From: Jo-Philipp Wich <jo@mein.io>
Date: Fri, 10 Feb 2017 09:28:09 +0000 (+0100)
Subject: libopkg: discard empty control file fields
X-Git-Url: https://git.librecmc.org/?p=oweals%2Fopkg-lede.git;a=commitdiff_plain;h=ae179dcbb64f8797235f20521ac7dfcf3ce65ce4;hp=cd113c7ea9d8883d9cdc4c3e4ea4f87531737183

libopkg: discard empty control file fields

If the resulting string is empty after whitespace trimming, free it and
store NULL instead of an empty string buffer.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
---

diff --git a/libopkg/parse_util.c b/libopkg/parse_util.c
index fbecba6..2aef7a9 100644
--- a/libopkg/parse_util.c
+++ b/libopkg/parse_util.c
@@ -35,7 +35,12 @@ is_field(const char *type, const char *line)
 char *
 parse_simple(const char *type, const char *line)
 {
-	return trim_xstrdup(line + strlen(type) + 1);
+	char *field = trim_xstrdup(line + strlen(type) + 1);
+	if (strlen(field) == 0) {
+		free(field);
+		return NULL;
+	}
+	return field;
 }
 
 /*