Momentum-Apps/picopass/scenes/picopass_scene_read_card_success.c

#include "../picopass_i.h"
#include <dolphin/dolphin.h>
#include <picopass_keys.h>

#define TAG "PicopassSceneReadCardSuccess"

void picopass_scene_read_card_success_widget_callback(
    GuiButtonType result,
    InputType type,
    void* context) {
    furi_assert(context);
    Picopass* picopass = context;

    if(type == InputTypeShort) {
        view_dispatcher_send_custom_event(picopass->view_dispatcher, result);
    }
}

void picopass_scene_read_card_success_on_enter(void* context) {
    Picopass* picopass = context;
    PicopassDeviceAuthMethod auth = picopass->dev->dev_data.auth;

    FuriString* csn_str = furi_string_alloc_set("CSN:");
    FuriString* credential_str = furi_string_alloc();
    FuriString* info_str = furi_string_alloc();
    FuriString* key_str = furi_string_alloc();

    dolphin_deed(DolphinDeedNfcReadSuccess);

    // Send notification
    notification_message(picopass->notifications, &sequence_success);

    // Setup view
    PicopassBlock* card_data = picopass->dev->dev_data.card_data;
    PicopassPacs* pacs = &picopass->dev->dev_data.pacs;
    Widget* widget = picopass->widget;

    uint8_t csn[PICOPASS_BLOCK_LEN] = {0};
    memcpy(csn, card_data[PICOPASS_CSN_BLOCK_INDEX].data, PICOPASS_BLOCK_LEN);
    for(uint8_t i = 0; i < PICOPASS_BLOCK_LEN; i++) {
        furi_string_cat_printf(csn_str, "%02X", csn[i]);
    }

    bool empty = picopass_is_memset(
        card_data[PICOPASS_ICLASS_PACS_CFG_BLOCK_INDEX].data, 0xFF, PICOPASS_BLOCK_LEN);
    bool SE = pacs->se_enabled;
    bool configCard = (card_data[PICOPASS_ICLASS_PACS_CFG_BLOCK_INDEX].data[7] >> 2 & 3) == 2;
    bool secured = (card_data[PICOPASS_CONFIG_BLOCK_INDEX].data[7] & PICOPASS_FUSE_CRYPT10) !=
                   PICOPASS_FUSE_CRYPT0;
    bool hid_csn = picopass_device_hid_csn(picopass->dev);

    if(!secured) {
        furi_string_cat_printf(info_str, "Non-Secured Chip");

        if(!hid_csn) {
            furi_string_cat_printf(credential_str, "Non-HID CSN");
        }

        widget_add_button_element(
            widget,
            GuiButtonTypeRight,
            "More",
            picopass_scene_read_card_success_widget_callback,
            picopass);
    } else if(auth == PicopassDeviceAuthMethodFailed) {
        furi_string_cat_printf(info_str, "Read Failed");

        if(pacs->se_enabled) {
            furi_string_cat_printf(credential_str, "SE enabled");
        } else if(!hid_csn) {
            furi_string_cat_printf(credential_str, "Non-HID CSN");
        }

        widget_add_button_element(
            widget,
            GuiButtonTypeCenter,
            "Menu",
            picopass_scene_read_card_success_widget_callback,
            picopass);
        widget_add_button_element(
            widget,
            GuiButtonTypeRight,
            "More",
            picopass_scene_read_card_success_widget_callback,
            picopass);
    } else if(pacs->se_enabled) {
        furi_string_cat_printf(credential_str, "SE enabled");
        furi_string_cat_printf(info_str, "SIO");

        widget_add_button_element(
            widget,
            GuiButtonTypeRight,
            "More",
            picopass_scene_read_card_success_widget_callback,
            picopass);
    } else if(configCard) {
        furi_string_cat_printf(credential_str, "Config Card");
    } else if(empty) {
        furi_string_cat_printf(credential_str, "Empty");

        widget_add_button_element(
            widget,
            GuiButtonTypeCenter,
            "Menu",
            picopass_scene_read_card_success_widget_callback,
            picopass);
    } else if(pacs->bitLength == 0 || pacs->bitLength == 255) {
        // Neither of these are valid.  Indicates the block was all 0x00 or all 0xff
        if(SE) {
            furi_string_cat_printf(info_str, "SIO");
        } else {
            furi_string_cat_printf(info_str, "Invalid PACS");
        }

