C/C++编程:libssh2学习(linux + clion + cmake)

文章目录

  • 环境配置
  • 使用
    • 使用libssh2库实现支持密码参数的ssh2客户端
    • 显示如何进行SSH2连接的示例
    • 到目标主机上执行命令
  • 参考

环境配置

1、官网
2、下载地址
C/C++编程:libssh2学习(linux + clion + cmake)_第1张图片

3、开始:

$ wget https://www.libssh2.org/snapshots/libssh2-1.9.0-20210118.tar.gz

$ tar -xvf libssh2-1.9.0-20210118.tar.gz

$ cd libssh2-1.9.0-20210118/


// 前提是系统中有了 autoconf, automake and libtool 
$ autoreconf -fi
$ ./configure
$ make

使用

使用libssh2库实现支持密码参数的ssh2客户端

工具:clion

1、创建一个工程
C/C++编程:libssh2学习(linux + clion + cmake)_第2张图片

2、cmakelist

cmake_minimum_required(VERSION 3.16)
project(ssh2_learn)

set(CMAKE_CXX_STANDARD 11)
include_directories(/usr/local/include)
link_directories(/usr/local/lib)
add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries (${PROJECT_NAME}   -lssh2)

3、main.cpp


#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

#include 

#define COPYRIGHT "jnSSH2 v1.0\nCopyright (C) 2011 Niu.Chenguang \n\n"

struct termios _saved_tio;
int tio_saved = 0;

static int _raw_mode(void)
{
    int rc;
    struct termios tio;

    rc = tcgetattr(fileno(stdin), &tio);
    if (rc != -1) {
        _saved_tio = tio;
        tio_saved = 1;
        cfmakeraw(&tio);
        rc = tcsetattr(fileno(stdin), TCSADRAIN, &tio);
    }

    return rc;
}

static int _normal_mode(void)
{
    if (tio_saved)
        return tcsetattr(fileno(stdin), TCSADRAIN, &_saved_tio);

    return 0;
}

int main (int argc, char *argv[])
{
    int sock = 0;
    unsigned long hostaddr = 0;
    short port = 22;
    char *username = NULL;
    char *password = NULL;
    struct sockaddr_in sin;
    LIBSSH2_SESSION *session;
    LIBSSH2_CHANNEL *channel;
    int nfds = 1;
    char buf;
    LIBSSH2_POLLFD *fds = NULL;

    /* Struct winsize for term size */
    struct winsize w_size;
    struct winsize w_size_bck;

    /* For select on stdin */
    fd_set set;
    struct timeval timeval_out;
    timeval_out.tv_sec = 0;
    timeval_out.tv_usec = 10;

    printf(COPYRIGHT);

    if (argc > 4) {
        hostaddr = inet_addr(argv[1]);
        port = htons(atoi(argv[2]));
        username = argv[3];
        password = argv[4];
    }
    else {
        fprintf(stderr, "Usage: %s ip port user password\n", basename(argv[0]));
        return -1;
    }

    if (libssh2_init (0) != 0) {
        fprintf (stderr, "libssh2 initialization failed\n");
        return -1;
    }

    sock = socket (AF_INET, SOCK_STREAM, 0);
    sin.sin_family = AF_INET;
    sin.sin_port = port;
    sin.sin_addr.s_addr = hostaddr;
    if (connect(sock, (struct sockaddr *) &sin, sizeof(struct sockaddr_in)) != 0) {
        fprintf (stderr, "Failed to established connection!\n");
        return -1;
    }

    /* Open a session */
    session = libssh2_session_init();
    if (libssh2_session_startup (session, sock) != 0) {
        fprintf(stderr, "Failed Start the SSH session\n");
        return -1;
    }

    /* Authenticate via password */
    if (libssh2_userauth_password(session, username, password) != 0) {
        fprintf(stderr, "Failed to authenticate\n");
        close(sock);
        goto ERROR;
    }

    /* Open a channel */
    channel = libssh2_channel_open_session(session);

    if ( channel == NULL ) {
        fprintf(stderr, "Failed to open a new channel\n");
        close(sock);
        goto ERROR;
    }

    /* Request a PTY */
    if (libssh2_channel_request_pty( channel, "xterm") != 0) {
        fprintf(stderr, "Failed to request a pty\n");
        close(sock);
        goto ERROR;
    }

