From bdcdb9f1a042c7e542d23ae5790ae5a1925904c8 Mon Sep 17 00:00:00 2001
From: Juan RP <xtraeme@gmail.com>
Date: Fri, 1 Feb 2013 13:40:27 +0100
Subject: [PATCH] xbps_fetch_file: don't check for file truncation if server
 answers with invalid info.

---
 NEWS           | 3 +++
 lib/download.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS
index 8e5fbc46..0c2a4421 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,8 @@
 xbps-0.21 (???):
 
+ * Fix regression in xbps_fetch_file() when fetching files from HTTP
+   servers that don't provide us enough details (file length, mtime, etc).
+
  * Fix regression introduced in b9136c61c95698a5dafbc69ee9cd873110c68e45,
    breaking package conflicts detection.
 
diff --git a/lib/download.c b/lib/download.c
index d73de873..090591d7 100644
--- a/lib/download.c
+++ b/lib/download.c
@@ -249,7 +249,7 @@ xbps_fetch_file(struct xbps_handle *xhp, const char *uri, const char *flags)
 		errno = EIO;
 		rv = -1;
 		goto out;
-	} else if ((bytes_dload + url->offset) != url_st.size) {
+	} else if (url_st.size > 0 && ((bytes_dload + url->offset) != url_st.size)) {
 		xbps_dbg_printf(xhp, "file %s is truncated\n", filename);
 		errno = EIO;
 		rv = -1;