lib/wechat/http_client.rb
# frozen_string_literal: true
require 'http'
module Wechat
class HttpClient
attr_reader :base, :ssl_context, :httprb
def initialize(base, network_setting)
@base = base
@httprb = if HTTP::VERSION.to_i >= 4
HTTP.timeout(write: network_setting.timeout, connect: network_setting.timeout, read: network_setting.timeout)
else
HTTP.timeout(:global, write: network_setting.timeout, connect: network_setting.timeout, read: network_setting.timeout)
end
unless network_setting.proxy_url.nil?
@httprb = @httprb.via(network_setting.proxy_url, network_setting.proxy_port.to_i, network_setting.proxy_username, network_setting.proxy_password)
end
@ssl_context = OpenSSL::SSL::SSLContext.new
@ssl_context.ssl_version = 'TLSv1_2'
@ssl_context.verify_mode = OpenSSL::SSL::VERIFY_NONE if network_setting.skip_verify_ssl
end
def get(path, get_header = {})
request(path, get_header) do |url, header|
params = header.delete(:params)
httprb.headers(header).get(url, params: params, ssl_context: ssl_context)
end
end
def post(path, payload, post_header = {})
request(path, post_header) do |url, header|
params = header.delete(:params)
httprb.headers(header).post(url, params: params, body: payload, ssl_context: ssl_context)
end
end
def post_file(path, file, post_header = {})
request(path, post_header) do |url, header|
params = header.delete(:params)
form_file = file.is_a?(HTTP::FormData::File) ? file : HTTP::FormData::File.new(file)
httprb.headers(header)
.post(url, params: params,
form: { media: form_file,
hack: 'X' }, # Existing here for http-form_data 1.0.1 handle single param improperly
ssl_context: ssl_context)
end
end
private
def request(path, header = {}, &_block)
url_base = header.delete(:base) || base
as = header.delete(:as)
header['Accept'] ||= 'application/json'
response = yield("#{url_base}#{path}", header)
raise "Request not OK, response status #{response.status}" if response.status != 200
parse_response(response, as || :json) do |parse_as, data|
break data unless parse_as == :json && data['errcode'].present?
case data['errcode']
when 0 # for request didn't expect results
data
# 42001: access_token timeout
# 40014: invalid access_token
# 40001, invalid credential, access_token is invalid or not latest hint
# 48001, api unauthorized hint, should not handle here # GH-230
when 42001, 40014, 40001
raise AccessTokenExpiredError
# 40029, invalid code for mp # GH-225
# 43004, require subscribe hint # GH-214
else
raise ResponseError.new(data['errcode'], data['errmsg'])
end
end
end
def parse_response(response, as_type)
content_type = response.headers[:content_type]
parse_as = {
%r{^application/json} => :json,
%r{^image/.*} => :file,
%r{^audio/.*} => :file,
%r{^voice/.*} => :file,
%r{^text/html} => :xml,
%r{^text/plain} => :probably_json
}.each_with_object([]) { |match, memo| memo << match[1] if content_type.match?(match[0]) }.first || as_type || :text
# try to parse response as json, fallback to user-specified format or text if failed
if parse_as == :probably_json
begin
data = JSON.parse response.body.to_s.gsub(/[\u0000-\u001f]+/, '')
rescue StandardError
nil
end
return yield(:json, data) if data
parse_as = as_type || :text
end
case parse_as
when :file
file = Tempfile.new('tmp')
file.binmode
file.write(response.body)
file.close
data = file
when :json
data = JSON.parse response.body
when :xml
data = Hash.from_xml(response.body.to_s)
else
data = response.body
end
yield(parse_as, data)
end
end
end