    /* Request a shell */
    if (libssh2_channel_shell(channel) != 0) {
        fprintf(stderr, "Failed to open a shell\n");
        close(sock);
        goto ERROR;
    }

    if (_raw_mode() != 0) {
        fprintf(stderr, "Failed to entered in raw mode\n");
        close(sock);
        goto ERROR;
    }

    while (1) {
        FD_ZERO(&set);
        FD_SET(fileno(stdin),&set);

        ioctl(fileno(stdin), TIOCGWINSZ, &w_size);
        if ((w_size.ws_row != w_size_bck.ws_row) ||
            (w_size.ws_col != w_size_bck.ws_col)) {
            w_size_bck = w_size;
            libssh2_channel_request_pty_size(channel, w_size.ws_col, w_size.ws_row);
        }

        if ((fds = static_cast<LIBSSH2_POLLFD *>(malloc(sizeof(LIBSSH2_POLLFD)))) == NULL)
            break;

        fds[0].type = LIBSSH2_POLLFD_CHANNEL;
        fds[0].fd.channel = channel;
        fds[0].events = LIBSSH2_POLLFD_POLLIN;
        fds[0].revents = LIBSSH2_POLLFD_POLLIN;

        if (libssh2_poll(fds, nfds, 0) >0) {
            libssh2_channel_read(channel, &buf, 1);
            fprintf(stdout, "%c", buf);
            fflush(stdout);
        }

        if (select(fileno(stdin)+1,&set,NULL,NULL,&timeval_out) > 0)
            if (read(fileno(stdin), &buf, 1) > 0)
                libssh2_channel_write(channel, &buf, 1);

        free (fds);

        if (libssh2_channel_eof(channel) == 1)
            break;
    }

    if (channel) {
        libssh2_channel_free (channel);
        channel = NULL;
    }

    _normal_mode();

    libssh2_exit();

    return 0;
    ERROR:
    libssh2_session_disconnect(session, "Session Shutdown, Thank you for playing");
    libssh2_session_free(session);
    return -1;
}

C/C++编程:libssh2学习(linux + clion + cmake)_第3张图片

使用libssh2库实现支持密码参数的ssh2客户端

显示如何进行SSH2连接的示例

https://github.com/libssh2/libssh2/blob/master/example/ssh2.c

工具:clion

1、创建一个工程,并将源码中的libssh2_config.h复制到目录中 (\libssh2-1.8.2\example\libssh2_config.h-----编译成功后libssh2_config.h.in生成的)

C/C++编程:libssh2学习(linux + clion + cmake)_第4张图片

2、cmakelist

cmake_minimum_required(VERSION 3.16)
project(ssh2_learn)

set(CMAKE_CXX_STANDARD 11)
include_directories(/usr/local/include)
link_directories(/usr/local/lib)
add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries (${PROJECT_NAME}   -lssh2)

3、main.cpp

/*
 *显示如何进行SSH2连接的示例。
 *
 *示例代码具有主机名,用户名,密码
 *和复制路径的默认值,但是您可以在命令行上指定它们,例如:
 *
 * "ssh2 host user password [-p|-i|-k]"
 */

#include "libssh2_config.h"
#include 
#include 

#ifdef HAVE_WINDOWS_H
#include 
#endif
#ifdef HAVE_WINSOCK2_H
#include 
#endif
#ifdef HAVE_SYS_SOCKET_H
#include 
#endif
#ifdef HAVE_NETINET_IN_H
#include 
#endif
#ifdef HAVE_UNISTD_H
#include 
#endif
#ifdef HAVE_ARPA_INET_H
#include 
#endif

#include 
#include 
#include 
#include 
#include 


const char *keyfile1 = "~/.ssh/id_rsa.pub";
const char *keyfile2 = "~/.ssh/id_rsa";
const char *username = "username";
const char *password = "password";


static void kbd_callback(const char *name, int name_len,
                         const char *instruction, int instruction_len,
                         int num_prompts,
                         const LIBSSH2_USERAUTH_KBDINT_PROMPT *prompts,
                         LIBSSH2_USERAUTH_KBDINT_RESPONSE *responses,
                         void **abstract)
{
    (void)name;
    (void)name_len;
    (void)instruction;
    (void)instruction_len;
    if(num_prompts == 1) {
        responses[0].text = strdup(password);
        responses[0].length = strlen(password);
    }
    (void)prompts;
    (void)abstract;
} /* kbd_callback */


int main(int argc, char *argv[])
{
    unsigned long hostaddr;
    int rc, sock, i, auth_pw = 0;
    struct sockaddr_in sin;
    const char *fingerprint;
    char *userauthlist;
    LIBSSH2_SESSION *session;
    LIBSSH2_CHANNEL *channel;

