如何使用 Retargetable Decompiler cURL API？答案

【问题标题】：How to use Retargetable Decompiler cURL API?如何使用 Retargetable Decompiler cURL API？
【发布时间】：2018-03-18 17:25:51
【问题描述】：

我正在使用Windows，我正在尝试使用Retargetable Decompiler 提供的cURL API。由于 cURL 是一个 Linux 实用程序，我从 here 下载了一个 Windows 构建。假设我要执行以下反编译：这是使用可以工作并产生结果的浏览器。现在，当尝试在命令行中使用 cURL 执行相同操作时，出现错误。

输出：

>curl --form "mode=raw" --form "input=code.bin" --form "architecture=powerpc" --form "endian=big" --form "raw_entry_point=0x0" --form "raw_section_vma=0x0" -u my-secret-api-key: "https://retdec.com/service/api/decompiler/decompilations" { "id": "yVWe4pe5", "links": { "decompilation": "https://retdec.com/service/api/decompiler/decompilations/yVWe4pe5", "status": "https://retdec.com/service/api/decompiler/decompilations/yVWe4pe5/status", "outputs": "https://retdec.com/service/api/decompiler/decompilations/yVWe4pe5/outputs" }}
{
    "code": 400,
    "description": "The input file is missing.",
    "message": "Missing Input File"
}
curl: (3) [globbing] unmatched brace in column 1
curl: (6) Could not resolve host: id
curl: (6) Could not resolve host: yVWe4pe5,
curl: (6) Could not resolve host: links
curl: (3) [globbing] unmatched brace in column 1
curl: (6) Could not resolve host: decompilation
{
    "code": 405,
    "description": "The method is not allowed for the requested URL.",
    "message": "Method Not Allowed"
}
curl: (6) Could not resolve host: status
{
    "code": 404,
    "description": "The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.",
    "message": "Not Found"
}
curl: (6) Could not resolve host: outputs
{
    "code": 405,
    "description": "The method is not allowed for the requested URL.",
    "message": "Method Not Allowed"
}
curl: (3) [globbing] unmatched close brace/bracket in column 1

同样，code.bin 与命令行（脚本）位于同一目录中。我怎样才能让它工作？ ~~我实际上更喜欢Java 而不是cURL 中的解决方案，但首先在cURL 中执行它可能更容易理解，因为没有提供Java 示例或文档。~~

【问题讨论】：

input=@code.bin ?
@JoeC：这似乎无关紧要。我也添加了filename=code.bin，然后就可以了。另外，以{ 开头的部分是我错误地用作输入的输出，因此出现了所有错误。

标签： linux windows rest curl

【解决方案1】：

没关系，这很简单。

开始进程：

>curl --form "mode=raw" --form "input=@code.bin;filename=code.bin" --form "architecture=powerpc" --form "endian=big" --form "raw_entry_point=0x0" --form "raw_section_vma=0x0" --form "target_language=c" -u my-secret-api-key: "https://retdec.com/service/api/decompiler/decompilations"

收到（示例）响应：

{
    "id": "mKgBoLa3jo",
    "links": {
        "decompilation": "https://retdec.com/service/api/decompiler/decompilations/mKgBoLa3jo",
        "outputs": "https://retdec.com/service/api/decompiler/decompilations/mKgBoLa3jo/outputs",
        "status": "https://retdec.com/service/api/decompiler/decompilations/mKgBoLa3jo/status"
    }
}

获取反编译的（示例）代码：

>curl -u my-secret-api-key: https://retdec.com/service/api/decompiler/decompilations/r8OW7AaAOb/outputs/hll
//
// This file was generated by the Retargetable Decompiler
// Website: https://retdec.com
// Copyright (c) 2017 Retargetable Decompiler <info@retdec.com>
//

#include <stdint.h>

// ------------------- Function Prototypes --------------------

int32_t entry_point(int32_t a1);
int32_t unknown_20ca300(int32_t a1, int32_t a2);
int32_t unknown_212363c(int32_t a1);
int32_t unknown_27a2ad4(int32_t a1, int32_t a2);

// ------------------------ Functions -------------------------

// Address range: 0x0 - 0x1ef
int32_t entry_point(int32_t a1) {
    int32_t result = a1; // r26
    if (unknown_27a2ad4(a1, 0x27a2ad4) != 0) {
        // 0x94
        result = -1;
        unknown_212363c(0);
        unknown_20ca300(0, 0x830000);
        // branch -> 0x54
    }
    // 0x54
    return result;
}

// --------------------- Meta-Information ---------------------

// Detected compiler/packer: gcc (gcc-powerpc-elf) (4.5.1 - 4.5.2)
// Detected functions: 1
// Decompiler release: v2.2.1 (2016-09-07)
// Decompilation date: 2017-10-06 22:50:25

等等。

【讨论】：