openwrt/package/system/apk/patches/0020-pkg-truncate-apkv3-description-to-256-bytes.patch

From 417a93ceae540444fdbd3f76d1dadf0e15621fdc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi>
Date: Wed, 13 Nov 2024 09:40:21 +0200
Subject: [PATCH] pkg: truncate apkv3 description to 256 bytes

The code to read/write installeddb does not really handle long
description well. Until the database is converted to apkv3 format,
truncate the apkv3 descriptions to allow existing code to work.

APKv3 index and packages still contain the original long description
unmodified, so no package rebuild will be needed.

fixes #11038

Upstream-Status: Backport [https://gitlab.alpinelinux.org/alpine/apk-tools/-/commit/417a93ceae540444fdbd3f76d1dadf0e15621fdc]
---
 src/apk_blob.h | 5 +++++
 src/package.c  | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

--- a/src/apk_blob.h
+++ b/src/apk_blob.h
@@ -48,6 +48,11 @@ static inline apk_blob_t apk_blob_trim(a
 	return b;
 }
 
+static inline apk_blob_t apk_blob_truncate(apk_blob_t blob, int maxlen)
+{
+	return APK_BLOB_PTR_LEN(blob.ptr, min(blob.len, maxlen));
+}
+
 char *apk_blob_cstr(apk_blob_t str);
 apk_blob_t apk_blob_dup(apk_blob_t blob);
 int apk_blob_split(apk_blob_t blob, apk_blob_t split, apk_blob_t *l, apk_blob_t *r);
--- a/src/package.c
+++ b/src/package.c
@@ -577,7 +577,7 @@ void apk_pkgtmpl_from_adb(struct apk_dat
 
 	pkg->name = apk_db_get_name(db, adb_ro_blob(pkginfo, ADBI_PI_NAME));
 	pkg->version = apk_atomize_dup(&db->atoms, adb_ro_blob(pkginfo, ADBI_PI_VERSION));
-	pkg->description = apk_atomize_dup0(&db->atoms, adb_ro_blob(pkginfo, ADBI_PI_DESCRIPTION));
+	pkg->description = apk_atomize_dup0(&db->atoms, apk_blob_truncate(adb_ro_blob(pkginfo, ADBI_PI_DESCRIPTION), 512));
 	pkg->url = apk_atomize_dup(&db->atoms, adb_ro_blob(pkginfo, ADBI_PI_URL));
 	pkg->license = apk_atomize_dup(&db->atoms, adb_ro_blob(pkginfo, ADBI_PI_LICENSE));
 	pkg->arch = apk_atomize_dup(&db->atoms, adb_ro_blob(pkginfo, ADBI_PI_ARCH));