Question

我有一个小脚本，可以通过ssh2库为php复制文件。我在Windows上尝试了不同版本的php，它按预期工作，但是当我在Linux上传代码时，它无法复制文件。

注意php代码是一样的，php版本是一样的。我没有收到任何错误消息。我在预设文件权限时使用此命令。在此之前我尝试使用fopen，fwrite trough sftp，但是在复制之后我没能将文件chmod。

以下是代码（如果有关系）：

public function connect() {

    if (empty($this->ftpProps['ftpServer'])) {
        $result['errorMsg'] = 'No FTP Server Provided';
        $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
        return $result;
    }

    $this->ftpProps['ftpServer'] = str_replace("sftp://", "", $this->ftpProps['ftpServer']);
    $this->callFunc($this->callbackFunction, 'Connecting to: <b>'.$this->ftpProps['ftpServer'].'</b>...'."\n");

    if (!function_exists('ssh2_connect')) {
        $result['errorMsg'] = 'Missing Secure Shell2 Library';
        $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
        return $result;
    }

    $this->connection = ssh2_connect($this->ftpProps['ftpServer'], 22);
    if (empty($this->connection)) {
        $result['errorMsg'] = "Couldn't connect to ".$this->ftpProps['ftpServer'];
        $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
        return $result;
    }
    $this->callFunc($this->callbackFunction, '<span class="successfull">Done</span><br />');

    // login
    if (empty($this->ftpProps['ftpUser'])) {
        $result['errorMsg'] = 'No FTP UserName Provided';
        $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
        return $result;
    }

    $this->callFunc($this->callbackFunction, 'Logging in as <b>'.$this->ftpProps['ftpUser'].'</b>...'."\n");

    $this->authResult = ssh2_auth_password($this->connection, $this->ftpProps['ftpUser'], $this->ftpProps['ftpPass']);

    if (!$this->authResult) {
        $result['errorMsg'] = 'Failed to connect to '.$this->ftpProps['ftpServer'].'. Wrong credentials.';
        $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
        return $result;
    }

    $this->callFunc($this->callbackFunction, '<span class="successfull">Done</span><br />');
    $this->callFunc($this->callbackFunction, 'Initializing SFTP subsystem of <b>'.$this->ftpProps['ftpServer'].'</b>...'."\n");

    $sftp = ssh2_sftp($this->connection);
    if (!$sftp) {
        $result['errorMsg'] = 'Failed to initialize SFTP subsystem of '.$this->ftpProps['ftpServer'];
        $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
        return $result;
    }

    $this->callFunc($this->callbackFunction, '<span class="successfull">Done</span><br />');
    $result['message'] = 'Success';
    $result['isTestSuccessful'] = true;
    return $result;
}

//@Override
public function upload() {
    $timer = lloader()->getTimer();

    $uploadStartedOn = time();
    $connectResult = $this->connect();
    if (!empty($connectResult['errMsg'])) { return $connectResult; }

    $targetFileNames = $this->ftpProps['targetFileNames'];
    $sourceFileNames = $this->ftpProps['sourceFileNames'];

    foreach ($sourceFileNames as $nameIndex => $sourceFileName) {
        $targetFileName = $targetFileNames[$nameIndex];
        echoFlush('Uploading <b>'.$targetFileName.'</b>...');

        // use ssh2_scp_send instead fopen because of opportunity to set file mode. amazon disables chmod command
        $writeResult = ssh2_scp_send($this->connection, $sourceFileName, $this->ftpProps['destPath'].$targetFileName, 0755);
        if (!$writeResult) {
            $result['errorMsg'] = 'Failed to upload '.$targetFileName;
            $this->callFunc($this->callbackFunction, '<span class="error">'.$result['errorMsg'].'</span><br>'."\n");
            return $result;
        }
        $this->callFunc($this->callbackFunction, '<span class="successfull">Done</span><br />');
    }

    $this->callFunc($this->callbackFunction, '<span class="successfull">Done</span><br>'."\n");
    $this->callFunc($this->callbackFunction, 'The Upload Took '.$timer->getFormattedElapsedTime(time() - $uploadStartedOn).'<br>'."\n");

    $result['message'] = 'Success';
    $result['isSubmitSuccessful'] = true;
    return $result;
}

这是Linux发行版：

cat /etc/*-release
CentOS release 5.9 (Final)

php -i命令的一些返回行：

Registered PHP Streams => https, ftps, compress.zlib, compress.bzip2, php, file, data,
               http, ftp, ssh2.shell, ssh2.exec, ssh2.tunnel, ssh2.scp, ssh2.sftp, zip
Registered Stream Socket Transports => tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
...
ssh2
libssh2 version => 1.2.9
banner => SSH-2.0-libssh2_1.2.9
...
Stream Wrapper support => compress.zlib://
zlib.output_compression => Off => Off
zlib.output_compression_level => -1 => -1

修改

我只是尝试使用fopen / fwrite / fclose代替ssh_scp_send并得到相同的结果。我完全糊涂了。以下是文件上传的代码：

$targetHandler = fopen("ssh2.sftp://".$this->sftp."/".$this->ftpProps['ftpDestPath'].$targetFileName, 'w');
        if (empty($targetHandler)) {
            $result['errorMsg'] = 'Failed to open '.$targetFileName;
            return $result;
        }
        $sourceHandler = @fopen($sourceFileName, "r");
        while (!feof($sourceHandler)) {
            $readBlock = fread($sourceHandler, 16384);
            $resultWrite = fwrite($targetHandler, $readBlock);
            if ($resultWrite === false) {
                $result['errorMsg'] = 'Failed to upload '.$targetFileName;
                fclose($targetHandler);
                fclose($sourceHandler);
                return $result;
            }
        }

        $chmodResult = ssh2_sftp_chmod($this->sftp, $this->ftpProps['destPath'].$targetFileName, 0755);
        if (empty($chmodResult)) {
            $result['errorMsg'] = 'Failed to chmod '.$targetFileName;
            return $result;
        }

感谢。

编辑2： 看来这是亚马逊sftp的具体问题。我在其他服务器上试过它，它可以在两个平台上运行。在我看来，第一件事是通过ip进行某种保护。你怎么看？亚马逊sftp服务器位于：productads.amazon-digital-ftp.com

Answer 1

看起来SSH2库有两个先决条件，你确认Linux盒符合它们吗？

http://www.php.net/manual/en/ssh2.requirements.php

Answer 2

我找到了脚本这种行为的原因。它是ssh2库版本。在我的localhost和一个Linux服务器上，它是SSH-2.0-libssh2_1.4.3。在有问题的机器上，库的版本是SSH-2.0-libssh2_1.2.9。所以这似乎是一个库错误。

我将这篇文章留给那些使用此库并且不想更改其代码的人。

感谢您的时间。

ssh2_scp_send仅适用于Windows，但不能在linux上复制到amazon.com

2 个答案: