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      1 /*
      2  * Copyright (C) 2008, 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "Location.h"
     31 
     32 #include "DOMWindow.h"
     33 #include "ExceptionCode.h"
     34 #include "Frame.h"
     35 #include "FrameLoader.h"
     36 #include "KURL.h"
     37 
     38 namespace WebCore {
     39 
     40 Location::Location(Frame* frame)
     41     : m_frame(frame)
     42 {
     43 }
     44 
     45 void Location::disconnectFrame()
     46 {
     47     m_frame = 0;
     48 }
     49 
     50 inline const KURL& Location::url() const
     51 {
     52     ASSERT(m_frame);
     53 
     54     const KURL& url = m_frame->document()->url();
     55     if (!url.isValid())
     56         return blankURL(); // Use "about:blank" while the page is still loading (before we have a frame).
     57 
     58     return url;
     59 }
     60 
     61 String Location::href() const
     62 {
     63     if (!m_frame)
     64         return String();
     65 
     66     const KURL& url = this->url();
     67     return url.hasPath() ? url.prettyURL() : url.prettyURL() + "/";
     68 }
     69 
     70 String Location::protocol() const
     71 {
     72     if (!m_frame)
     73         return String();
     74 
     75     return url().protocol() + ":";
     76 }
     77 
     78 String Location::host() const
     79 {
     80     if (!m_frame)
     81         return String();
     82 
     83     // Note: this is the IE spec. The NS spec swaps the two, it says
     84     // "The hostname property is the concatenation of the host and port properties, separated by a colon."
     85     const KURL& url = this->url();
     86     return url.port() ? url.host() + ":" + String::number(url.port()) : url.host();
     87 }
     88 
     89 String Location::hostname() const
     90 {
     91     if (!m_frame)
     92         return String();
     93 
     94     return url().host();
     95 }
     96 
     97 String Location::port() const
     98 {
     99     if (!m_frame)
    100         return String();
    101 
    102     const KURL& url = this->url();
    103     return url.port() ? String::number(url.port()) : "";
    104 }
    105 
    106 String Location::pathname() const
    107 {
    108     if (!m_frame)
    109         return String();
    110 
    111     const KURL& url = this->url();
    112     return url.path().isEmpty() ? "/" : url.path();
    113 }
    114 
    115 String Location::search() const
    116 {
    117     if (!m_frame)
    118         return String();
    119 
    120     const KURL& url = this->url();
    121     return url.query().isEmpty() ? "" : "?" + url.query();
    122 }
    123 
    124 String Location::origin() const
    125 {
    126     if (!m_frame)
    127         return String();
    128     return SecurityOrigin::create(url())->toString();
    129 }
    130 
    131 String Location::hash() const
    132 {
    133     if (!m_frame)
    134         return String();
    135 
    136     const String& fragmentIdentifier = url().fragmentIdentifier();
    137     return fragmentIdentifier.isEmpty() ? "" : "#" + fragmentIdentifier;
    138 }
    139 
    140 String Location::getParameter(const String& name) const
    141 {
    142     if (!m_frame)
    143         return String();
    144 
    145     ParsedURLParameters parameters;
    146     url().copyParsedQueryTo(parameters);
    147     return parameters.get(name);
    148 }
    149 
    150 String Location::toString() const
    151 {
    152     if (!m_frame)
    153         return String();
    154 
    155     const KURL& url = this->url();
    156     return url.hasPath() ? url.prettyURL() : url.prettyURL() + "/";
    157 }
    158 
    159 void Location::setHref(const String& urlString, DOMWindow* activeWindow, DOMWindow* firstWindow)
    160 {
    161     if (!m_frame)
    162         return;
    163     m_frame->domWindow()->setLocation(urlString, activeWindow, firstWindow);
    164 }
    165 
    166 void Location::setProtocol(const String& protocol, DOMWindow* activeWindow, DOMWindow* firstWindow, ExceptionCode& ec)
    167 {
    168     if (!m_frame)
    169         return;
    170     KURL url = m_frame->document()->url();
    171     if (!url.setProtocol(protocol)) {
    172         ec = SYNTAX_ERR;
