From 831045ef45a9f90c1713f14a23f16b3ea54ac117 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Wed, 2 Jul 2014 12:03:36 +0200
Subject: optionsfrom: Properly handle errors when determining file size

---
 src/libstrongswan/utils/optionsfrom.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/libstrongswan/utils/optionsfrom.c b/src/libstrongswan/utils/optionsfrom.c
index 117071351..6f721c9ef 100644
--- a/src/libstrongswan/utils/optionsfrom.c
+++ b/src/libstrongswan/utils/optionsfrom.c
@@ -90,8 +90,13 @@ METHOD(options_t, from, bool,
 	}
 
 	/* determine the file size */
-	fseek(fd, 0, SEEK_END);
-	src.len = ftell(fd);
+	if (fseek(fd, 0, SEEK_END) == -1 || (src.len = ftell(fd)) == -1)
+	{
+		DBG1(DBG_LIB, "optionsfrom: unable to determine size of '%s': %s",
+			 filename, strerror(errno));
+		fclose(fd);
+		return FALSE;
+	}
 	rewind(fd);
 
 	/* allocate one byte more just in case of a missing final newline */
-- 
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