From 6a45d8c7e9f66d04cf4916264da135def5c0549d Mon Sep 17 00:00:00 2001 From: Bryce Kwon Date: Sat, 7 Nov 2026 19:31:51 -1000 Subject: Add filename* for a download name past ASCII MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The plain, snapshot and blob pages sent a name such as café.txt raw in filename, which a client may read as ISO-8859-1. RFC 6266 has such a name sent again as filename*, percent-encoded in UTF-8, for a client that knows the form, with filename first for one that does not. The extended form carries UTF-8 alone, so a name that is not valid UTF-8 keeps the plain filename by itself. --- source/html.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'source/html.c') diff --git a/source/html.c b/source/html.c index ce9344d..00eb7c6 100644 --- a/source/html.c +++ b/source/html.c @@ -471,6 +471,26 @@ void html_header_arg_in_quotes(const char *txt) html(txt); } +void html_header_ext_value(const char *txt) +{ + const char *p = txt; + + while (p && *p) { + unsigned char c = *p; + + // The attr-char set of RFC 8187, which leaves nothing that + // could end the parameter or the header line. + if (!isalnum(c) && !strchr("!#$&+-.^_`|~", c)) { + html_raw(txt, p - txt); + htmlf("%%%02X", c); + txt = p + 1; + } + p++; + } + if (p != txt) + html(txt); +} + /* * A query string goes into a header the way it arrived, already encoded by * the client, except that a byte a header line cannot carry is percent-encoded -- cgit 2.12.1