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#!/usr/bin/env ruby
# Usage: generate_certs
# Generate test certs for testing Faraday with SSL
require 'openssl'
require 'fileutils'
$shell = ARGV.include? '-s'
# Adapted from WEBrick::Utils. Skips cert extensions so it
# can be used as a CA bundle
def create_self_signed_cert(bits, cn, comment)
rsa =
cert =
cert.version = 2
cert.serial = 1
name =
cert.subject = name
cert.issuer = name
cert.not_before =
cert.not_after = + (365*24*60*60)
cert.public_key = rsa.public_key
return [cert, rsa]
def write(file, contents, env_var)
FileUtils.mkdir_p(File.dirname(file)), 'w') {|f| f.puts(contents) }
puts %(export #{env_var}="#{file}") if $shell
# One cert / CA for ease of testing when ignoring verification
cert, key = create_self_signed_cert(1024, [['CN', 'localhost']], 'Faraday Test CA')
write 'tmp/faraday-cert.key', key, 'SSL_KEY'
write 'tmp/faraday-cert.crt', cert, 'SSL_FILE'
# And a second CA to prove that verification can fail
cert, key = create_self_signed_cert(1024, [['CN', '']], 'A different CA')
write 'tmp/faraday-different-ca-cert.key', key, 'SSL_KEY_ALT'
write 'tmp/faraday-different-ca-cert.crt', cert, 'SSL_FILE_ALT'