批量远程执行shell命令工具

使用示例（使用了默认用户root，和默认端口号22）：
./mooon_ssh --h=192.168.4.1,192.168.4.2 -P=password -c='cat /etc/hosts'

#include "mooon/net/libssh2.h" // 提供远程执行命令接口
#include "mooon/sys/error.h"
#include "mooon/sys/stop_watch.h"
#include "mooon/utils/args_parser.h"
#include "mooon/utils/print_color.h"
#include "mooon/utils/string_utils.h"
#include "mooon/utils/tokener.h"
#include <iostream>

// 被执行的命令，可为一条或多条命令，如：ls /&&whoami
STRING_ARG_DEFINE(c, "", "command to execute remotely");
// 逗号分隔的远程主机列表
STRING_ARG_DEFINE(h, "", "remote hosts");
// 远程主机的sshd端口号
INTEGER_ARG_DEFINE(uint16_t, p, 22, 10, 65535, "remote hosts port");
// 用户名
STRING_ARG_DEFINE(u, "root", "remote host user");
// 密码
STRING_ARG_DEFINE(P, "", "remote host password");

// 连接超时，单位为秒
INTEGER_ARG_DEFINE(uint16_t, t, 10, 1, 65535, "timeout seconds to remote host");

// 结果信息
struct ResultInfo
{
    bool success; // 为true表示执行成功
    std::string ip; // 远程host的IP地址
    uint32_t seconds; // 运行花费的时长，精确到秒

    ResultInfo()
        : success(false), seconds(0)
    {
    }

    std::string str() const
    {
        std::string tag = success? "SUCCESS": "FAILURE";
        return mooon::utils::CStringUtils::format_string("[%s %s]: %u seconds", ip.c_str(), tag.c_str(), seconds);
    }
};

inline std::ostream& operator <<(std::ostream& out, const struct ResultInfo& result)
{
    std::string tag = result.success? "SUCCESS": "FAILURE";
    out << "["PRINT_COLOR_YELLOW << result.ip << PRINT_COLOR_NONE" " << tag << "] " << result.seconds << " seconds";
    return out;
}

// 使用示例：
// mooon_ssh -u=root -P=test -p=2016 -h="127.0.0.1,192.168.0.1" -c='ls /tmp&&ps aux|grep -c test'
int main(int argc, char* argv[])
{
    // 解析命令行参数
    std::string errmsg;
    if (!mooon::utils::parse_arguments(argc, argv, &errmsg))
    {
        fprintf(stderr, "parameter error: %s
", errmsg.c_str());
        exit(1);
    }

    uint16_t port = mooon::argument::p->value();
    std::string commands = mooon::argument::c->value();
    std::string hosts = mooon::argument::h->value();
    std::string user = mooon::argument::u->value();
    std::string password = mooon::argument::P->value();
    mooon::utils::CStringUtils::trim(commands);
    mooon::utils::CStringUtils::trim(hosts);
    mooon::utils::CStringUtils::trim(user);
    mooon::utils::CStringUtils::trim(password);

    // 检查参数（-c）
    if (commands.empty())
    {
        fprintf(stderr, "parameter[-c]'s value not set
");
        exit(1);
    }

    // 检查参数（-h）
    if (hosts.empty())
    {
        // 尝试从环境变量取值
        const char* hosts_ = getenv("HOSTS");
        if (NULL == hosts_)
        {
            fprintf(stderr, "parameter[-h]'s value not set
");
            exit(1);
        }

        hosts= hosts_;
        mooon::utils::CStringUtils::trim(hosts);
        if (hosts.empty())
        {
            fprintf(stderr, "parameter[-h]'s value not set
");
            exit(1);
        }
    }

    // 检查参数（-u）
    if (user.empty())
    {
        fprintf(stderr, "parameter[-u]'s value not set
");
        exit(1);
    }

    // 检查参数（-P）
    if (password.empty())
    {
        fprintf(stderr, "parameter[-P]'s value not set
");
        exit(1);
    }

    std::vector<std::string> hosts_ip;
    const std::string& remote_hosts_ip = hosts;
    int num_remote_hosts_ip = mooon::utils::CTokener::split(&hosts_ip, remote_hosts_ip, ",", true);
    if (0 == num_remote_hosts_ip)
    {
        fprintf(stderr, "parameter[-h] error
");
        exit(1);
    }

    std::vector<struct ResultInfo> results(num_remote_hosts_ip);
    for (int i=0; i<num_remote_hosts_ip; ++i)
    {
        bool color = true;
        int num_bytes = 0;
        int exitcode = 0;
        std::string exitsignal;
        std::string errmsg;
        const std::string& remote_host_ip = hosts_ip[i];
        results[i].ip = remote_host_ip;

        fprintf(stdout, "["PRINT_COLOR_YELLOW"%s"PRINT_COLOR_NONE"]
", remote_host_ip.c_str());
        fprintf(stdout, PRINT_COLOR_GREEN);

        mooon::sys::CStopWatch stop_watch;
        try
        {
            mooon::net::CLibssh2 libssh2(remote_host_ip, port, user, password, mooon::argument::t->value());

            libssh2.remotely_execute(commands, std::cout, &exitcode, &exitsignal, &errmsg, &num_bytes);
            fprintf(stdout, PRINT_COLOR_NONE);
            color = false; // color = true;

            if ((0 == exitcode) && exitsignal.empty())
            {
                results[i].success = true;
                fprintf(stdout, "["PRINT_COLOR_YELLOW"%s"PRINT_COLOR_NONE"] SUCCESS
", remote_host_ip.c_str());
            }
            else
            {
                results[i].success = false;

                if (exitcode != 0)
                {
                    fprintf(stderr, "%d: %s
", exitcode, mooon::sys::Error::to_string(exitcode).c_str());
                }
                else if (!exitsignal.empty())
                {
                    fprintf(stderr, "%s: %s
", exitsignal.c_str(), errmsg.c_str());
                }
            }
        }
        catch (mooon::sys::CSyscallException& ex)
        {
            if (color)
                fprintf(stdout, PRINT_COLOR_NONE); // color = true;

            fprintf(stderr, "["PRINT_COLOR_RED"%s"PRINT_COLOR_NONE"] failed: %s
", remote_host_ip.c_str(), ex.str().c_str());
        }
        catch (mooon::utils::CException& ex)
        {
            if (color)
                fprintf(stdout, PRINT_COLOR_NONE); // color = true;

            fprintf(stderr, "["PRINT_COLOR_RED"%s"PRINT_COLOR_NONE"] failed: %s
", remote_host_ip.c_str(), ex.str().c_str());
        }

        results[i].seconds = stop_watch.get_elapsed_microseconds() / 1000000;
        std::cout << std::endl;
    } // for

    // 输出总结
    std::cout << std::endl;
    std::cout << "================================" << std::endl;
    int num_success = 0; // 成功的个数
    int num_failure = 0; // 失败的个数
    for (std::vector<struct ResultInfo>::size_type i=0; i<results.size(); ++i)
    {
        const struct ResultInfo& result_info = results[i];
        std::cout << result_info << std::endl;

        if (result_info.success)
            ++num_success;
        else
            ++num_failure;
    }
    std::cout << "SUCCESS: " << num_success << ", FAILURE: " << num_failure << std::endl;

    return 0;
}