Janos Uart App

┌────────────────────────────────┐        UART (115200 8N1)        ┌──────────────────────┐
│  UI Device (Tab5/CoreS3/etc)   │ ──────────────────────────────> │  JanOS on ESP32C5    │
│  - LVGL touchscreen            │ <────────────────────────────── │  - WiFi radio        │
│  - Sends text commands         │        Text responses           │  - BLE radio         │
│  - Parses text responses       │                                 │  - SD card           │
│  - FreeRTOS tasks for I/O      │                                 │  - GPS (optional)    │
└────────────────────────────────┘                                 └──────────────────────┘

#define UART_NUM          UART_NUM_1
#define UART_BAUD_RATE    115200
#define UART_BUF_SIZE     4096

static void uart_init(void) {
    const uart_config_t uart_config = {
        .baud_rate = UART_BAUD_RATE,
        .data_bits = UART_DATA_8_BITS,
        .parity    = UART_PARITY_DISABLE,
        .stop_bits = UART_STOP_BITS_1,
        .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
        .source_clk = UART_SCLK_DEFAULT,
    };
    uart_driver_install(UART_NUM, UART_BUF_SIZE * 2, 0, 0, NULL, 0);
    uart_param_config(UART_NUM, &uart_config);
    uart_set_pin(UART_NUM, tx_pin, rx_pin, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
}

static void uart_send_command(const char *cmd) {
    uart_write_bytes(UART_NUM, cmd, strlen(cmd));
    uart_write_bytes(UART_NUM, "\r\n", 2);
    ESP_LOGI(TAG, "Sent: %s", cmd);
}

char rx_buffer[UART_BUF_SIZE];
char line_buffer[512];
int line_pos = 0;

while (!done && !timed_out) {
    int len = uart_read_bytes(UART_NUM, rx_buffer, UART_BUF_SIZE - 1, pdMS_TO_TICKS(100));
    if (len > 0) {
        rx_buffer[len] = '\0';
        for (int i = 0; i < len; i++) {
            char c = rx_buffer[i];
            if (c == '\n' || c == '\r') {
                if (line_pos > 0) {
                    line_buffer[line_pos] = '\0';

                    // === PARSE THIS LINE ===
                    if (strstr(line_buffer, "COMPLETION_MARKER")) {
                        done = true;
                        break;
                    }
                    parse_data_line(line_buffer);

                    line_pos = 0;
                }
            } else if (line_pos < sizeof(line_buffer) - 1) {
                line_buffer[line_pos++] = c;
            }
        }
    }
}

// Line: "1","AX3","","C4:2B:44:12:29:20","112","WPA2","-59","5GHz"
static bool parse_network_line(const char *line, wifi_network_t *net) {
    if (line[0] != '"') return false;
    char temp[256];
    strncpy(temp, line, sizeof(temp) - 1);
    char *fields[8] = {NULL};
    int field_idx = 0;
    char *p = temp;
    while (*p && field_idx < 8) {
        if (*p == '"') {
            p++;
            fields[field_idx] = p;
            while (*p && *p != '"') p++;
            if (*p == '"') { *p = '\0'; p++; }
            field_idx++;
            if (*p == ',') p++;
        } else { p++; }
    }
    if (field_idx < 8) return false;
    net->index = atoi(fields[0]);
    strncpy(net->ssid, fields[1], sizeof(net->ssid) - 1);
    strncpy(net->bssid, fields[3], sizeof(net->bssid) - 1);
    net->channel = atoi(fields[4]);
    strncpy(net->security, fields[5], sizeof(net->security) - 1);
    net->rssi = atoi(fields[6]);
    strncpy(net->band, fields[7], sizeof(net->band) - 1);
    return true;
}

if (strstr(line, "Our IP:") != NULL) {
    // Extract IP after "Our IP: " up to ","
} else if (strstr(line, "->") != NULL) {
    char *p = line;
    while (*p == ' ') p++;
    // read IP until space, skip " -> ", read MAC
}

