FTP 日志文件的语法是什么

Question

我正在尝试通过我的一些 FTP 日志来检查我遇到的问题。但是日志文件有一些 shorthand 标志，我不知道它们是什么意思，而且我找不到任何类型的文档。

FTP 日志中的一行示例是：

Tue Jan 05 17:18:22 2016 0 1.2.3.4 3581 /path/to/file/file.php a _ o r username ftp 1 * c

日期和时间很明显，1.2.3.4 是我的 IP 地址，3581 我假设是 Linux PID，username 是我的 FTP 帐户用户名。

该行的结尾，a _ o r username ftp 1 * c（username 和 ftp 除外）是我最困惑的地方。以及日期和我的 IP 地址之间的 0。

有没有关于所有这些标志代表什么的文档？

Answer 1

基于 https://svn.apache.org/repos/asf/httpd/mod_ftp/trunk/modules/ftp/ftp_log.c，您有以下 ftp-specific 个变量：

These callbacks extend mod_log_config by adding additional
% directives as follows:

%..M  The mode that was used to transfer the file.
      A single character is printed, a (ascii) or b (binary)
%..F  Any action that was taken on the file (concationated as needed)
        C - file was compressed.
        U - file was uncompressed.
        T - file was tarred.
        _ - no action taken.
%..d  Direction the file was sent.
        o - outgoing
        i - incoming
%..W  How the file was accessed.
        r - real
        a - anonymous
        g - guest
%..S    Service name, usually 'ftp'
%..Z    Authentication method
        0 - no auth
        1 - rfc931 auth
%..Y    Authenticated user id
        * - if not available

"normal" Apache 变量可以在这里找到：https://httpd.apache.org/docs/2.4/mod/mod_log_config.html#formats

默认日志格式为（基于https://httpd.apache.org/mod_ftp/ftp/ftp_tls.html）

LogFormat "%{%b %e %H:%M:%S %Y}t %T %a %B %U %M %F %d %W %u %S %Z %Y" ftp_transfer

合起来好像是：

Date (%{%b %e %H:%M:%S %Y}t)
The time taken to serve the request, in seconds. (%T)
Client IP address of the request (%a)
Size of response in bytes, excluding HTTP headers. (%B)
The URL path requested, not including any query string. (%U)
The mode that was used to transfer the file, a=ascii, b=binary (%M)
Any action that was taken on the file (%F)
Direction the file was sento=outgoing, i=incoming  (%d)
How the file was accessed (%W)
username (%u)
Service name, usually 'ftp' (%S)
Authentication method 0=none, 1=rfc9321 (%Z)
Authenticated user id *=n/a (%Y)

Answer 2

该日志行的格式似乎是 xferlog(5) 格式，传统上被许多 FTP 服务器使用。

FTP 日志文件的语法是什么

What is the syntax of the FTP log file

ftp

logging

apache2