Currently openvpn exits when reading configuration from a file that has an UTF-8 byte order mark (EF BB BF) at its start.
While it is useless to put a BOM into UTF-8 encoded files, the Unicode standard [1] permits it (on page 36): "Use of a BOM is neither required nor recommended for UTF-8, but may be encountered in contexts where UTF-8 data is converted from other encoding forms that use a BOM or where the BOM is used as a UTF-8 signature." Notepad.exe, the default text editor on Windows, always puts the BOM into UTF-8 encoded files when saving them. Others may do as well. Just ignoring the UTF-8 BOM will make config files with UTF-8 BOM readable. [1] http://www.unicode.org/versions/Unicode5.0.0/ch02.pdf Signed-off-by: Heiko Hund <heiko.h...@sophos.com> --- src/openvpn/options.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/openvpn/options.c b/src/openvpn/options.c index 8ca41a3..c52b699 100644 --- a/src/openvpn/options.c +++ b/src/openvpn/options.c @@ -3773,7 +3773,11 @@ read_config_file (struct options *options, { CLEAR (p); ++line_num; - if (parse_line (line, p, SIZE (p), file, line_num, msglevel, &options->gc)) + /* Ignore UTF-8 BOM at start of stream */ + int offset = 0; + if (line_num == 1 && strncmp (line, "\xEF\xBB\xBF", 3) == 0) + offset = 3; + if (parse_line (line + offset, p, SIZE (p), file, line_num, msglevel, &options->gc)) { bypass_doubledash (&p[0]); check_inline_file_via_fp (fp, p, &options->gc); -- 1.7.9.5
