ZipEntryStreamUsedAfterArchiveClose

warning native on by default

Group: Probable bugs

An entry stream depends on its containing ZIP archive remaining open. Consume the stream before closing the archive.

Example

<?php
$z=new ZipArchive(); $z->open($p); $h=$z->getStream("a.txt"); $z->close(); echo stream_get_contents($h);

Reported:

• line 2: Read the entry stream before closing its archive.

Detection

• A resource local is assigned getStream on a proven ZipArchive receiver; that same receiver is closed and stream_get_contents/fread/fgets subsequently consumes the resource. Track direct locals and invalidate escape/reassignment.
• The initial supported proof is consecutive local getStream assignment, close call, and stream consumer statements.
• Resolve builtin functions, classes, constants and methods; user-defined lookalikes are excluded. Follow only bounded local proof in one lexical scope.
• Emit one finding per violating operation, not per supporting evidence statement. When the proof is inconclusive, nothing is reported.

Exceptions (no report)

• Do not report unresolved or shadowed builtin names, unknown values, or incomplete receiver/type provenance. Unknown calls, aliases escaping, and intervening writes invalidate local proof. Similar code outside the stated detection contract is not a finding.
• Both standard suppression forms suppress this native ID.

Fix

None. Choosing a repair requires intent or additional runtime information.

PHP versions

Available throughout supported PHP 5.3–8.5 where the referenced builtin/extension is available. Respect syntax/version-specific receiver contracts; unavailable APIs are not this rule’s concern.

Configure

In custos.json:

{
  "rules": {
    "ZipEntryStreamUsedAfterArchiveClose": {
      "enabled": false
    }
  }
}

Suppress

Before the statement or declaration (or the first statement of the file):

// @custos-ignore ZipEntryStreamUsedAfterArchiveClose