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(Unicode C++) SFTP Get Size of File on Server

See more SFTP Examples

Demonstrates how to get the size of an existing file on the server.

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#include <CkSFtpW.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkSFtpW sftp;

    // Set some timeouts, in milliseconds:
    sftp.put_ConnectTimeoutMs(5000);
    sftp.put_IdleTimeoutMs(10000);

    // Connect to the SSH server.  
    // The standard SSH port = 22
    // The hostname may be a hostname or IP address.
    const wchar_t *hostname = L"sftp.example.com";
    int port = 22;
    bool success = sftp.Connect(hostname,port);
    if (success != true) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    // Authenticate with the SSH server.  Chilkat SFTP supports
    // both password-based authenication as well as public-key
    // authentication.  This example uses password authenication.
    success = sftp.AuthenticatePw(L"myLogin",L"myPassword");
    if (success != true) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    // After authenticating, the SFTP subsystem must be initialized:
    success = sftp.InitializeSftp();
    if (success != true) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    // Assuming we know the file size won't be too large, we get the size as a 32-bit integer.
    // For SFTP, the remote file path is always either a path relative to the HOME directory of the user account, or an absolute path on the server.
    bool bFollowLinks = true;
    bool bIsHandle = false;
    int fileSize = sftp.GetFileSize32(L"someDir/someFile.dat",bFollowLinks,bIsHandle);
    if (fileSize < 0) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    wprintf(L"file size = %d\n",fileSize);

    // If the file size might be too large for a 32-bit signed integer, then get the size as a decimal string.
    // You can convert the string to a 64-bit integer in your programming language.
    const wchar_t *fileSizeStr = sftp.getFileSizeStr(L"someDir/someFile.dat",bFollowLinks,bIsHandle);
    if (sftp.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    wprintf(L"file size = %s\n",fileSizeStr);

    // You can alternatively get the size with an open file handle.
    const wchar_t *handle = sftp.openFile(L"someDir/someFile.dat",L"readOnly",L"openExisting");
    if (sftp.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    // Get the size using the handle.
    bIsHandle = true;
    fileSize = sftp.GetFileSize32(L"someDir/someFile.dat",bFollowLinks,bIsHandle);
    if (fileSize < 0) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }

    wprintf(L"file size = %d\n",fileSize);

    // -----------------------------------------------------------------------------
    // Don't forget to close the file handle.
    // Otherwise open handles will accumulate on the server until eventually a limit
    // is reached and the server will fail on a call to OpenFile.
    // -----------------------------------------------------------------------------

    // Close the file.
    success = sftp.CloseHandle(handle);
    if (success != true) {
        wprintf(L"%s\n",sftp.lastErrorText());
        return;
    }
    }

 

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