[commons-compress] 02/02: extra guard against illegal sparse struct values

[bodewig]

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bodewig pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-compress.git

commit 1dde1a3e12934a904d84907ebb509cc73d58cc57
Author: Stefan Bodewig <bode...@apache.org>
AuthorDate: Sat May 22 17:28:50 2021 +0200

    extra guard against illegal sparse struct values
---
 .../commons/compress/archivers/tar/TarArchiveStructSparse.java      | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git 
a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveStructSparse.java
 
b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveStructSparse.java
index 116a15f..f21e7e8 100644
--- 
a/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveStructSparse.java
+++ 
b/src/main/java/org/apache/commons/compress/archivers/tar/TarArchiveStructSparse.java
@@ -37,6 +37,12 @@ public final class TarArchiveStructSparse {
     private final long numbytes;
 
     public TarArchiveStructSparse(final long offset, final long numbytes) {
+        if (offset < 0) {
+            throw new IllegalArgumentException("offset must not be negative");
+        }
+        if (numbytes < 0) {
+            throw new IllegalArgumentException("numbytes must not be 
negative");
+        }
         this.offset = offset;
         this.numbytes = numbytes;
     }