C++ 通过SQLite实现命令行工具-编程知识

本文介绍了一个基于 C++、SQLite 和 Boost 库的简单交互式数据库操作 Shell。该 Shell 允许用户通过命令行输入执行各种数据库操作，包括添加、删除主机信息，设置主机到特定主机组，以及显示主机和主机组列表。通过调用 SQLite3 库实现数据库连接和操作，以及使用 Boost 库进行字符串解析和格式化。该交互式 Shell 提供了一些基本的命令，使用户能够方便地管理主机信息和组织结构。代码结构清晰，易于理解，可根据需要扩展和定制功能。

数据库的基本使用方法请看《C/C++ 通过SQLiteSDK增删改查》这篇文章，针对如何使用Boost解析命令行参数请看《4.9 C++ Boost 命令行解析库》这篇文章，此处只给出实现代码，如下所示；

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <map>
#include <vector>
#include <time.h>
#include "sqlite3.h"#include <boost/format.hpp>
#include <boost/tokenizer.hpp>
#include <boost/lexical_cast.hpp>using namespace std;
using namespace boost;sqlite3* open_database(std::string database_name)
{int ref = -1;sqlite3 *db = 0;ref = sqlite3_open(database_name.c_str(), &db);if (ref == SQLITE_OK)return db;return false;
}
bool close_database(sqlite3 *db)
{int ref = sqlite3_close(db);if (ref == SQLITE_OK)return true;return false;
}
bool exec_sql(sqlite3 *db, char *sql)
{char *error_code = 0;int ref = sqlite3_exec(db, sql, 0, 0, &error_code);if (ref == SQLITE_OK){return true;}return false;
}// 初始化创建表结构
void Init_Database()
{sqlite3* open_db = open_database("./database.db");if (open_db != false){std::string sql ="create table HostDB(""uid primary key,""host_address char(128) not null,""host_username char(128) not null,""host_password char(128) not null,""host_port char(128) not null,""host_group char(128) not null default 'DefaultGroup'"");";char run_sql[1024] = { 0 };strcpy(run_sql, sql.c_str());exec_sql(open_db, run_sql);}close_database(open_db);
}// 增加一条主机记录
void AddHost_DB(sqlite3* open_db, std::string address, std::string username, std::string password, std::string port)
{std::string format_string = boost::str(boost::format("insert into HostDB(host_address,host_username,host_password,host_port) values('%s','%s','%s','%s');") % address %username %password %port);char run_sql[2048] = { 0 };strcpy(run_sql, format_string.c_str());bool ref = exec_sql(open_db, run_sql);if (ref == true){std::cout << "[+] 增加主机: " << address << " 完成" << std::endl;}
}// 删除特定主机记录
void DeleteHost_DB(sqlite3 *open_db, std::string address)
{std::string format_string = boost::str(boost::format("delete from HostDB where host_address = '%s';") % address);char run_sql[2048] = { 0 };strcpy(run_sql, format_string.c_str());bool ref = exec_sql(open_db, run_sql);if (ref == true){std::cout << "[-] 删除主机: " << address << " 完成" << std::endl;}
}// 将特定主机加入到特定主机组
void SetHostGroup_DB(sqlite3* open_db, std::string address, std::string group_name)
{std::string format_string = boost::str(boost::format("update HostDB set host_group='%s' where host_address = '%s';") % group_name %address);char run_sql[2048] = { 0 };strcpy(run_sql, format_string.c_str());bool ref = exec_sql(open_db, run_sql);if (ref == true){std::cout << "[+] 主机: " << address << " 已加入到: " << group_name << " 组" << std::endl;}
}// 输出所有主机组
void ShowHostGroup_DB(sqlite3 *open_db)
{sqlite3_stmt *stmt = 0;// std::string format_string = "SELECT distinct(host_group) FROM 'HostDB';";std::string format_string = "SELECT host_group,count(*) FROM HostDB GROUP BY host_group;";char run_sql[1024] = { 0 };strcpy(run_sql, format_string.c_str());int ref = sqlite3_prepare_v2(open_db, run_sql, -1, &stmt, 0);if (ref == SQLITE_OK){while (sqlite3_step(stmt) == SQLITE_ROW){const unsigned char *host_group = sqlite3_column_text(stmt, 0);int host_group_count = sqlite3_column_int(stmt, 1);std::cout << host_group << "                    " << host_group_count << std::endl;}}sqlite3_finalize(stmt);
}// 输出所有主机
void ShowHost_DB(sqlite3 *open_db)
{sqlite3_stmt *stmt = 0;std::string format_string = "select * from HostDB;";char run_sql[1024] = { 0 };strcpy(run_sql, format_string.c_str());int ref = sqlite3_prepare_v2(open_db, run_sql, -1, &stmt, 0);if (ref == SQLITE_OK){while (sqlite3_step(stmt) == SQLITE_ROW){const unsigned char *host_address = sqlite3_column_text(stmt, 1);const unsigned char *host_username = sqlite3_column_text(stmt, 2);const unsigned char *host_paddword = sqlite3_column_text(stmt, 3);const unsigned char *host_port = sqlite3_column_text(stmt, 4);const unsigned char *host_group = sqlite3_column_text(stmt, 5);std::cout << host_address << "     "<< host_username << "     "<< host_paddword << "     "<< host_port << "     "<< host_group << std::endl;}}sqlite3_finalize(stmt);
}// 输出特定主机组中的主机
void ShowGroupHostList(sqlite3 *open_db, std::string group_name)
{sqlite3_stmt *stmt = 0;std::string format_string = boost::str(boost::format("select * from HostDB where host_group = '%s';") % group_name);char run_sql[2048] = { 0 };strcpy(run_sql, format_string.c_str());int ref = sqlite3_prepare_v2(open_db, run_sql, -1, &stmt, 0);if (ref == SQLITE_OK){std::cout << "----------------------------------------------------------" << std::endl;std::cout << "主机组: " << group_name << std::endl;std::cout << "----------------------------------------------------------" << std::endl;while (sqlite3_step(stmt) == SQLITE_ROW){const unsigned char *host_address = sqlite3_column_text(stmt, 1);const unsigned char *host_username = sqlite3_column_text(stmt, 2);const unsigned char *host_port = sqlite3_column_text(stmt, 4);std::cout << host_address << "     "<< host_username << "     "<< host_port << std::endl;}}sqlite3_finalize(stmt);
}int main(int argc, char const *argv[])
{sqlite3* open_db = open_database("./database.db");Init_Database();std::string command;while (1){std::cout << "[ LyShark Shell ] # ";std::getline(std::cin, command);if (command.length() == 0){continue;}else if (command == "help"){std::cout << "帮助菜单" << std::endl;}else{boost::char_separator<char> sep(", --");typedef boost::tokenizer<boost::char_separator<char>> CustonTokenizer;CustonTokenizer tok(command, sep);std::vector<std::string> vecSegTag;for (CustonTokenizer::iterator beg = tok.begin(); beg != tok.end(); ++beg){vecSegTag.push_back(*beg);}if (vecSegTag.size() == 9 && vecSegTag[0] == "AddHost"){if (vecSegTag[1] == "address" && vecSegTag[3] == "username" && vecSegTag[5] == "password" && vecSegTag[7] == "port"){std::string set_address = vecSegTag[2];std::string set_username = vecSegTag[4];std::string set_password = vecSegTag[6];std::string set_port = vecSegTag[8];AddHost_DB(open_db, set_address, set_username, set_password, set_port);}}else if (vecSegTag.size() == 3 && vecSegTag[0] == "DeleteHost"){if (vecSegTag[1] == "address"){std::string set_address = vecSegTag[2];DeleteHost_DB(open_db, set_address);}}else if (vecSegTag.size() == 5 && vecSegTag[0] == "SetHostGroup"){if (vecSegTag[1] == "address" && vecSegTag[3] == "group"){std::string set_address = vecSegTag[2];std::string set_group = vecSegTag[4];SetHostGroup_DB(open_db, set_address, set_group);}}else if (vecSegTag.size() == 1 && vecSegTag[0] == "ShowHost"){std::cout << "-----------------------------------------------------------------------------" << std::endl;std::cout << "IP地址     " << "用户名     " << "密码     " << "端口号     " << "默认组     " << std::endl;std::cout << "-----------------------------------------------------------------------------" << std::endl;ShowHost_DB(open_db);}else if (vecSegTag.size() == 1 && vecSegTag[0] == "ShowHostGroup"){std::cout << "-----------------------------------------------------------------------------" << std::endl;std::cout << "主机组名     " << "主机数量     " << std::endl;std::cout << "-----------------------------------------------------------------------------" << std::endl;ShowHostGroup_DB(open_db);}else if (vecSegTag.size() == 3 && vecSegTag[0] == "ShowGroupHostList"){if (vecSegTag[1] == "group"){std::string set_group = vecSegTag[2];ShowGroupHostList(open_db, set_group);}}}}close_database(open_db);return 0;
}