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| Undocumented. |
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| This parameter was added in version |
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| <div id="pageTitle"> |
| <h1 class="page_title">Permission Warnings</h1> |
| </div> |
| <!-- TABLE OF CONTENTS --> |
| <div id="toc"> |
| <h2>Contents</h2> |
| <ol> |
| <li> |
| <a href="#examples"> Examples of permission warnings </a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li><li> |
| <a href="#warnings"> Warnings and their triggers </a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li><li> |
| <a href="#nowarning"> Permissions that don't cause warnings </a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li><li> |
| <a href="#test"> Testing permission warnings </a> |
| <ol> |
| <li style="display: none; "> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li> |
| <li style="display: none; "> |
| <a href="#apiReference">API reference</a> |
| <ol> |
| <li> |
| <a href="#properties">Properties</a> |
| <ol> |
| <li> |
| <a href="#property-anchor">propertyName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#methods">Methods</a> |
| <ol> |
| <li> |
| <a href="#method-anchor">methodName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#events">Events</a> |
| <ol> |
| <li> |
| <a href="#event-anchor">eventName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#types">Types</a> |
| <ol> |
| <li> |
| <a href="#id-anchor">id</a> |
| </li> |
| </ol> |
| </li> |
| </ol> |
| </li> |
| </ol> |
| </div> |
| <!-- /TABLE OF CONTENTS --> |
| |
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| <!-- STATIC CONTENT PLACEHOLDER --> |
| <div id="static"><div id="pageData-name" class="pageData">Permission Warnings</div> |
| <div id="pageData-showTOC" class="pageData">true</div> |
| |
| <p> |
| To use most chrome.* APIs and extension capabilities, |
| your extension must declare its intent in the manifest, |
| often in the "permissions" field. |
| Some of these declarations |
| result in a warning when |
| a user installs your extension. |
| </p> |
| |
| <p> |
| When you autoupdate your extension, |
| the user might see another warning |
| if the extension requests new permissions. |
| These new permissions might be new APIs that your extension uses, |
| or they might be new websites |
| that your extension needs access to. |
| </p> |
| |
| |
| <h2 id="examples"> Examples of permission warnings </h2> |
| |
| <p> |
| Here's a typical dialog |
| that a user might see when installing an extension: |
| </p> |
| |
| <img src="images/perms-hw1.png" width="387" height="162" alt="Permission warning: 'This extension can access: Your data on api.flickr.com'"> |
| |
| <p> |
| The warning about access to data on api.flickr.com |
| is caused by the following lines |
| in the extension's manifest: |
| </p> |
| |
| <pre>"permissions": [ |
| <b>"http://api.flickr.com/"</b> |
| ], |
| </pre> |
| |
| <p class="note"> |
| <b>Note:</b> |
| You don't see permission warnings when |
| you load an unpacked extension. |
| You get permission warnings only when you install an extension |
| from a <code>.crx</code> file. |
| </p> |
| |
| <p> |
| If you add a permission to the extension when you autoupdate it, |
| the user might see a new permission warning. |
| For example, |
| assume you add a new site and the "tabs" permission |
| to the previous example: |
| </p> |
| |
| <pre>"permissions": [ |
| "http://api.flickr.com/", |
| <b>"http://*.flickr.com/", |
| "tabs"</b> |
| ], |
| </pre> |
| |
| <p> |
| When the extension autoupdates, |
| the increased permissions |
| cause the extension to be disabled |
| until the user re-enables it. |
| Here's the warning the user sees: |
| </p> |
| |
| <img src="images/perms-hw2-disabled.png" width="814" height="30" alt="Warning text: 'The newest version of the extension Hello World requires more permissions, so it has been disabled. [Re-enable].'"> |
| |
| <p> |
| Clicking the Re-enable button |
| brings up the following warning: |
| </p> |
| |
| <img src="images/perms-hw2.png" width="387" height="190" alt="Permission warning: 'This extension can access: Your data on api.flickr.com and flickr.com; Your browsing history'"> |
| |
| |
| <h2 id="warnings"> Warnings and their triggers </h2> |
| |
| <p> |
| It can be surprising when adding a permission such as "tabs" |
| results in the seemingly unrelated warning |
| that the extension can access your browsing history. |
| The reason for the warning is that |
| although the <code>chrome.tabs</code> API |
| might be used only to open new tabs |
| (<a href="tabs.html#method-create"><code>chrome.tabs.create()</code></a>), |
| it can also be used to see the URL that's associated |
| with every newly opened tab |
| (using their <a href="tabs.html#type-Tab">Tab</a> objects). |
| </p> |
| |
| <p class="note"> |