#ifdef WIN32
    WSADATA wsadata;
    int err;

    err = WSAStartup(MAKEWORD(2, 0), &wsadata);
    if(err != 0) {
        fprintf(stderr, "WSAStartup failed with error: %d\n", err);
        return 1;
    }
#endif

    if(argc > 1) {
        hostaddr = inet_addr(argv[1]);
    }
    else {
        hostaddr = htonl(0x7F000001);
    }

    if(argc > 2) {
        username = argv[2];
    }
    if(argc > 3) {
        password = argv[3];
    }


    rc = libssh2_init(0);

    if(rc != 0) {
        fprintf(stderr, "libssh2 initialization failed (%d)\n", rc);
        return 1;
    }

    /* Ultra basic "connect to port 22 on localhost".
     *     负责创建建立连接的socket
     */
    sock = socket(AF_INET, SOCK_STREAM, 0);

    sin.sin_family = AF_INET;
    sin.sin_port = htons(22);
    sin.sin_addr.s_addr = hostaddr;
    if(connect(sock, (struct sockaddr*)(&sin),
               sizeof(struct sockaddr_in)) != 0) {
        fprintf(stderr, "failed to connect!\n");
        return -1;
    }

    /*
     * 创建一个会话实例并启动它:初始化一个ssh连接
     */
    session = libssh2_session_init();
    if(libssh2_session_handshake(session, sock)) {
        fprintf(stderr, "无法建立SSH会话\n");
        return -1;
    }

    /*至此,我们尚未通过身份验证。
     * 要做的第一件事是针对我们已知的主机检查主机密钥的指纹
     */
    fingerprint = libssh2_hostkey_hash(session, LIBSSH2_HOSTKEY_HASH_SHA1);
    fprintf(stderr, "Fingerprint: ");
    for(i = 0; i < 20; i++) {
        fprintf(stderr, "%02X ", (unsigned char)fingerprint[i]);
    }
    fprintf(stderr, "\n");

    /* 检查可用的身份验证方法 */
    userauthlist = libssh2_userauth_list(session, username, strlen(username));
    fprintf(stderr, "身份验证方法: %s\n", userauthlist);
    if(strstr(userauthlist, "password") != NULL) {
        auth_pw |= 1;
    }
    if(strstr(userauthlist, "keyboard-interactive") != NULL) {
        auth_pw |= 2;
    }
    if(strstr(userauthlist, "publickey") != NULL) {
        auth_pw |= 4;
    }

    /* 如果在参数列表中设置了认证方式,则将认证方式设为命令中的方式(前提是该方式是通过上个步骤检测可用的) */
    if(argc > 4) {
        if((auth_pw & 1) && !strcasecmp(argv[4], "-p")) {
            auth_pw = 1;
        }
        if((auth_pw & 2) && !strcasecmp(argv[4], "-i")) {
            auth_pw = 2;
        }
        if((auth_pw & 4) && !strcasecmp(argv[4], "-k")) {
            auth_pw = 4;
        }
    }

    // 根据上一步选定的认证方式开始认证。
    if(auth_pw & 1) {
        /* We could authenticate via password */
        if(libssh2_userauth_password(session, username, password)) {

            fprintf(stderr, "\tAuthentication by password failed!\n");
            goto shutdown;
        }
        else {
            fprintf(stderr, "\tAuthentication by password succeeded.\n");
        }
    }
    else if(auth_pw & 2) {
        /* Or via keyboard-interactive */
        if(libssh2_userauth_keyboard_interactive(session, username,

                                                 &kbd_callback) ) {
            fprintf(stderr,
                    "\tAuthentication by keyboard-interactive failed!\n");
            goto shutdown;
        }
        else {
            fprintf(stderr,
                    "\tAuthentication by keyboard-interactive succeeded.\n");
        }
    }
    else if(auth_pw & 4) {
        /* Or by public key */
        if(libssh2_userauth_publickey_fromfile(session, username, keyfile1,

