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Specify HTML numeric character reference fallback encoding for filenames #3276

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Specify HTML numeric character reference fallback encoding for filenames #3276

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d1eee60
Specify HTML numeric character reference fallback encoding for multip…
Dec 6, 2017
bf7ad5c
Add normative quoting of syntactically-significant characters
Dec 7, 2017
e9af73f
Add NUL to the should-be-escaped set for multipart parameters
Dec 8, 2017
87bc654
Escape all the ASCII controls and double \ to \\ to avoid breaking mu…
Dec 8, 2017
2400d5d
typofix
Dec 8, 2017
d973d73
explain why ESC is not quoted (thanks, @bzbarsky !)
Dec 9, 2017
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22 changes: 17 additions & 5 deletions source
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Expand Up @@ -56291,7 +56291,8 @@ fur
<li><p>For each character in the entry's name and value that cannot be expressed using the
selected character encoding, replace the character by a string consisting of a U+0026 AMPERSAND
character (&amp;), a U+0023 NUMBER SIGN character (#), one or more <span>ASCII digits</span>
representing the code point of the character in base ten, and finally a U+003B (;).</p></li>
representing the code point of the character in base ten, and finally a U+003B SEMICOLON
character (;).</p></li>
<!-- we should say it should be the shortest possible string, no leading zeros. this whole step
is asinine, though, so... -->

Expand All @@ -56318,10 +56319,21 @@ fur
values must be encoded using the character encoding selected above.</p>

<p>File names included in the generated <code>multipart/form-data</code> resource (as part of
file fields) must use the character encoding selected above, though the precise name may be
approximated if necessary (e.g. newlines could be removed from file names, quotes could be
changed to "%22", and characters not expressible in the selected character encoding could be
replaced by other characters).
file fields) must use the character encoding selected above. For each character in the entry's
file name that cannot be expressed using the selected character encoding, replace the character
by a string consisting of a U+0026 AMPERSAND character (&amp;), a U+0023 NUMBER SIGN character
(#), one or more <span>ASCII digits</span> representing the code point of the character in base
ten, and finally a U+003B (;).</p>

<p>Field names and file names included in the generated <code>multipart/form-data</code>
resource must undergo multipart parameter-value character replacement for syntactically
significant characters: for each character in the parameter value that is U+0022 QUOTATION MARK
("), U+007F &lt;control&gt; (DEL) or any other <span data-x="control">control</span> in the
range U+0000-U+001F except U+001B &lt;control&gt; (ESC), replace the character by a string
consisting of a U+0025 PERCENT SIGN character (%) and two <span>ASCII hex digits</span>
representing the code point of the character in base sixteen, and replace each U+005C REVERSE
SOLIDUS character (\) with two consecutive U+005C REVERSE SOLIDUS characters (\\). U+001B
&lt;control&gt; (ESC) is preserved (passed through unquoted) for Web-compatible ISO-2022-JP.</p>

<p>The boundary used by the user agent in generating the return value of this algorithm is the
<dfn data-export=""><code>multipart/form-data</code> boundary string</dfn>. (This value is used
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