| if (pki_applet_data->sign_buffer != NULL) { |
| g_free(pki_applet_data->sign_buffer); |
| } |
| if (pki_applet_data->key != NULL) { |
| vcard_emul_delete_key(pki_applet_data->key); |
| } |
| g_free(applet_private); |
| } |
| |
| static VCardAppletPrivate * |
| cac_new_pki_applet_private(const unsigned char *cert, |
| int cert_len, VCardKey *key) |
| { |
| CACPKIAppletData *pki_applet_data = NULL; |
| VCardAppletPrivate *applet_private = NULL; |
| applet_private = (VCardAppletPrivate *)g_malloc(sizeof(VCardAppletPrivate)); |
| |
| pki_applet_data = &(applet_private->u.pki_data); |
| pki_applet_data->cert_buffer = NULL; |
| pki_applet_data->cert_buffer_len = 0; |
| pki_applet_data->sign_buffer = NULL; |
| pki_applet_data->sign_buffer_len = 0; |
| pki_applet_data->key = NULL; |
| pki_applet_data->cert = (unsigned char *)g_malloc(cert_len+1); |
| /* |
| * if we want to support compression, then we simply change the 0 to a 1 |
| * and compress the cert data with libz |
| */ |
| pki_applet_data->cert[0] = 0; /* not compressed */ |
| memcpy(&pki_applet_data->cert[1], cert, cert_len); |
| pki_applet_data->cert_len = cert_len+1; |
| |
| pki_applet_data->key = key; |
| return applet_private; |
| } |
| |
| |
| /* |
| * create a new cac applet which links to a given cert |
| */ |
| static VCardApplet * |
| cac_new_pki_applet(int i, const unsigned char *cert, |
| int cert_len, VCardKey *key) |
| { |
| VCardAppletPrivate *applet_private = NULL; |
| VCardApplet *applet = NULL; |
| unsigned char pki_aid[] = { 0xa0, 0x00, 0x00, 0x00, 0x79, 0x01, 0x00 }; |
| int pki_aid_len = sizeof(pki_aid); |
| |
| pki_aid[pki_aid_len-1] = i; |
| |
| applet_private = cac_new_pki_applet_private(cert, cert_len, key); |
| if (applet_private == NULL) { |
| goto failure; |
| } |
| applet = vcard_new_applet(cac_applet_pki_process_apdu, cac_applet_pki_reset, |
| pki_aid, pki_aid_len); |
| if (applet == NULL) { |
| goto failure; |
| } |
| vcard_set_applet_private(applet, applet_private, |
| cac_delete_pki_applet_private); |
| applet_private = NULL; |
| |
| return applet; |
| |
| failure: |
| if (applet_private != NULL) { |
| cac_delete_pki_applet_private(applet_private); |
| } |
| return NULL; |
| } |
| |
| |
| static unsigned char cac_default_container_aid[] = { |
| 0xa0, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00 }; |
| static unsigned char cac_id_aid[] = { |
| 0xa0, 0x00, 0x00, 0x00, 0x79, 0x03, 0x00 }; |
| /* |
| * Initialize the cac card. This is the only public function in this file. All |
| * the rest are connected through function pointers. |
| */ |
| VCardStatus |
| cac_card_init(VReader *reader, VCard *card, |
| const char *params, |
| unsigned char * const *cert, |
| int cert_len[], |
| VCardKey *key[] /* adopt the keys*/, |
| int cert_count) |
| { |
| int i; |
| VCardApplet *applet; |
| |
| /* CAC Cards are VM Cards */ |
| vcard_set_type(card, VCARD_VM); |
| |
| /* create one PKI applet for each cert */ |
| for (i = 0; i < cert_count; i++) { |
| applet = cac_new_pki_applet(i, cert[i], cert_len[i], key[i]); |
| if (applet == NULL) { |
| goto failure; |
| } |
| vcard_add_applet(card, applet); |
| } |
| |
| /* create a default blank container applet */ |
| applet = vcard_new_applet(cac_applet_container_process_apdu, |
| NULL, cac_default_container_aid, |
| sizeof(cac_default_container_aid)); |
| if (applet == NULL) { |
| goto failure; |
| } |
| vcard_add_applet(card, applet); |
| |
| /* create a default blank container applet */ |
| applet = vcard_new_applet(cac_applet_id_process_apdu, |
| NULL, cac_id_aid, |
| sizeof(cac_id_aid)); |
| if (applet == NULL) { |
| goto failure; |
| } |
| vcard_add_applet(card, applet); |
| return VCARD_DONE; |
| |
| failure: |
| return VCARD_FAIL; |
| } |
| |
