From: Michael Tremer <michael.tremer@ipfire.org>
Date: Thu, 3 Nov 2022 20:10:18 +0000 (+0000)
Subject: scripts: Fix reading binary data in check-interpreters
X-Git-Tag: 0.9.28~150
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=be92c0b427b17b07e886990e0a3703b4e7f0f1b4;p=pakfire.git

scripts: Fix reading binary data in check-interpreters

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/scripts/check-interpreters b/src/scripts/check-interpreters
index 4565756ca..ba7e882e6 100644
--- a/src/scripts/check-interpreters
+++ b/src/scripts/check-interpreters
@@ -38,14 +38,15 @@ main() {
 
 	# Find all executable files
 	for file in $(find "${buildroot}" -type f -perm /111 | sort); do
-		local first_line="$(grep -q "^#!" "${file}" && head -n1 "${file}")"
+		local shebang="$(head -c2 "${file}")"
 
 		# Skip files that are not scripts
-		if [ "${first_line:0:2}" != "#!" ]; then
+		if [ "${shebang:0:2}" != "#!" ]; then
 			continue
 		fi
 
-		local interpreter="${first_line:2}"
+		local interpreter="$(head -n1 "${file}")"
+		interpreter="${interpreter:2}"
 
 		case "${interpreter}" in
 			# Interpreters in /usr/local are illegal