                                               keyfile2, password)) {
            fprintf(stderr, "\tAuthentication by public key failed!\n");
            goto shutdown;
        }
        else {
            fprintf(stderr, "\t通过公钥验证成功.\n");
        }
    }
    else {
        fprintf(stderr, "未找到支持的身份验证方法!\n");
        goto shutdown;
    }

    /* 请求一个shell */
    channel = libssh2_channel_open_session(session);

    if(!channel) {
        fprintf(stderr, "无法打开会话\n");
        goto shutdown;
    }

    /* 设置一些环境变量,并上传给服务器
     */
    libssh2_channel_setenv(channel, "FOO", "bar");


    /* 请求一个vanilla的终端模拟
     * 有关更多选项,请参见/etc/termcap
     */
    if(libssh2_channel_request_pty(channel, "vanilla")) {

        fprintf(stderr, "请求pty失败\n");
        goto skip_shell;
    }

    /* 在上一步请求的pty上开启SHELL */
    if(libssh2_channel_shell(channel)) {

        fprintf(stderr, "无法在分配的pty上请求shell \n");
        goto shutdown;
    }

    /* 至此,可以交互使用shell了
     * libssh2_channel_read()
     * libssh2_channel_read_stderr()
     * libssh2_channel_write()
     * libssh2_channel_write_stderr()
     *
     * Blocking mode may be (en|dis)abled with(打开或关闭阻塞模式): libssh2_channel_set_blocking()
     * 如果服务器发送EOF, libssh2_channel_eof() 将返回非0
     * 要向服务器发送EOF,请使用: libssh2_channel_send_eof()
     * 可以使用以下命令关闭通道: libssh2_channel_close()
     * 可以使用以下命令释放通道: libssh2_channel_free()
     */

    skip_shell:
    if(channel) {
        libssh2_channel_free(channel);
        channel = NULL;
    }

    /* 通过以下方式支持其他通道类型:
     * libssh2_scp_send()
     * libssh2_scp_recv2()
     * libssh2_channel_direct_tcpip()
     */

    //ssh交互完成后,关闭会话并释放会话
    shutdown:

    libssh2_session_disconnect(session,

                               "正常关机,感谢您的参与");
    libssh2_session_free(session);


    //关闭sock并退出libssh2
#ifdef WIN32
    closesocket(sock);
#else
    close(sock);
#endif
    fprintf(stderr, "全部完成!\n");

    libssh2_exit();


    return 0;
}

C/C++编程:libssh2学习(linux + clion + cmake)_第5张图片

到目标主机上执行命令

此例子为源码中的例子: https://github.com/libssh2/libssh2/blob/master/example/ssh2_exec.c

工具:clion

1、创建一个工程,并将源码中的libssh2_config.h复制到目录中

C/C++编程:libssh2学习(linux + clion + cmake)_第6张图片

2、cmakelist

cmake_minimum_required(VERSION 3.16)
project(ssh2_learn)

set(CMAKE_CXX_STANDARD 11)
include_directories(/usr/local/include)
link_directories(/usr/local/lib)
add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries (${PROJECT_NAME}   -lssh2)

3、将https://github.com/libssh2/libssh2/blob/master/example/ssh2_exec.c拷贝到main.cpp中

/*
 * Sample showing how to use libssh2 to execute a command remotely.
 *
 * The sample code has fixed values for host name, user name, password
 * and command to run.
 *
 * Run it like this:
 *
 * $ ./ssh2_exec 127.0.0.1 user password "uptime"
 *
 */

#include "libssh2_config.h"
#include 

#ifdef HAVE_WINSOCK2_H
#include 
#endif
#ifdef HAVE_SYS_SOCKET_H
#include 
#endif
#ifdef HAVE_NETINET_IN_H
#include 
#endif
#ifdef HAVE_SYS_SELECT_H
#include 
#endif
#ifdef HAVE_UNISTD_H
#include 
#endif
#ifdef HAVE_ARPA_INET_H
#include 
#endif