| <b>Note:</b> |
| As of Google Chrome 7, |
| you no longer need to specify the "tabs" permission |
| just to call <code>chrome.tabs.create()</code>. |
| </p> |
| |
| <p> |
| The following table lists the warning messages |
| that users can see, |
| along with the <a href="manifest.html">manifest</a> entries |
| that trigger them. |
| </p> |
| |
| <p> |
| </p><table> |
| <tbody><tr> |
| <th>Warning message</th> <th>Manifest entry that causes it</th> <th>Notes</th> |
| </tr> |
| |
| <tr> |
| <td style="font-weight:bold"> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_FULL_ACCESS --> |
| All data on your computer and the websites you visit |
| </td> |
| <td> |
| "plugins" |
| </td> |
| <td> |
| The "plugins" permission is required by |
| <a href="npapi.html">NPAPI plugins</a>. |
| </td> |
| </tr> |
| |
| <tr> |
| <td style="font-weight:bold"> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_BOOKMARKS --> |
| Your bookmarks |
| </td> |
| <td> |
| "bookmarks" permission |
| </td> |
| <td> |
| The "bookmarks" permission is required by the |
| <a href="bookmarks.html"><code>chrome.bookmarks</code></a> module. |
| </td> |
| </tr> |
| |
| <tr> |
| <td style="font-weight:bold"> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_BROWSING_HISTORY --> |
| Your browsing history |
| </td> |
| <td> |
| <!-- HasEffectiveBrowsingHistoryPermission --> |
| "history" or "tabs" permission |
| </td> |
| <td> |
| <p> |
| The "tabs" permission is required by the |
| <a href="tabs.html"><code>chrome.tabs</code></a> and |
| <a href="windows.html"><code>chrome.windows</code></a> modules. |
| </p> |
| <p> |
| The "history" permission is required by |
| <a href="history.html"><code>chrome.history</code></a>. |
| </p> |
| <p> |
| Adding "tabs" to an existing extension |
| that already has "history", or vice versa, |
| doesn't cause a warning when the extension is autoupdated. |
| </p> |
| </td> |
| </tr> |
| |
| <tr> |
| <td style="font-weight:bold"> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_ALL_HOSTS --> |
| Your data on all websites |
| </td> |
| <td> |
| <!-- HasEffectiveAccessToAllHosts() --> |
| Any of the following: |
| <ul> |
| <li> "proxy" permission (experimental) </li> |
| <li> A match pattern in the "permissions" field |
| that matches all hosts </li> |
| <li> A "content_scripts" field with a "matches" entry |
| that matches all hosts </li> |
| </ul> |
| </td> |
| <td> |
| <p> |
| The "proxy" permission is required by the |
| <a href="http://code.google.com/chrome/extensions/dev/experimental.proxy.html">experimental proxy</a> module. |
| </p> |
| |
| <p> |
| Any of the following URLs match all hosts: |
| </p> |
| <ul> |
| <li> <code>http://*/*</code> </li> |
| <li> <code>https://*/*</code> </li> |
| <li> <code>*://*/*</code> </li> |
| <li> <code><all_urls></code> </li> |
| </ul> |
| </td> |
| </tr> |
| <tr> |
| <td style="font-weight:bold"> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_?_HOST --> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_4_OR_MORE_HOSTS --> |
| Your data on <em>{list of websites}</em> |
| </td> |
| <td> |
| A match pattern in the "permissions" field |
| that specifies one or more hosts, |
| but not all hosts |
| </td> |
| <td> |
| <p> |
| Up to 3 sites are listed by name. |
| Subdomains aren't treated specially. |
| For example, <code>a.com</code> and <code>b.a.com</code> |
| are listed as different sites. |
| </p> |
| |
| <p> |
| On autoupdate, |
| the user sees a permission warning |
| if the extension adds or changes sites. |
| For example, going from <code>a.com,b.com</code> |
| to <code>a.com,b.com,c.com</code> |
| triggers a warning. |
| Going from <code>b.a.com</code> |
| to <code>a.com</code>, |
| or vice versa, |
| also triggers a warning. |
| </p> |
| </td> |
| </tr> |
| |
| <tr> |
| <td style="font-weight:bold"> |
| <!-- IDS_EXTENSION_PROMPT2_WARNING_GEOLOCATION --> |
| Your physical location |
| </td> |
| <td> |
| "geolocation" permission |
| </td> |
| <td> |
| Allows the extension to use the proposed HTML5 |
| <a href="http://dev.w3.org/geo/api/spec-source.html">geolocation API</a> |
| without prompting the user for permission. |
| </td> |
| </tr> |
| </tbody></table> |
| <p></p> |
| |
| |
| <h2 id="nowarning"> Permissions that don't cause warnings </h2> |
| |
| <p> |
| The following permissions don't result in a warning: |
| </p> |
| |
| <ul> |
| <li>"chrome://favicon/"</li> |
| <li>"contextMenus"</li> |
| <li>"cookies"</li> |
| <li>"experimental"</li> |
| <li>"idle"</li> |
| <li>"notifications"</li> |
| <li>"unlimitedStorage"</li> |
| </ul> |
| |
| <h2 id="test"> Testing permission warnings </h2> |
| |
| <p> |
| If you'd like to see exactly which warnings your users will get, |
| <a href="packaging.html">package your extension</a> |
| into a <code>.crx</code> file, |
| and install it. |
| </p> |
| |
| <p> |
