如何将 golang 变量(可以包含任何字符)传递给 linux 中的 echo 二进制文件?

How to pass a golang variables( can contain any character) to echo binary in linux?

所以我的代码看起来像这样,我有一个函数定义如下:

func shellOut(command string) (string, string, error) {
    var stdout bytes.Buffer
    var stderr bytes.Buffer
    cmd := exec.Command("bash", "-c", command)
    cmd.Stdout = &stdout
    cmd.Stderr = &stderr
    err := cmd.Run()
    return stdout.String(), stderr.String(), err
}

一段时间后我正在做这个。

  t := "yoooooooooooo\"oo)(';#oooooooooooo"
    out, stderr, err := shellOut("echo \"" + t + "\"  | ./doOperation.sh")
    if err != nil {
        log.Printf("final error: %v\nstderr: %s", err, stderr)
    }   
    fmt.Println(out)

但我收到如下所示的错误:

2021/10/14 22:54:18 final error: exit status 1
stderr: bash: -c: line 838: syntax error near unexpected token `('
bash: -c: line 838: `                return "Symbol(" + String(void 0 === t ? "" : t) + ")_" + (++n + r).toString(36)'

当我给变量 t 一个像“yooooo”这样的值时,它会很好地执行,那么我如何将一个带有任何奇怪字符的变量传递给 echo?有没有办法在通过之前转义所有不良字符?

出于纯粹的学术目的,我发布了这个功能,因为前阵子我不得不做类似的事情:

var bashReplacer = strings.NewReplacer(
    `)`, `\)`, // using back-ticks to keep our sanity
    `(`, `\(`,
    `'`, `\'`,
    `"`, `\"`,
    `$`, `$`, // include if you don't want variable substitutions
    "`", "\`", // can't use back-ticks to include a back-tick, so back to double-quotes
)

func bashEscape(s string) string { return bashReplacer.Replace(s) }

https://play.golang.org/p/uNfI_2MyjcI

然而,正如我在评论中提到的,您可以通过直接 运行 目标脚本避免 shell 转义的所有痛苦,并且不加改变地输入 UTF-8 字符串像这样:

func execWithStdin(command, stdinText string) (string, string, error) {
    var (
        stdout bytes.Buffer
        stderr bytes.Buffer
    )

    cmd := exec.Command(command)
    cmd.Stdin = strings.NewReader(stdinText) // pass in our data via Stdin
    cmd.Stdout = &stdout
    cmd.Stderr = &stderr
    err := cmd.Run()
    return stdout.String(), stderr.String(), err
}

使用:

t := `yoooooooooooo"oo)(';#oooooooooooo`
t += "`" // add a back-tick to make things interesting

// no shell escaping necessary:

out, stderr, err := execWithStdin("./doOperation.sh", t)