netwerk/base/nsIURI.idl

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsISupports.idl"
   7
   8 /**
   9  * URIs are essentially structured names for things -- anything. This interface
  10  * provides accessors to get the most basic components of an URI.
  11  * If you need to change some parts of the URI use nsIURIMutator.
  12  * Subclasses, including nsIURL, impose greater structure on the URI.
  13  *
  14  * This interface follows Tim Berners-Lee's URI spec (RFC3986) [1], where the
  15  * basic URI components are defined as such:
  16  * <pre>
  17  *      ftp://username:password@hostname:portnumber/pathname?query#ref
  18  *      \ /   \               / \      / \        /\       / \   / \ /
  19  *       -     ---------------   ------   --------  -------   ---   -
  20  *       |            |             |        |         |       |    |
  21  *       |            |             |        |      FilePath Query Ref
  22  *       |            |             |       Port       \            /
  23  *       |            |            Host      /          ------------
  24  *       |         UserPass                 /                |
  25  *     Scheme                              /                Path
  26  *       \                                /
  27  *        --------------------------------
  28  *                       |
  29  *                    PrePath
  30  * </pre>
  31  * The definition of the URI components has been extended to allow for
  32  * internationalized domain names [2] and the more generic IRI structure [3].
  33  *
  34  * [1] https://tools.ietf.org/html/rfc3986
  35  * [2] https://tools.ietf.org/html/rfc5890
  36  * [3] https://tools.ietf.org/html/rfc3987
  37  */
  38
  39 %{C++
  40 #include "nsString.h"
  41
  42 #undef GetPort  // XXX Windows!
  43 #undef SetPort  // XXX Windows!
  44
  45 namespace mozilla {
  46 class Encoding;
  47 namespace ipc {
  48 class URIParams;
  49 }  // namespace ipc
  50 }  // namespace mozilla
  51 %}
  52
  53 [ptr] native Encoding(const mozilla::Encoding);
  54 [ref] native URIParams(mozilla::ipc::URIParams);
  55 interface nsIURIMutator;
  56
  57 /**
  58  * nsIURI - interface for an uniform resource identifier w/ i18n support.
  59  *
  60  * AUTF8String attributes may contain unescaped UTF-8 characters.
  61  * Consumers should be careful to escape the UTF-8 strings as necessary, but
  62  * should always try to "display" the UTF-8 version as provided by this
  63  * interface.
  64  *
  65  * AUTF8String attributes may also contain escaped characters.
  66  *
  67  * Unescaping URI segments is unadvised unless there is intimate
  68  * knowledge of the underlying charset or there is no plan to display (or
  69  * otherwise enforce a charset on) the resulting URI substring.
  70  *
  71  * The correct way to create an nsIURI from a string is via
  72  * nsIIOService.newURI.
  73  *
  74  * NOTE: nsBinaryInputStream::ReadObject contains a hackaround to intercept the
  75  * old (pre-gecko6) nsIURI IID and swap in the current IID instead, in order
  76  * for sessionstore to work after an upgrade.  If this IID is revved further,
  77  * we will need to add additional checks there for all intermediate IIDs, until
  78  * ContentPrincipal is fixed to serialize its URIs as nsISupports (bug 662693).
  79  */
  80 [scriptable, builtinclass, uuid(92073a54-6d78-4f30-913a-b871813208c6)]
  81 interface nsIURI : nsISupports
  82 {
  83     /************************************************************************
  84      * The URI is broken down into the following principal components:
  85      */
  86
  87     /**
  88      * Returns a string representation of the URI.
  89      *
  90      * Some characters may be escaped.
  91      */
  92     readonly attribute AUTF8String spec;
  93
  94 %{ C++
  95     // An infallible wrapper for GetSpec() that returns a failure indication
  96     // string if GetSpec() fails. It is most useful for creating
  97     // logging/warning/error messages produced for human consumption, and when
  98     // matching a URI spec against a fixed spec such as about:blank.
