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Fix URL normalization when replacing /./ with /

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Previously, a regular expression of /./ was used to replace /./ with
/.  The '.'' in the expression matches any single character so the
replacement was more broadly applicable than it should have been. For
example, /a/ would be replaced with /.

This commit uses Pattern.LITERAL to compile the regular expression
from the CURRENT_DIR (/./) contant. This allows the constant to be
used to check for occurances of /./ in the string before attempting
replacement, while also ensuring that the '.' is treated literally.

Closes gh-17341
This commit is contained in:
Andy Wilkinson
2019-07-01 15:06:18 +01:00
parent 3bbe723718
commit 4083c721f2
2 changed files with 3 additions and 3 deletions
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2
spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/Handler.java
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@@ -51,7 +51,7 @@ public class Handler extends URLStreamHandler {
private static final String CURRENT_DIR = "/./";
private static final Pattern CURRENT_DIR_PATTERN = Pattern.compile(CURRENT_DIR);
private static final Pattern CURRENT_DIR_PATTERN = Pattern.compile(CURRENT_DIR, Pattern.LITERAL);
private static final String PARENT_DIR = "/../";