#include 
#include 
#include 
#include 
#include 
#include 
#include 

static int waitsocket(int socket_fd, LIBSSH2_SESSION *session)
{
    struct timeval timeout;
    int rc;
    fd_set fd;
    fd_set *writefd = NULL;
    fd_set *readfd = NULL;
    int dir;

    timeout.tv_sec = 10;
    timeout.tv_usec = 0;

    FD_ZERO(&fd);

    FD_SET(socket_fd, &fd);

    /* now make sure we wait in the correct direction */
    dir = libssh2_session_block_directions(session);


    if(dir & LIBSSH2_SESSION_BLOCK_INBOUND)
        readfd = &fd;

    if(dir & LIBSSH2_SESSION_BLOCK_OUTBOUND)
        writefd = &fd;

    rc = select(socket_fd + 1, readfd, writefd, NULL, &timeout);

    return rc;
}

int main(int argc, char *argv[])
{
    const char *hostname = "127.0.0.1";
    const char *commandline = "uptime";
    const char *username    = "user";
    const char *password    = "password";
    unsigned long hostaddr;
    int sock;
    struct sockaddr_in sin;
    const char *fingerprint;
    LIBSSH2_SESSION *session;
    LIBSSH2_CHANNEL *channel;
    int rc;
    int exitcode;
    char *exitsignal=(char *)"none";
    int bytecount = 0;
    size_t len;
    LIBSSH2_KNOWNHOSTS *nh;
    int type;

#ifdef WIN32
    WSADATA wsadata;
    WSAStartup(MAKEWORD(2,0), &wsadata);
#endif
    if (argc > 1)
        /* must be ip address only */
        hostname = argv[1];

    if (argc > 2) {
        username = argv[2];
    }
    if (argc > 3) {
        password = argv[3];
    }
    if (argc > 4) {
        commandline = argv[4];
    }

    rc = libssh2_init (0);

    if (rc != 0) {
        fprintf (stderr, "libssh2 initialization failed (%d)\n", rc);
        return 1;
    }

    hostaddr = inet_addr(hostname);

    /* Ultra basic "connect to port 22 on localhost"
     * Your code is responsible for creating the socket establishing the
     * connection
     */
    sock = socket(AF_INET, SOCK_STREAM, 0);

    sin.sin_family = AF_INET;
    sin.sin_port = htons(22);
    sin.sin_addr.s_addr = hostaddr;
    if (connect(sock, (struct sockaddr*)(&sin),
                sizeof(struct sockaddr_in)) != 0) {
        fprintf(stderr, "failed to connect!\n");
        return -1;
    }

    /* Create a session instance */
    session = libssh2_session_init();

    if (!session)
        return -1;

    /* tell libssh2 we want it all done non-blocking */
    libssh2_session_set_blocking(session, 0);


    /* ... start it up. This will trade welcome banners, exchange keys,
     * and setup crypto, compression, and MAC layers
     */
    while ((rc = libssh2_session_handshake(session, sock)) ==

           LIBSSH2_ERROR_EAGAIN);
    if (rc) {
        fprintf(stderr, "Failure establishing SSH session: %d\n", rc);
        return -1;
    }

    nh = libssh2_knownhost_init(session);

    if(!nh) {
        /* eeek, do cleanup here */
        return 2;
    }

    /* read all hosts from here */
    libssh2_knownhost_readfile(nh, "known_hosts",

                               LIBSSH2_KNOWNHOST_FILE_OPENSSH);

    /* store all known hosts to here */
    libssh2_knownhost_writefile(nh, "dumpfile",

                                LIBSSH2_KNOWNHOST_FILE_OPENSSH);

    fingerprint = libssh2_session_hostkey(session, &len, &type);

    if(fingerprint) {
        struct libssh2_knownhost *host;
#if LIBSSH2_VERSION_NUM >= 0x010206
        /* introduced in 1.2.6 */
        int check = libssh2_knownhost_checkp(nh, hostname, 22,

                                             fingerprint, len,
                                             LIBSSH2_KNOWNHOST_TYPE_PLAIN|
                                             LIBSSH2_KNOWNHOST_KEYENC_RAW,
                                             &host);
#else
        /* 1.2.5 or older */
        int check = libssh2_knownhost_check(nh, hostname,

