Executing curl through Ruby script

Question

I'm trying to execute curl through Ruby script using two different methods and have some errors in both.

First method is using shell command

#!/usr/bin/ruby

`curl --cacert RepoCert --location --request POST 'https://test-service/rest/services/request/' --header 'Authorization: Basic amkkdksmmkk3XCf45DffSa23Ert' --header 'Content-Type: application/json' --data-binary "{ \"serviceID\": \"3\", \"TypeId\": \"52\", \"requestFieldValues\": { \"summary\": \"summary\", \"description\": \"something\", \"prority\": { \"id\": \"1\"}, \"customfield\": \"5\" }} "`

and I have an error

"Unexpected character (\u0027s\u0027 (code 115)): was expecting double-quote to start field name\n at [Source: com.itlab.jira.plugins.extender.helper.RequestWrapper$5db70c75; line:1, column:5]"

Also tried using Ruby Net::HTTP (code generated from https://jhawthorn.github.io/curl-to-ruby/)

require 'net/http'
require 'uri'
require 'json'

uri = URI.parse("https://test-service/rest/services/request/")
request = Net::HTTP::Post.new(uri)
request.content_type = "application/json"
request["Authorization"] = "Basic amkkdksmmkk3XCf45DffSa23Ert"
request.body = JSON.dump({
  "serviceID" => "3",
  "TypeId" => "52",
  "requestFieldValues" => {
    "summary" => "summary",
    "description" => "something",
    "prority" => {
      "id" => "1"
    },
    "customfield" => "5"
  }
})

req_options = {
  use_ssl: uri.scheme == "https",
}

response = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
  http.request(request)
end

and I get

/usr/share/ruby/net/http.rb:921:in `connect': SSL_connect returned=1 errno=0 state=error: certificate verify failed (OpenSSL::SSL::SSLError)

The problem is I have to use certificate authorization in this case so I can't ignore it.

Curl executed form command line is working fine. Any idea how to fix one of those methods (or both)?

First I'd switch from backticks to Open3 or the multi-argument form of Kernel#system. Those will bypass the shell and unwrap one layer of quoting/escaping. Then you can simple things like system('curl', '--cacert', 'RepoCert', ..., '--data-binary', ruby_hash.to_json) and stop worrying about who is interpreting which quotes and backslashes. — mu is too short
– mu is too short, Commented Nov 4, 2020 at 19:10
system('curl', ...) is a really brutal way of doing this, you lose a lot of control. Using Net::HTTP is a step up, if a bit more tricky. I'd recommend Faraday which is both powerful and fairly easy to use. — tadman
– tadman, Commented Nov 4, 2020 at 19:40

mila002 · Accepted Answer · 2020-11-04 20:26:41Z

1

Thanks guys for trying to help but I figure it out using Net::HTTP. I leave comment here if someone ever looked for a similar case.

require 'net/http'
require 'uri'
require 'json'

uri = URI.parse("https://test-service/rest/services/request/")
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_PEER
http.ca_file = "/directory/to/cert/file"

request = Net::HTTP::Post.new(uri.request_uri)

request.content_type = "application/json"
request["Authorization"] = "Basic amkkdksmmkk3XCf45DffSa23Ert"
request.body = JSON.dump({
  "serviceID" => "3",
  "TypeId" => "52",
  "requestFieldValues" => {
    "summary" => "summary",
    "description" => "something",
    "prority" => {
      "id" => "1"
    },
    "customfield" => "5"
  }
})


response = http.request(request)

answered Nov 4, 2020 at 20:26

mila002

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