  99     nsCString GetSpecOrDefault()
 100     {
 101         nsCString spec;
 102         nsresult rv = GetSpec(spec);
 103         if (NS_FAILED(rv)) {
 104             spec.AssignLiteral("[nsIURI::GetSpec failed]");
 105         }
 106         return spec;
 107     }
 108 %}
 109
 110     /**
 111      * The prePath (eg. scheme://user:password@host:port) returns the string
 112      * before the path.  This is useful for authentication or managing sessions.
 113      *
 114      * Some characters may be escaped.
 115      */
 116     readonly attribute AUTF8String prePath;
 117
 118     /**
 119      * The Scheme is the protocol to which this URI refers.  The scheme is
 120      * restricted to the US-ASCII charset per RFC3986.
 121      */
 122     readonly attribute ACString scheme;
 123
 124     /**
 125      * The username:password (or username only if value doesn't contain a ':')
 126      *
 127      * Some characters may be escaped.
 128      */
 129     readonly attribute AUTF8String userPass;
 130
 131     /**
 132      * The optional username and password, assuming the preHost consists of
 133      * username:password.
 134      *
 135      * Some characters may be escaped.
 136      */
 137     readonly attribute AUTF8String username;
 138     readonly attribute AUTF8String password;
 139
 140     /**
 141      * The host:port (or simply the host, if port == -1).
 142      */
 143     readonly attribute AUTF8String hostPort;
 144
 145     /**
 146      * The host is the internet domain name to which this URI refers.  It could
 147      * be an IPv4 (or IPv6) address literal. Otherwise it is an ASCII or punycode
 148      * encoded string.
 149      */
 150     readonly attribute AUTF8String host;
 151
 152     /**
 153      * A port value of -1 corresponds to the protocol's default port (eg. -1
 154      * implies port 80 for http URIs).
 155      */
 156     readonly attribute long port;
 157
 158     /**
 159      * The path, typically including at least a leading '/' (but may also be
 160      * empty, depending on the protocol).
 161      *
 162      * Some characters may be escaped.
 163      *
 164      * This attribute contains query and ref parts for historical reasons.
 165      * Use the 'filePath' attribute if you do not want those parts included.
 166      */
 167     readonly attribute AUTF8String pathQueryRef;
 168
 169
 170     /************************************************************************
 171      * An URI supports the following methods:
 172      */
 173
 174     /**
 175      * URI equivalence test (not a strict string comparison).
 176      *
 177      * eg. http://foo.com:80/ == http://foo.com/
 178      */
 179     boolean equals(in nsIURI other);
 180
 181     /**
 182      * An optimization to do scheme checks without requiring the users of nsIURI
 183      * to GetScheme, thereby saving extra allocating and freeing. Returns true if
 184      * the schemes match (case ignored).
 185      */
 186     [infallible] boolean schemeIs(in string scheme);
 187
 188     /**
 189      * This method resolves a relative string into an absolute URI string,
 190      * using this URI as the base.
 191      *
 192      * NOTE: some implementations may have no concept of a relative URI.
 193      */
 194     AUTF8String resolve(in AUTF8String relativePath);
 195
 196
 197     /************************************************************************
 198      * Additional attributes:
 199      */
 200
 201     /**
 202      * The URI spec with an ASCII compatible encoding.  Host portion follows
 203      * the IDNA draft spec.  Other parts are URL-escaped per the rules of
 204      * RFC2396.  The result is strictly ASCII.
 205      */
 206     readonly attribute ACString asciiSpec;
 207
 208     /**
 209      * The host:port (or simply the host, if port == -1), with an ASCII compatible
 210      * encoding.  Host portion follows the IDNA draft spec.  The result is strictly
 211      * ASCII.
