gecko-dev/netwerk/base/public/nsINetUtil.idl

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Boris Zbarsky <bzbarsky@mit.edu> (original author)
* Benjamin Smedberg <benjamin@smedbergs.us>
* Prasad Sunkari <prasad@medhas.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsISupports.idl"
interface nsIURI;
/**
* nsINetUtil provides various network-related utility methods.
*/
[scriptable, uuid(57322c6f-f4ec-4e46-8253-b74be220de16)]
interface nsINetUtil : nsISupports
{
/**
* Parse a content-type header and return the content type and
* charset (if any).
*
* @param aTypeHeader the header string to parse
* @param [out] aCharset the charset parameter specified in the
* header, if any.
* @param [out] aHadCharset whether a charset was explicitly specified.
* @return the MIME type specified in the header, in lower-case.
*/
AUTF8String parseContentType(in AUTF8String aTypeHeader,
out AUTF8String aCharset,
out boolean aHadCharset);
/**
* Test whether the given URI's handler has the given protocol flags.
*
* @param aURI the URI in question
* @param aFlags the flags we're testing for.
*
* @return whether the protocol handler for aURI has all the flags
* in aFlags.
*/
boolean protocolHasFlags(in nsIURI aURI, in unsigned long aFlag);
/**
* Test whether the protocol handler for this URI or that for any of
* its inner URIs has the given protocol flags. This will QI aURI to
* nsINestedURI and walk the nested URI chain.
*
* @param aURI the URI in question
* @param aFlags the flags we're testing for.
*
* @return whether any of the protocol handlers involved have all the flags
* in aFlags.
*/
boolean URIChainHasFlags(in nsIURI aURI, in unsigned long aFlags);
/**
* Take aURI and produce an immutable version of it for the caller. If aURI
* is immutable this will be aURI itself; otherwise this will be a clone,
* marked immutable if possible. Passing null to this method is allowed; in
* that case it will return null.
*/
nsIURI toImmutableURI(in nsIURI aURI);
/** Escape every character with its %XX-escaped equivalent */
const unsigned long ESCAPE_ALL = 0;
/** Leave alphanumeric characters intact and %XX-escape all others */
const unsigned long ESCAPE_XALPHAS = 1;
/** Leave alphanumeric characters intact, convert spaces to '+',
%XX-escape all others */
const unsigned long ESCAPE_XPALPHAS = 2;
/** Leave alphanumeric characters and forward slashes intact,
%XX-escape all others */
const unsigned long ESCAPE_URL_PATH = 4;
/**
* escape a string with %00-style escaping
*/
ACString escapeString(in ACString aString, in unsigned long aEscapeType);
/** %XX-escape URL scheme */
const unsigned long ESCAPE_URL_SCHEME = 1;
/** %XX-escape username in the URL */
const unsigned long ESCAPE_URL_USERNAME = 1 << 1;
/** %XX-escape password in the URL */
const unsigned long ESCAPE_URL_PASSWORD = 1 << 2;
/** %XX-escape URL host */
const unsigned long ESCAPE_URL_HOST = 1 << 3;
/** %XX-escape URL directory */
const unsigned long ESCAPE_URL_DIRECTORY = 1 << 4;
/** %XX-escape file basename in the URL */
const unsigned long ESCAPE_URL_FILE_BASENAME = 1 << 5;
/** %XX-escape file extension in the URL */
const unsigned long ESCAPE_URL_FILE_EXTENSION = 1 << 6;
/** %XX-escape URL parameters */
const unsigned long ESCAPE_URL_PARAM = 1 << 7;
/** %XX-escape URL query */
const unsigned long ESCAPE_URL_QUERY = 1 << 8;
/** %XX-escape URL ref */
const unsigned long ESCAPE_URL_REF = 1 << 9;
/** %XX-escape URL path - same as escaping directory, basename and extension */
const unsigned long ESCAPE_URL_FILEPATH =
ESCAPE_URL_DIRECTORY | ESCAPE_URL_FILE_BASENAME | ESCAPE_URL_FILE_EXTENSION;
/** %XX-escape scheme, username, password, host, path, params, query and ref */
const unsigned long ESCAPE_URL_MINIMAL =
ESCAPE_URL_SCHEME | ESCAPE_URL_USERNAME | ESCAPE_URL_PASSWORD |
ESCAPE_URL_HOST | ESCAPE_URL_FILEPATH | ESCAPE_URL_PARAM |
ESCAPE_URL_QUERY | ESCAPE_URL_REF;
/** Force %XX-escaping of already escaped sequences */
const unsigned long ESCAPE_URL_FORCED = 1 << 10;
/** Skip non-ascii octets, %XX-escape all others */
const unsigned long ESCAPE_URL_ONLY_ASCII = 1 << 11;
/**
* Skip graphic octets (0x20-0x7E) when escaping
* Skips all ASCII octets (0x00-0x7F) when unescaping
*/
const unsigned long ESCAPE_URL_ONLY_NONASCII = 1 << 12;
/** Force %XX-escape of colon */
const unsigned long ESCAPE_URL_COLON = 1 << 14;
/** Skip C0 and DEL from unescaping */
const unsigned long ESCAPE_URL_SKIP_CONTROL = 1 << 15;
/**
* %XX-Escape invalid chars in a URL segment.
*
* @param aStr the URL to be escaped
* @param aFlags the URL segment type flags
*
* @return the escaped string (the string itself if escaping did not happen)
*
*/
ACString escapeURL(in ACString aStr, in unsigned long aFlags);
/**
* Expands URL escape sequences
*
* @param aStr the URL to be unescaped
* @param aFlags only ESCAPE_URL_ONLY_NONASCII and ESCAPE_URL_SKIP_CONTROL
* are recognized. If |aFlags| is 0 all escape sequences are
* unescaped
* @return unescaped string
*/
ACString unescapeString(in ACString aStr, in unsigned long aFlags);
/**
* Extract the charset parameter location and value from a content-type
* header.
*
* @param aTypeHeader the header string to parse
* @param [out] aCharset the charset parameter specified in the
* header, if any.
* @param [out] aCharsetStart index of the start of the charset parameter
* (the ';' separating it from what came before) in aTypeHeader.
* If this function returns false, this argument will still be
* set, to the index of the location where a new charset should
* be inserted.
* @param [out] aCharsetEnd index of the end of the charset parameter (the
* ';' separating it from what comes after, or the end
* of the string) in aTypeHeader. If this function returns
* false, this argument will still be set, to the index of the
* location where a new charset should be inserted.
*
* @return whether a charset parameter was found. This can be false even in
* cases when parseContentType would claim to have a charset, if the type
* that won out does not have a charset parameter specified.
*/
boolean extractCharsetFromContentType(in AUTF8String aTypeHeader,
out AUTF8String aCharset,
out long aCharsetStart,
out long aCharsetEnd);
};