rspec/rules/S5445/java/rule.adoc

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2021-01-20 04:06:26 +00:00
Using ``File.createTempFile`` as the first step in creating a temporary directory causes a race condition and is inherently unreliable and insecure. Instead, ``Files.createTempDirectory`` (Java 7+) should be used.
This rule raises an issue when the following steps are taken in immediate sequence:
* call to ``File.createTempFile``
* delete resulting file
* call ``mkdir`` on the File object
*Note* that this rule is automatically disabled when the project's ``sonar.java.source`` is lower than ``7``.
== Noncompliant Code Example
----
File tempDir;
tempDir = File.createTempFile("", ".");
tempDir.delete();
tempDir.mkdir(); // Noncompliant
----
== Compliant Solution
----
Path tempPath = Files.createTempDirectory("");
File tempDir = tempPath.toFile();
----
include::../see.adoc[]