Getting Instance Name of Org

Question

i am stuck in a problem.i have to call rest api but i have to get session id from a visual force page .in cookies there is sid from where i can get session id.but from where i get the instance_name of org.suppose i am trying to create a chrome extension.in which i have to call rest api and dont want to use oauth for extension instead when an authorized page visited then this extension is visible omnibox extension.please guideline how to get instance_name like ap1 etc in visualforce page from javascript ??

Answer 1

Since you have access to Visualforce, you can have the Visualforce page pass System.Url.getSalesforceBaseUrl().toExternalForm() to your JavaScript, or you could set up a @RemoteAction to obtain the same information. You can also just ask for the session ID in Visualforce as well instead of reading sid.

One possible Visualforce page follows:

Class:

public with sharing class myController {
    public String getSalesforceUrl() {
        return System.Url.getSalesforceBaseUrl().toExternalForm();
    }
    public String getSessionId() {
        return UserInfo.getSessionId();
    }
}

Page:

<apex:page controller="myController">
<script>
function getSalesforceUrl() {
    return '{!JSENCODE(salesforceUrl)}';
}
function getSessionId() {
    return '{!JSENCODE(sessionId)}';
}
</script>
</apex:page>

Have your extension load the page and call window.getSalesforceUrl() and window.getSessionId().

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Getting the correct host from a window reference:

var sfHost = window.location.hostname;

Getting the SID from a window reference:

var sid = window.contentDocument.cookie.match(/sid=(.+?);/)[1];