From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 25 Jun 2025 13:17:16 +0000 (+0000)
Subject: jwt: Add a convenience function to check whether a token has expires
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f83928f021d7a7d90ad58a75c850f8c47a05fa19;p=pakfire.git

jwt: Add a convenience function to check whether a token has expires

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

diff --git a/src/pakfire/jwt.c b/src/pakfire/jwt.c
index 9a694fac..4a89fba3 100644
--- a/src/pakfire/jwt.c
+++ b/src/pakfire/jwt.c
@@ -129,3 +129,21 @@ ERROR:
 
 	return r;
 }
+
+int pakfire_jwt_has_expired(const char* token) {
+	time_t expires_at = -1;
+	time_t now = -1;
+
+	// Fetch the current time
+	now = time(NULL);
+	if (now < 0)
+		return -errno;
+
+	// Fetch the expiry time of the token
+	expires_at = pakfire_jwt_expires_at(token);
+	if (expires_at < 0)
+		return expires_at;
+
+	// We consider the token as expired if there are less than 60 seconds left
+	return (expires_at - now) < 60;
+}
diff --git a/src/pakfire/jwt.h b/src/pakfire/jwt.h
index 72c70a1e..ab92af25 100644
--- a/src/pakfire/jwt.h
+++ b/src/pakfire/jwt.h
@@ -26,5 +26,6 @@
 int pakfire_jwt_payload(const char* token, struct json_object** payload);
 
 time_t pakfire_jwt_expires_at(const char* token);
+int pakfire_jwt_has_expired(const char* token);
 
 #endif /* PAKFIRE_JWT_H */