                                            fingerprint, len,
                                            LIBSSH2_KNOWNHOST_TYPE_PLAIN|
                                            LIBSSH2_KNOWNHOST_KEYENC_RAW,
                                            &host);
#endif
        fprintf(stderr, "Host check: %d, key: %s\n", check,
                (check <= LIBSSH2_KNOWNHOST_CHECK_MISMATCH)?
                host->key:"");

        /*****
         * At this point, we could verify that 'check' tells us the key is
         * fine or bail out.
         *****/
    }
    else {
        /* eeek, do cleanup here */
        return 3;
    }
    libssh2_knownhost_free(nh);


    if ( strlen(password) != 0 ) {
        /* We could authenticate via password */
        while ((rc = libssh2_userauth_password(session, username, password)) ==

               LIBSSH2_ERROR_EAGAIN);
        if (rc) {
            fprintf(stderr, "Authentication by password failed.\n");
            goto shutdown;
        }
    }
    else {
        /* Or by public key */
        while ((rc = libssh2_userauth_publickey_fromfile(session, username,

                                                         "/home/user/"
                                                         ".ssh/id_rsa.pub",
                                                         "/home/user/"
                                                         ".ssh/id_rsa",
                                                         password)) ==
               LIBSSH2_ERROR_EAGAIN);
        if (rc) {
            fprintf(stderr, "\tAuthentication by public key failed\n");
            goto shutdown;
        }
    }

#if 0
    libssh2_trace(session, ~0 );

#endif

    /* Exec non-blocking on the remove host */
    while( (channel = libssh2_channel_open_session(session)) == NULL &&

           libssh2_session_last_error(session,NULL,NULL,0) ==

           LIBSSH2_ERROR_EAGAIN )
    {
        waitsocket(sock, session);
    }
    if( channel == NULL )
    {
        fprintf(stderr,"Error\n");
        exit( 1 );
    }
    while( (rc = libssh2_channel_exec(channel, commandline)) ==

           LIBSSH2_ERROR_EAGAIN )
    {
        waitsocket(sock, session);
    }
    if( rc != 0 )
    {
        fprintf(stderr,"Error\n");
        exit( 1 );
    }
    for( ;; )
    {
        /* loop until we block */
        int rc;
        do
        {
            char buffer[0x4000];
            rc = libssh2_channel_read( channel, buffer, sizeof(buffer) );

            if( rc > 0 )
            {
                int i;
                bytecount += rc;
                fprintf(stderr, "We read:\n");
                for( i=0; i < rc; ++i )
                    fputc( buffer[i], stderr);
                fprintf(stderr, "\n");
            }
            else {
                if( rc != LIBSSH2_ERROR_EAGAIN )
                    /* no need to output this for the EAGAIN case */
                    fprintf(stderr, "libssh2_channel_read returned %d\n", rc);
            }
        }
        while( rc > 0 );

        /* this is due to blocking that would occur otherwise so we loop on
           this condition */
        if( rc == LIBSSH2_ERROR_EAGAIN )
        {
            waitsocket(sock, session);
        }
        else
            break;
    }
    exitcode = 127;
    while( (rc = libssh2_channel_close(channel)) == LIBSSH2_ERROR_EAGAIN )

        waitsocket(sock, session);

    if( rc == 0 )
    {
        exitcode = libssh2_channel_get_exit_status( channel );

        libssh2_channel_get_exit_signal(channel, &exitsignal,

                                        NULL, NULL, NULL, NULL, NULL);
    }

    if (exitsignal)
        fprintf(stderr, "\nGot signal: %s\n", exitsignal);
    else
        fprintf(stderr, "\nEXIT: %d bytecount: %d\n", exitcode, bytecount);

    libssh2_channel_free(channel);

    channel = NULL;

    shutdown:

    libssh2_session_disconnect(session,

                               "Normal Shutdown, Thank you for playing");
    libssh2_session_free(session);


#ifdef WIN32
    closesocket(sock);
#else
    close(sock);
#endif
    fprintf(stderr, "all done\n");

    libssh2_exit();


    return 0;
}

4、编译运行

C/C++编程:libssh2学习(linux + clion + cmake)_第7张图片

参考

使用libssh2库实现支持密码参数的ssh2客户端
使用 libssh2 拷贝文件到不同机器(类似 scp)
libssh

你可能感兴趣的:(C++)