From ebdfa294c9e280ee14de27cf9d4ffb2cf82d2f36 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Thu, 27 Apr 2017 22:25:45 +0200 Subject: archive-zip: set version field for big files correctly Signal that extractors need to implement spec version 4.5 (or higher) for files with sizes of 4GB and more. Older unzippers might produce truncated results otherwise; they should rather refuse to extract. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- archive-zip.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'archive-zip.c') diff --git a/archive-zip.c b/archive-zip.c index 44ed78f163..e81c5ac15a 100644 --- a/archive-zip.c +++ b/archive-zip.c @@ -298,6 +298,7 @@ static int write_zip_entry(struct archiver_args *args, int is_binary = -1; const char *path_without_prefix = path + args->baselen; unsigned int creator_version = 0; + unsigned int version_needed = 10; size_t zip_dir_extra_size = ZIP_EXTRA_MTIME_SIZE; size_t zip64_dir_extra_payload_size = 0; @@ -382,8 +383,11 @@ static int write_zip_entry(struct archiver_args *args, if (stream && size > 0x7fffffff) need_zip64_extra = 1; + if (need_zip64_extra) + version_needed = 45; + copy_le32(header.magic, 0x04034b50); - copy_le16(header.version, 10); + copy_le16(header.version, version_needed); copy_le16(header.flags, flags); copy_le16(header.compression_method, method); copy_le16(header.mtime, zip_time); @@ -509,7 +513,7 @@ static int write_zip_entry(struct archiver_args *args, strbuf_add_le(&zip_dir, 4, 0x02014b50); /* magic */ strbuf_add_le(&zip_dir, 2, creator_version); - strbuf_add_le(&zip_dir, 2, 10); /* version */ + strbuf_add_le(&zip_dir, 2, version_needed); strbuf_add_le(&zip_dir, 2, flags); strbuf_add_le(&zip_dir, 2, method); strbuf_add_le(&zip_dir, 2, zip_time); -- cgit v1.2.3