Using Curl to pull down Call Log Data - shell

Question

I want to pull down call data from RingCentral using a shell script and curl. I'm then going to put that into ELK to build a dashboard using Kibana. However, I don't know what I'm doing with the API. Does anyone have a place for me to start or some sample code to do this?
I'm currently struggling with just using curl to authenticate to get a token. At the moment I keep getting unsupported grant type. I setup the application in Sandbox and a "Server Only No UI".
I have run this from a Centos 7 box using a bash shell.
Here is the code have tried:
curl -X POST "https://platform.devtest.ringcentral.com/restapi/oauth/token"; \
-H "Accept: application/json" \
-H "Content-Type: application/x-www-form-urlencoded" \
-u "my client id:my client secret" \
-d "username=username&password=password&extension=<extension>&grant_type=password"
I left the username and password blank because I wasn't sure what that was.
The output is as follows:
{
"error" : "invalid_request",
"error_description" : "Unsupported grant type",
"errors" : [ {
"errorCode" : "OAU-250",
"message" : "Unsupported grant type"
} ]
}./rctest1.sh: line 2: -H: command not found

Answer 1

I've been able to reproduce your error and can resolve it by removing the semi-colon (;) after the URL in your command.
Explanation
A semi-colon creates two separate CLI commands instead of one, so in your call, you have two requests.
- Your Request 1
$ curl -X POST "https://platform.devtest.ringcentral.com/restapi/oauth/token"
- Your Request 2
$ -H "Accept: application/json" \
-H "Content-Type: application/x-www-form-urlencoded" \
-u "my client id:my client secret" \
-d "username=username&password=password&extension=&grant_type=password"
- Your Response 1
{
"error" : "invalid_request",
"error_description" : "Unsupported grant type",
"errors" : [ {
"errorCode" : "OAU-250",
"message" : "Unsupported grant type"
} ]
}
- Your Response 2
./rctest1.sh: line 2: -H: command not found
- Test Command
Here's a simple test showing the OS trying to process two commands:
$ hello;world
-bash: hello: command not found
-bash: world: command not found
Solution
- Working Request
Here is a working request without the semi-colon:
$ curl -X POST "https://platform.devtest.ringcentral.com/restapi/oauth/token" \
-H "Accept: application/json" \
-H "Content-Type: application/x-www-form-urlencoded" \
-u "my client id:my client secret" \
-d "username=username&password=password&extension=&grant_type=password"
- Working Response
Here is the working response:
{
"access_token" : "myAccessToken",
"token_type" : "bearer",
"expires_in" : 3600,
"refresh_token" : "myRefreshToken",
"refresh_token_expires_in" : 604800,
"scope" : "Meetings VoipCalling Glip SubscriptionWebhook Faxes Contacts RingOut SMS",
"owner_id" : "11111111",
"endpoint_id" : "22222222"
}