Mercurial > hg > orthanc
annotate OrthancServer/PrecompiledHeadersServer.cpp @ 2248:69b0f4e8a49b
Escape multipart type parameter value in Content-Type header
## Summary
Multipart responses do not quote/escape the value of their type
parameter (the subtype) even though it always contains at least one
special character (the slash "/"), which confuses standard-compliant
HTTP clients.
## Details
The Content-Type header in HTTP is in RFC 7231, Section 3.1.1.5:
https://tools.ietf.org/html/rfc7231#section-3.1.1.5
The section defers to the media type section (3.1.1.1) for the syntax of
the media type:
https://tools.ietf.org/html/rfc7231#section-3.1.1.1
This states that a parameter value can be quoted:
parameter = token "=" ( token / quoted-string )
A parameter value that matches the token production can be transmitted
either as a token or within a quoted-string. The quoted and unquoted
values are equivalent.
Tokens are defined in RFC 7230, Section 3.2.6 (via RFC 7231, appendix
C):
https://tools.ietf.org/html/rfc7231#appendix-C
https://tools.ietf.org/html/rfc7230#section-3.2.6
Here we observe that tokens cannot contain a slash "/" character:
token = 1*tchar
tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*"
/ "+" / "-" / "." / "^" / "_" / "`" / "|" / "~"
/ DIGIT / ALPHA
; any VCHAR, except delimiters
Delimiters are chosen from the set of US-ASCII visual characters not
allowed in a token (DQUOTE and "(),/:;<=>?@[\]{}").
However, the current implementation does not quote/escape the value of
the type parameter:
multipart/related; type=application/dicom
Instead, it should be:
multipart/related; type="application/dicom"
All of this also seems to apply to the MIME Content-Type header
definition, even though it is a little different:
https://www.iana.org/assignments/message-headers
https://tools.ietf.org/html/rfc2045#section-5.1
https://tools.ietf.org/html/rfc2387
author | Thibault Nélis <tn@osimis.io> |
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date | Mon, 16 Jan 2017 13:07:11 +0100 |
parents | a3a65de1840f |
children | 878b59270859 |
rev | line source |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017 Osimis, Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "PrecompiledHeadersServer.h" |