bigsnitch/session.h

#pragma once

#include <QObject>
#include <includes.h>
#include <httpflow.h>
#include <optional>

class Session : public QObject
{
    Q_OBJECT
private:
    const char* create_request_tbl = R"rstr( CREATE TABLE request(
                                     id INTEGER PRIMARY KEY AUTOINCREMENT,
                                     server_conn_id TEXT,
                                     server_ip_address TEXT,
                                     tls INTEGER,
                                     content TEXT,
                                     scheme TEXT,
                                     method TEXT,
                                     host TEXT,
                                     address TEXT,
                                     port INTEGER,
                                     http_version TEXT,
                                     path TEXT,
                                     timestamp_start REAL,
                                     timestamp_end REAL,
                                     error TEXT
                                     ); )rstr";
    const char* create_request_header_tbl = R"rstr( CREATE TABLE request_header(
                                            id INTEGER PRIMARY KEY AUTOINCREMENT,
                                            key TEXT,
                                            value TEXT,
                                            request_id INTEGER,
                                            FOREIGN KEY(request_id) REFERENCES request(referer_id) ON UPDATE CASCADE ON DELETE CASCADE
                                            ); )rstr";
    const char* create_response_tbl = R"rstr( CREATE TABLE response(
                                      id INTEGER PRIMARY KEY AUTOINCREMENT,
                                      status_code INTEGER,
                                      http_version TEXT,
                                      reason TEXT,
                                      content TEXT,
                                      timestamp_start REAL,
                                      timestamp_end REAL
                                      ); )rstr";
    const char* create_response_header_tbl = R"rstr( CREATE TABLE response_header(
                                             id INTEGER PRIMARY KEY AUTOINCREMENT,
                                             key TEXT,
                                             value TEXT,
                                             response_id INTEGER,
                                             FOREIGN KEY(response_id) REFERENCES response(referer_id) ON UPDATE CASCADE ON DELETE CASCADE
                                             ); )rstr";
    const char* create_flow_tbl = R"rstr( CREATE TABLE flow(
                                  id INTEGER PRIMARY KEY AUTOINCREMENT,
                                  uid TEXT UNIQUE NOT NULL,
                                  request_id INTEGER,
                                  response_id INTEGER,
                                  FOREIGN KEY(request_id) REFERENCES request(id) ON UPDATE CASCADE ON DELETE CASCADE,
                                  FOREIGN KEY(response_id) REFERENCES response(id) ON UPDATE CASCADE ON DELETE CASCADE
                                  ); )rstr";
    const char* create_setting_tbl = R"rstr( CREATE TABLE setting(
                                     key TEXT UNIQUE NOT NULL PRIMARY KEY,
                                     value TEXT
                                     ); )rstr";

    const char* get_tbl = R"rstr( SELECT name FROM sqlite_master WHERE type='table' AND name=?; )rstr";
    const char* get_setting = R"rstr( SELECT value FROM setting WHERE key=?; )rstr";

    const char* insert_request = R"rstr( INSERT INTO request (server_ip_address, tls, content, scheme, method, host, address, port, http_version, path, timestamp_start, timestamp_end, error) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?); )rstr";
    const char* insert_request_header = R"rstr( INSERT INTO request_header (key, value, request_id) VALUES (?,?,?); )rstr";
    const char* insert_response = R"rstr( INSERT INTO response (status_code, http_version, reason, content, timestamp_start, timestamp_end) VALUES (?,?,?,?,?,?); )rstr";
    const char* insert_response_header = R"rstr( INSERT INTO response_header (key, value, response_id) VALUES (?,?,?); )rstr";
    const char* insert_flow = R"rstr( INSERT INTO flow (uid, request_id, response_id) VALUES (?,?,?); )rstr";
    const char* insert_setting = R"rstr( INSERT INTO setting (key, value) VALUES (?,?); )rstr";

    const char* update_setting = R"rstr( UPDATE setting SET value=? WHERE key=?; )rstr";

    sqlite3* db = nullptr;
    bool loaded = false;

    sqlite3_stmt* stmt_get_setting = nullptr;

    sqlite3_stmt* stmt_insert_request = nullptr;
    sqlite3_stmt* stmt_insert_request_header = nullptr;
    sqlite3_stmt* stmt_insert_response = nullptr;
    sqlite3_stmt* stmt_insert_response_header = nullptr;
    sqlite3_stmt* stmt_insert_flow = nullptr;
    sqlite3_stmt* stmt_insert_setting = nullptr;

    sqlite3_stmt* stmt_update_setting = nullptr;

    void open_db(std::filesystem::path path);
    void prepare_tables();
    void prepare(const char* query, sqlite3_stmt** stmt);
    bool prepare_and_exec(const char* query);
    void bind_text(sqlite3_stmt* stmt, int id, std::string text);
    bool table_exists(std::string name);
public:
    explicit Session(QObject *parent = nullptr);
    ~Session();

    void load(std::filesystem::path path);
    void unload();
    bool isLoaded();
    std::optional<std::string> getSetting(std::string key);
public slots:
    int saveRequest(http::Flow flow);
    int saveRequestHeader(std::string key, std::string value, int id);
    int saveResponse(http::Flow flow);
    int saveResponseHeader(std::string key, std::string value, int id);
    int saveFlow(http::Flow flow);
    bool saveSetting(std::string key, std::string value);
signals:

};