        widget_add_button_element(
            widget,
            GuiButtonTypeCenter,
            "Menu",
            picopass_scene_read_card_success_widget_callback,
            picopass);
        widget_add_button_element(
            widget,
            GuiButtonTypeRight,
            "More",
            picopass_scene_read_card_success_widget_callback,
            picopass);
    } else {
        size_t bytesLength = 1 + pacs->bitLength / 8;
        furi_string_set(credential_str, "");
        furi_string_cat_printf(credential_str, "(%d) ", pacs->bitLength);
        for(uint8_t i = PICOPASS_BLOCK_LEN - bytesLength; i < PICOPASS_BLOCK_LEN; i++) {
            furi_string_cat_printf(credential_str, "%02X", pacs->credential[i]);
        }

        if(pacs->sio) {
            furi_string_cat_printf(info_str, " +SIO");
        }

        widget_add_button_element(
            widget,
            GuiButtonTypeRight,
            "More",
            picopass_scene_read_card_success_widget_callback,
            picopass);
    }

    if(auth == PicopassDeviceAuthMethodUnset) {
        furi_string_cat_printf(key_str, "Error: Auth Unset");
    } else if(auth == PicopassDeviceAuthMethodNone) {
        furi_string_cat_printf(key_str, "Unsecure card");
    } else if(auth == PicopassDeviceAuthMethodNrMac) {
        furi_string_cat_printf(key_str, "No Key: used NR-MAC");
    } else if(auth == PicopassDeviceAuthMethodFailed) {
        furi_string_cat_printf(key_str, "Auth Failed");
    } else if(auth == PicopassDeviceAuthMethodKey) {
        furi_string_cat_printf(key_str, "Key: ");
        uint8_t key[PICOPASS_BLOCK_LEN];
        memcpy(key, &pacs->key, PICOPASS_BLOCK_LEN);

        bool standard_key = true;
        // Handle DES key being 56bits with parity in LSB
        for(uint8_t i = 0; i < PICOPASS_BLOCK_LEN; i++) {
            if((key[i] & 0xFE) != (picopass_iclass_key[i] & 0xFE)) {
                standard_key = false;
                break;
            }
        }

        if(standard_key) {
            furi_string_cat_printf(key_str, "Standard");
        } else {
            for(uint8_t i = 0; i < PICOPASS_BLOCK_LEN; i++) {
                furi_string_cat_printf(key_str, "%02X", key[i]);
            }
        }
    }

    widget_add_button_element(
        widget,
        GuiButtonTypeLeft,
        "Retry",
        picopass_scene_read_card_success_widget_callback,
        picopass);

    widget_add_string_element(
        widget, 64, 5, AlignCenter, AlignCenter, FontSecondary, furi_string_get_cstr(csn_str));
    widget_add_string_element(
        widget,
        64,
        20,
        AlignCenter,
        AlignCenter,
        FontPrimary,
        furi_string_get_cstr(credential_str));
    widget_add_string_element(
        widget, 64, 36, AlignCenter, AlignCenter, FontSecondary, furi_string_get_cstr(info_str));
    widget_add_string_element(
        widget, 64, 46, AlignCenter, AlignCenter, FontSecondary, furi_string_get_cstr(key_str));

    furi_string_free(csn_str);
    furi_string_free(credential_str);
    furi_string_free(info_str);
    furi_string_free(key_str);

    view_dispatcher_switch_to_view(picopass->view_dispatcher, PicopassViewWidget);
}

bool picopass_scene_read_card_success_on_event(void* context, SceneManagerEvent event) {
    Picopass* picopass = context;
    bool consumed = false;

    if(event.type == SceneManagerEventTypeCustom) {
        if(event.event == GuiButtonTypeLeft) {
            consumed = scene_manager_previous_scene(picopass->scene_manager);
        } else if(event.event == GuiButtonTypeRight) {
            // Clear device name
            picopass_device_set_name(picopass->dev, "");
            scene_manager_next_scene(picopass->scene_manager, PicopassSceneCardMenu);
            consumed = true;
        } else if(event.event == GuiButtonTypeCenter) {
            consumed = scene_manager_search_and_switch_to_another_scene(
                picopass->scene_manager, PicopassSceneStart);
        }
    } else if(event.type == SceneManagerEventTypeBack) {
        scene_manager_search_and_switch_to_previous_scene(
            picopass->scene_manager, PicopassSceneStart);
        consumed = true;
    }
    return consumed;
}

void picopass_scene_read_card_success_on_exit(void* context) {
    Picopass* picopass = context;

    // Clear view
    widget_reset(picopass->widget);
}