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Fix StoreAsset update for existing assets in redbean

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This commit is contained in:
Paul Kulchenko 2021-11-15 17:19:23 -08:00
parent d6a039821f
commit 1526116192
1 changed files with 7 additions and 3 deletions
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10
tool/net/redbean.c
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@ -3303,11 +3303,15 @@ static int LuaStoreAsset(lua_State *L) {
oldcdirsize = GetZipCdirSize(zcdir);
oldcdiroffset = GetZipCdirOffset(zcdir);
if (a) {
// to remove an existing asset,
// first copy the central directory part before its record
v[4].iov_base = zbase + oldcdiroffset;
v[4].iov_len = a->cf - oldcdiroffset;
v[5].iov_base = zbase + oldcdiroffset + ZIP_CFILE_HDRSIZE(zbase + a->cf);
v[5].iov_len =
oldcdirsize - v[4].iov_len - ZIP_CFILE_HDRSIZE(zbase + a->cf);
// and then the rest of the central directory
v[5].iov_base = zbase + oldcdiroffset +
(v[4].iov_len + ZIP_CFILE_HDRSIZE(zbase + a->cf));
v[5].iov_len = oldcdirsize -
(v[4].iov_len + ZIP_CFILE_HDRSIZE(zbase + a->cf));
} else {
v[4].iov_base = zbase + oldcdiroffset;
v[4].iov_len = oldcdirsize;