    173         return;
    174     }
    175     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    176 }
    177 
    178 void Location::setHost(const String& host, DOMWindow* activeWindow, DOMWindow* firstWindow)
    179 {
    180     if (!m_frame)
    181         return;
    182     KURL url = m_frame->document()->url();
    183     url.setHostAndPort(host);
    184     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    185 }
    186 
    187 void Location::setHostname(const String& hostname, DOMWindow* activeWindow, DOMWindow* firstWindow)
    188 {
    189     if (!m_frame)
    190         return;
    191     KURL url = m_frame->document()->url();
    192     url.setHost(hostname);
    193     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    194 }
    195 
    196 void Location::setPort(const String& portString, DOMWindow* activeWindow, DOMWindow* firstWindow)
    197 {
    198     if (!m_frame)
    199         return;
    200     KURL url = m_frame->document()->url();
    201     int port = portString.toInt();
    202     if (port < 0 || port > 0xFFFF)
    203         url.removePort();
    204     else
    205         url.setPort(port);
    206     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    207 }
    208 
    209 void Location::setPathname(const String& pathname, DOMWindow* activeWindow, DOMWindow* firstWindow)
    210 {
    211     if (!m_frame)
    212         return;
    213     KURL url = m_frame->document()->url();
    214     url.setPath(pathname);
    215     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    216 }
    217 
    218 void Location::setSearch(const String& search, DOMWindow* activeWindow, DOMWindow* firstWindow)
    219 {
    220     if (!m_frame)
    221         return;
    222     KURL url = m_frame->document()->url();
    223     url.setQuery(search);
    224     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    225 }
    226 
    227 void Location::setHash(const String& hash, DOMWindow* activeWindow, DOMWindow* firstWindow)
    228 {
    229     if (!m_frame)
    230         return;
    231     KURL url = m_frame->document()->url();
    232     String oldFragmentIdentifier = url.fragmentIdentifier();
    233     String newFragmentIdentifier = hash;
    234     if (hash[0] == '#')
    235         newFragmentIdentifier = hash.substring(1);
    236     url.setFragmentIdentifier(newFragmentIdentifier);
    237     // Note that by parsing the URL and *then* comparing fragments, we are
    238     // comparing fragments post-canonicalization, and so this handles the
    239     // cases where fragment identifiers are ignored or invalid.
    240     if (equalIgnoringNullity(oldFragmentIdentifier, url.fragmentIdentifier()))
    241         return;
    242     m_frame->domWindow()->setLocation(url.string(), activeWindow, firstWindow);
    243 }
    244 
    245 void Location::assign(const String& urlString, DOMWindow* activeWindow, DOMWindow* firstWindow)
    246 {
    247     if (!m_frame)
    248         return;
    249     m_frame->domWindow()->setLocation(urlString, activeWindow, firstWindow);
    250 }
    251 
    252 void Location::replace(const String& urlString, DOMWindow* activeWindow, DOMWindow* firstWindow)
    253 {
    254     if (!m_frame)
    255         return;
    256     m_frame->domWindow()->setLocation(urlString, activeWindow, firstWindow, LockHistoryAndBackForwardList);
    257 }
    258 
    259 void Location::reload(DOMWindow* activeWindow)
    260 {
    261     if (!m_frame)
    262         return;
    263     // FIXME: It's not clear this cross-origin security check is valuable.
    264     // We allow one page to change the location of another. Why block attempts to reload?
    265     // Other location operations simply block use of JavaScript URLs cross origin.
    266     DOMWindow* targetWindow = m_frame->domWindow();
    267     if (!activeWindow->securityOrigin()->canAccess(targetWindow->securityOrigin())) {
    268         targetWindow->printErrorMessage(targetWindow->crossDomainAccessErrorMessage(activeWindow));
    269         return;
    270     }
    271     if (protocolIsJavaScript(m_frame->document()->url()))
    272         return;
    273     m_frame->navigationScheduler()->scheduleRefresh();
    274 }
    275 
    276 } // namespace WebCore
    277