ProcessBuilder并运行包含空格的OpenSSL命令 [英] ProcessBuilder and running OpenSSL command which contains spaces

问题描述

在Ubuntu environemnt中使用我的jar执行openSSL命令时遇到问题。
我已经得出结论，这是因为文件路径中的空间正在作为命令中的参数传递，例如SHA 256在下面的命令中。
我已经使用了两个进程和 ProcessBuilder 类来执行相同的操作：

I am facing a problem while executing openSSL command using my jar in Ubuntu environemnt. I have concluded that this is happening because of the space in the path of the file which is being passed as a parameter in the command e.g. SHA 256 in below command. I have used both process and ProcessBuilder classes for executing the same:

首先 ：

First:

String certFilePath = "/home/mplusuer/Desktop/Nishant/210515/TestData/TestData/SHA 256/nishant.cer"
String []cmdGetAlgorithm = new String[3];

cmdGetAlgorithm[0] = "openssl x509 -in";
cmdGetAlgorithm[1] = certFilePath;
cmdGetAlgorithm[2] = "-noout -text -certopt no_subject,no_header,no_version,no_serial,no_validity,no_subject,no_issuer,no_pubkey,no_sigdump,no_aux,no_extensions";

ProcessBuilder pb = new ProcessBuilder(cmdGetAlgorithm[0], cmdGetAlgorithm[1],cmdGetAlgorithm[2]);
// setup other options ...

Process processGetAlgorithm = pb.start();
processGetAlgorithm.waitFor();

第二 ：

Second:

Runtime runtime = Runtime.getRuntime();
String cmdGetAlgorithm = "openssl x509 -in "
        + certFilePAth
        + " -noout -text -certopt no_subject,no_header,no_version,no_serial,no_validity,no_subject,no_issuer,no_pubkey,no_sigdump,no_aux,no_extensions ";

Process processGetAlgorithm = runtime.exec(cmdGetAlgorithm);

最终命令如下所示，如果在命令提示符下单独执行，则可以正常工作但在执行时使用失败java code：

the final command is as below, which works fine if executed separately on command prompt but fails when executed using java code:

openssl x509 -in /home/mplusuer/Desktop/Nishant/210515/TestData/TestData/SHA 256/suketu.cer  \
  -noout -text -certopt no_subject,no_header,no_version,no_serial,no_validity,no_subject, \
   no_issuer,no_pubkey,no_sigdump,no_aux,no_extensions

我也使用以下方法来解决这个问题，但没有按预期工作：

I have used the below methods also for resolving this issue, but nothing worked as per expectation:

String quoted = "\"" + certFilePath + "\"";
String escaped = certFilePath.replace(" ", "\\ ");

请查看并帮助我解决问题。

Please see to it and help me in resolving the same.

推荐答案

cmdGetAlgorithm[0] = "openssl x509 -in";
...

正如@immibis在注释， arg [0] 是程序名称。所以向量应该类似于：

As @immibis stated in the comments, arg[0] is the program name. So the vector should look something like:

cmdArg[0] = "/usr/local/ssl/bin/openssl";
cmdArg[1] = "x509";
cmdArg[2] = "-in";
cmdArg[3] = certFilePAth;
cmdArg[4] = "-noout"
cmdArg[5] = "-text";
cmdArg[6] = "-certopt";
cmdArg[7] = "no_subject,no_header,no_version,no_serial,no_validity," +
            "no_issuer,no_pubkey,no_sigdump,no_aux,no_extensions ";

您应该始终指定可执行文件的完整文件名，以确保您运行的是预期的可执行文件，而不是对手种下的东西。

You should always specify the complete filename of the executable to ensure you are running the intended executable, and not something planted by an adversary.

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