if (line[0] == '"') {
    char *ssid_start = line + 1;
    char *ssid_end = strchr(ssid_start, '"');
    if (ssid_end && *(ssid_end+1) == ',' && *(ssid_end+3) == '"') {
        *ssid_end = '\0';
        char *pass_start = ssid_end + 4;
        char *pass_end = strchr(pass_start, '"');
        if (pass_end) { *pass_end = '\0'; /* ssid_start and pass_start are your values */ }
    }
}

if (strstr(line_buffer, "HTML files found") != NULL) {
    header_found = true;
} else if (header_found && line_pos > 2) {
    int file_num;
    char filename[64];
    if (sscanf(line_buffer, "%d %63s", &file_num, filename) == 2) {
        // store filename at index file_num
    }
}

char *p = line;
while (*p == ' ') p++;
if (isdigit((unsigned char)*p)) {
    int idx = 0;
    while (isdigit((unsigned char)*p)) { idx = idx * 10 + (*p - '0'); p++; }
    while (*p == ' ') p++;
    if (*p != '\0') {
        char ssid[33];
        strncpy(ssid, p, sizeof(ssid) - 1);
        // trim trailing whitespace
    }
}

static bool parse_deauth_line(const char *line, deauth_entry_t *entry) {
    if (!strstr(line, "[DEAUTH]")) return false;
    const char *ch = strstr(line, "CH:");
    entry->channel = atoi(ch + 3);
    const char *ap = strstr(line, "AP:"); ap += 3; while (*ap == ' ') ap++;
    const char *paren = strchr(ap, '(');
    size_t ap_len = paren - ap;
    while (ap_len > 0 && ap[ap_len-1] == ' ') ap_len--;
    memcpy(entry->ap_name, ap, ap_len);
    const char *paren_end = strchr(paren + 1, ')');
    memcpy(entry->bssid, paren + 1, paren_end - paren - 1);
    entry->rssi = atoi(strstr(line, "RSSI:") + 5);
    return true;
}

if (strstr(line, "HANDSHAKE IS COMPLETE AND VALID")) { /* handshake validated */ }
if (strstr(line, "PCAP saved:")) { /* extract filename from path */ }
if (strstr(line, "handshake saved for SSID:")) { /* extract SSID after "SSID: " */ }

if (strstr(line, "connected to SSID=")) { /* extract SSID between ' quotes */ }
if (strstr(line, "password=")) { /* extract password after = */ }
if (strstr(line, "Password verified!")) { /* attack succeeded */ }

if (strstr(rx_buffer, "SUCCESS")) { connected = true; }
if (strstr(rx_buffer, "FAILED") || strstr(rx_buffer, "TIMEOUT")) { failed = true; }
// Extract DHCP IP from: "DHCP IP: 192.168.0.5, Netmask: 255.255.255.0, GW: 192.168.0.1"
const char *dhcp = strstr(rx_buffer, "DHCP IP:");
if (dhcp) { /* parse IP, Netmask, GW */ }

// Progress line: "  Scanning 192.168.0.4 ports 21-143 [1/100] ..."
if (strstr(line, "Scanning") && strstr(line, "ports") && strchr(line, '[')) {
    char ip[16]; int port_from, port_to, current, total;
    sscanf(line, "  Scanning %15s ports %d-%d [%d/%d]",
           ip, &port_from, &port_to, &current, &total);
    int pct = (current * 100) / total;
    // update progress bar
}
// New host: "Host: 192.168.0.4  (00:C0:CA:B4:E6:3F)"
if (strncmp(trimmed, "Host:", 5) == 0) {
    char ip[16], mac[18];
    if (sscanf(trimmed, "Host: %15s (%17[^)])", ip, mac) == 2) {
        // new host with MAC
    } else if (sscanf(trimmed, "Host: %15s (MAC unknown)", ip) == 1) {
        // new host without MAC
    }
}
// Open port: "    135/tcp  open  MSRPC"
int port; char service[32];
if (sscanf(trimmed, "%d/tcp open %31s", &port, service) == 2 ||
    sscanf(trimmed, "%d/tcp  open  %31s", &port, service) == 2) {
    // found open port
}
// Completion: "Scanned 4 hosts, found 4 open ports"
if (strstr(line, "Scanned") && strstr(line, "open ports")) {
    int hosts, ports;
    sscanf(line, "Scanned %d hosts, found %d open ports", &hosts, &ports);
    // scan complete
}