| To see the warnings users will get when your extension is autoupdated, |
| you can go to a little more trouble |
| and set up an autoupdate server. |
| To do this, first create an update manifest |
| and point to it from your extension, |
| using the "update_url" key |
| (see <a href="autoupdate.html">Autoupdating</a>). |
| Next, <a href="packaging.html">package the extension</a> |
| into a new <code>.crx</code> file, |
| and install the app from this <code>.crx</code> file. |
| Now, change the extension's manifest to contain the new permissions, |
| and <a href="packaging.html#update">repackage the extension</a>. |
| Finally, update the extension |
| (and all other extensions that have outstanding updates) |
| by clicking the <b>chrome://extensions</b> page's |
| <b>Update extensions now</b> button. |
| </p> |
| </div> |
| |
| <!-- API PAGE --> |
| <div class="apiPage" style="display: none; "> |
| <a name="apiReference"></a> |
| <h2>API reference: chrome.apiname </h2> |
| |
| <!-- PROPERTIES --> |
| <div class="apiGroup"> |
| <a name="properties"></a> |
| <h3 id="properties">Properties</h3> |
| |
| <div> |
| <a></a> |
| <h4>getLastError</h4> |
| <div class="summary"> |
| <!-- Note: intentionally longer 80 columns --> |
| <span>chrome.extension</span><span>lastError</span> |
| </div> |
| <div> |
| </div> |
| </div> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- METHODS --> |
| <div class="apiGroup" id="methods"> |
| <a name="methods"></a> |
| <h3>Methods</h3> |
| |
| <!-- iterates over all functions --> |
| <div class="apiItem"> |
| <a></a> <!-- method-anchor --> |
| <h4>method name</h4> |
| |
| <div class="summary"><span>void</span> |
| <!-- Note: intentionally longer 80 columns --> |
| <span>chrome.module.methodName</span>(<span><span>, </span><span></span> |
| <var><span></span></var></span>)</div> |
| |
| <div class="description"> |
| <p class="todo">Undocumented.</p> |
| <p> |
| A description from the json schema def of the function goes here. |
| </p> |
| |
| <!-- PARAMETERS --> |
| <h4>Parameters</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| <!-- RETURNS --> |
| <h4>Returns</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| <!-- CALLBACK --> |
| <div> |
| <div> |
| <h4>Callback function</h4> |
| <p> |
| The callback <em>parameter</em> should specify a function |
| that looks like this: |
| </p> |
| <p> |
| If you specify the <em>callback</em> parameter, it should |
| specify a function that looks like this: |
| </p> |
| |
| <!-- Note: intentionally longer 80 columns --> |
| <pre>function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>;</pre> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </div> |
| </div> |
| |
| <!-- MIN_VERSION --> |
| <p> |
| This function was added in version <b><span></span></b>. |
| If you require this function, the manifest key |
| <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a> |
| can ensure that your extension won't be run in an earlier browser version. |
| </p> |
| </div> <!-- /description --> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- EVENTS --> |
| <div class="apiGroup"> |
| <a name="events"></a> |
| <h3 id="events">Events</h3> |
| |
| <!-- iterates over all events --> |
| <div class="apiItem"> |
| <a></a> |
| <h4>event name</h4> |
| |
| <div class="summary"> |
| <!-- Note: intentionally longer 80 columns --> |
| <span class="subdued">chrome.bookmarks</span><span>onEvent</span><span class="subdued">.addListener</span>(function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>); |
| </div> |
| |
| <div class="description"> |
| <p class="todo">Undocumented.</p> |
| <p> |
| A description from the json schema def of the event goes here. |
| </p> |
| |
| <!-- PARAMETERS --> |
| <h4>Parameters</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| </div> <!-- /decription --> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- TYPES --> |
| <div class="apiGroup"> |
| <a name="types"></a> |
| <h3 id="types">Types</h3> |
| |
| <!-- iterates over all types --> |
| <div class="apiItem"> |
| <a></a> |
| <h4>type name</h4> |
| |
| <div> |
| </div> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| </div> <!-- /apiPage --> |
| </div> <!-- /gc-pagecontent --> |
| </div> <!-- /g-section --> |
| </div> <!-- /codesiteContent --> |
| <div id="gc-footer" --=""> |
| <div class="text"> |
| <p> |
| Except as otherwise <a href="http://code.google.com/policies.html#restrictions">noted</a>, |
| the content of this page is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons |
| Attribution 3.0 License</a>, and code samples are licensed under the |
| <a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>. |
| </p> |
| <p> |
| ©2010 Google |
| </p> |
| |
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| <script src="http://www.google-analytics.com/ga.js" type="text/javascript"></script> |
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