 212      */
 213     readonly attribute ACString asciiHostPort;
 214
 215     /**
 216      * The URI host with an ASCII compatible encoding.  Follows the IDNA
 217      * draft spec for converting internationalized domain names (UTF-8) to
 218      * ASCII for compatibility with existing internet infrasture.
 219      */
 220     readonly attribute ACString asciiHost;
 221
 222     /************************************************************************
 223      * Additional attribute & methods added for .ref support:
 224      */
 225
 226     /**
 227      * Returns the reference portion (the part after the "#") of the URI.
 228      * If there isn't one, an empty string is returned.
 229      *
 230      * Some characters may be escaped.
 231      */
 232     readonly attribute AUTF8String ref;
 233
 234     /**
 235      * URI equivalence test (not a strict string comparison), ignoring
 236      * the value of the .ref member.
 237      *
 238      * eg. http://foo.com/# == http://foo.com/
 239      *     http://foo.com/#aaa == http://foo.com/#bbb
 240      */
 241     boolean equalsExceptRef(in nsIURI other);
 242
 243     /**
 244      * returns a string for the current URI with the ref element cleared.
 245      */
 246     readonly attribute AUTF8String specIgnoringRef;
 247
 248     /**
 249      * Returns if there is a reference portion (the part after the "#") of the URI.
 250      */
 251     readonly attribute boolean hasRef;
 252
 253     /************************************************************************
 254      * Additional attributes added for .query support:
 255      */
 256
 257     /**
 258      * Returns a path including the directory and file portions of a
 259      * URL.  For example, the filePath of "http://host/foo/bar.html#baz"
 260      * is "/foo/bar.html".
 261      *
 262      * Some characters may be escaped.
 263      */
 264     readonly attribute AUTF8String filePath;
 265
 266     /**
 267      * Returns the query portion (the part after the "?") of the URL.
 268      * If there isn't one, an empty string is returned.
 269      *
 270      * Some characters may be escaped.
 271      */
 272     readonly attribute AUTF8String query;
 273
 274     /**
 275      * If the URI has a punycode encoded hostname, this will hold the UTF8
 276      * representation of that hostname (if that representation doesn't contain
 277      * blacklisted characters, and the network.IDN_show_punycode pref is false)
 278      * Otherwise, if the hostname is ASCII, it will return the same as .asciiHost
 279      */
 280     readonly attribute AUTF8String displayHost;
 281
 282     /**
 283      * The displayHost:port (or simply the displayHost, if port == -1).
 284      */
 285     readonly attribute AUTF8String displayHostPort;
 286
 287     /**
 288      * Returns the same as calling .spec, only with a UTF8 encoded hostname
 289      * (if that hostname doesn't contain blacklisted characters, and
 290      * the network.IDN_show_punycode pref is false)
 291      */
 292     readonly attribute AUTF8String displaySpec;
 293
 294     /**
 295      * Returns the same as calling .prePath, only with a UTF8 encoded hostname
 296      * (if that hostname doesn't contain blacklisted characters, and
 297      * the network.IDN_show_punycode pref is false)
 298      */
 299     readonly attribute AUTF8String displayPrePath;
 300
 301     /**
 302      * Returns an nsIURIMutator that can be used to make changes to the URI.
 303      * After performing the setter operations on the mutator, one may call
 304      * mutator.finalize() to get a new immutable URI with the desired
 305      * properties.
 306      */
 307     nsIURIMutator mutate();
 308
 309     /**
 310      * Serializes a URI object to a URIParams data structure in order for being
 311      * passed over IPC.  For deserialization, see nsIURIMutator.
 312      */
 313     [noscript, notxpcom] void serialize(in URIParams aParams);
 314
 315     %{C++
 316     // MOZ_DBG support
 317     friend std::ostream& operator<<(std::ostream& aOut, const nsIURI& aURI) {
 318       nsIURI* uri = const_cast<nsIURI*>(&aURI);
 319       return aOut << "nsIURI { " << uri->GetSpecOrDefault() << " }";
 320     }
 321     %}
 322 };