show_*_page()
  ├── Create LVGL objects (container, labels, buttons, table)
  ├── Register event callbacks
  ├── Start background UART monitor task (if needed)
  └── Set as current visible page

[User interacts / UART data arrives]

cleanup (on back/close):
  ├── Set monitoring_active = false
  ├── Send "stop" via UART
  ├── Wait for task to finish (furi_thread_join or vTaskDelete)
  ├── Delete LVGL objects (lv_obj_del)
  ├── NULL all pointers
  └── Free allocated memory

static lv_obj_t *create_tile(lv_obj_t *parent, const char *icon_text,
                              const char *label_text, lv_color_t bg_color,
                              lv_event_cb_t cb, const char *user_data) {
    lv_obj_t *tile = lv_btn_create(parent);
    lv_obj_set_size(tile, TILE_WIDTH, TILE_HEIGHT);
    lv_obj_set_style_bg_color(tile, bg_color, LV_STATE_DEFAULT);
    lv_obj_set_style_bg_color(tile, lv_color_lighten(bg_color, 50), LV_STATE_PRESSED);
    lv_obj_set_style_radius(tile, 12, 0);
    lv_obj_set_style_shadow_width(tile, 0, 0);
    lv_obj_set_flex_flow(tile, LV_FLEX_FLOW_COLUMN);
    lv_obj_set_flex_align(tile, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);

    lv_obj_t *icon = lv_label_create(tile);
    lv_label_set_text(icon, icon_text);
    lv_obj_set_style_text_font(icon, &lv_font_montserrat_28, 0);
    lv_obj_set_style_text_color(icon, lv_color_white(), 0);

    lv_obj_t *label = lv_label_create(tile);
    lv_label_set_text(label, label_text);
    lv_obj_set_style_text_color(label, lv_color_white(), 0);

    if (cb) lv_obj_add_event_cb(tile, cb, LV_EVENT_CLICKED, (void *)user_data);
    return tile;
}

static void main_tile_event_cb(lv_event_t *e) {
    const char *name = (const char *)lv_event_get_user_data(e);
    if (strcmp(name, "WiFi Scan & Attack") == 0)  show_scan_page();
    else if (strcmp(name, "Global WiFi Attacks") == 0) show_global_attacks_page();
    else if (strcmp(name, "Bluetooth") == 0) show_bluetooth_menu_page();
    // ...
}

// Semi-transparent overlay covering the whole screen
overlay = lv_obj_create(lv_scr_act());
lv_obj_remove_style_all(overlay);
lv_obj_set_size(overlay, lv_pct(100), lv_pct(100));
lv_obj_set_style_bg_color(overlay, lv_color_hex(0x000000), 0);
lv_obj_set_style_bg_opa(overlay, LV_OPA_50, 0);
lv_obj_clear_flag(overlay, LV_OBJ_FLAG_SCROLLABLE);
lv_obj_add_flag(overlay, LV_OBJ_FLAG_CLICKABLE);  // block clicks to background

// Centered popup
popup = lv_obj_create(overlay);
lv_obj_set_size(popup, POPUP_W, POPUP_H);
lv_obj_center(popup);
// ... add content to popup ...

if (bsp_display_lock(0)) {
    lv_label_set_text(status_label, "Connected!");
    bsp_display_unlock();
}