From b59f05e781dc30d8dcae1550422c6302c766b6ad Mon Sep 17 00:00:00 2001
From: Dimitri Papadopoulos
 <3234522+DimitriPapadopoulos@users.noreply.github.com>
Date: Mon, 3 Jun 2024 22:01:42 +0200
Subject: [PATCH] =?UTF-8?q?vdprintf()=20=E2=86=92=20vsnprintf()?=
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Support older mac0S versiosn that lack vdprintf().
---
 src/userinput.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/userinput.c b/src/userinput.c
index ec19dbe2..250ece99 100644
--- a/src/userinput.c
+++ b/src/userinput.c
@@ -171,9 +171,22 @@ static int pinentry_exchange(int to, int from, char **retstr,
                              const char *format, ...)
 {
 	va_list ap;
+	char buffer[2048];
+	int size;
 
 	va_start(ap, format);
-	if (vdprintf(to, format, ap) == 0) {
+
+	size = vsnprintf(buffer, sizeof(buffer), format, ap);
+	if (size < 0) {
+		if (retstr)
+			*retstr = strdup(strerror(errno));
+		va_end(ap);
+		return -1;
+	}
+	if (size > sizeof(buffer))
+		size = sizeof(buffer);
+
+	if (write(to, buffer, size) < 0) {
 		if (retstr)
 			*retstr = strdup(strerror(errno));
 		va_end(ap);