From e2b812c8045b574fa164d850ef50f426ae9e1df5 Mon Sep 17 00:00:00 2001
From: Mike Yuan <me@yhndnzj.com>
Date: Thu, 9 May 2024 22:01:07 +0800
Subject: [PATCH] string-util: introduce string_is_safe_ascii helper

---
 src/basic/string-util.h                 | 4 ++++
 src/libsystemd-network/sd-dhcp-server.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/basic/string-util.h b/src/basic/string-util.h
index a032ee8d6a7..b5da8bea059 100644
--- a/src/basic/string-util.h
+++ b/src/basic/string-util.h
@@ -8,6 +8,7 @@
 #include "alloc-util.h"
 #include "macro.h"
 #include "string-util-fundamental.h"
+#include "utf8.h"
 
 /* What is interpreted as whitespace? */
 #define WHITESPACE          " \t\n\r"
@@ -234,6 +235,9 @@ static inline int strdup_to(char **ret, const char *src) {
 }
 
 bool string_is_safe(const char *p) _pure_;
+static inline bool string_is_safe_ascii(const char *p) {
+        return ascii_is_valid(p) && string_is_safe(p);
+}
 
 DISABLE_WARNING_STRINGOP_TRUNCATION;
 static inline void strncpy_exact(char *buf, const char *src, size_t buf_len) {
diff --git a/src/libsystemd-network/sd-dhcp-server.c b/src/libsystemd-network/sd-dhcp-server.c
index 4967f066dce..25b4cafaa59 100644
--- a/src/libsystemd-network/sd-dhcp-server.c
+++ b/src/libsystemd-network/sd-dhcp-server.c
@@ -271,7 +271,7 @@ int sd_dhcp_server_set_boot_server_name(sd_dhcp_server *server, const char *name
 int sd_dhcp_server_set_boot_filename(sd_dhcp_server *server, const char *filename) {
         assert_return(server, -EINVAL);
 
-        if (filename && (!string_is_safe(filename) || !ascii_is_valid(filename)))
+        if (filename && !string_is_safe_ascii(filename))
                 return -EINVAL;
 
         return free_and_strdup(&server->boot_filename, filename);