7 # class for making http requests easier (mainly for plugins to use)
8 # this class can check the bot proxy configuration to determine if a proxy
9 # needs to be used, which includes support for per-url proxy configuration.
11 BotConfig.register BotConfigBooleanValue.new('http.use_proxy',
12 :default => false, :desc => "should a proxy be used for HTTP requests?")
13 BotConfig.register BotConfigStringValue.new('http.proxy_uri', :default => false,
14 :desc => "Proxy server to use for HTTP requests (URI, e.g http://proxy.host:port)")
15 BotConfig.register BotConfigStringValue.new('http.proxy_user',
17 :desc => "User for authenticating with the http proxy (if required)")
18 BotConfig.register BotConfigStringValue.new('http.proxy_pass',
20 :desc => "Password for authenticating with the http proxy (if required)")
21 BotConfig.register BotConfigArrayValue.new('http.proxy_include',
23 :desc => "List of regexps to check against a URI's hostname/ip to see if we should use the proxy to access this URI. All URIs are proxied by default if the proxy is set, so this is only required to re-include URIs that might have been excluded by the exclude list. e.g. exclude /.*\.foo\.com/, include bar\.foo\.com")
24 BotConfig.register BotConfigArrayValue.new('http.proxy_exclude',
25 :desc => "List of regexps to check against a URI's hostname/ip to see if we should use avoid the proxy to access this URI and access it directly")
30 'User-Agent' => "rbot http util #{$version} (http://linuxbrit.co.uk/rbot/)",
34 # if http_proxy_include or http_proxy_exclude are set, then examine the
35 # uri to see if this is a proxied uri
36 # the in/excludes are a list of regexps, and each regexp is checked against
37 # the server name, and its IP addresses
38 def proxy_required(uri)
40 if @bot.config["http.proxy_exclude"].empty? && @bot.config["http.proxy_include"].empty?
46 list.push Resolv.getaddresses(uri.host)
47 rescue StandardError => err
48 puts "warning: couldn't resolve host uri.host"
51 unless @bot.config["http.proxy_exclude"].empty?
52 re = @bot.config["http.proxy_exclude"].collect{|r| Regexp.new(r)}
62 unless @bot.config["http.proxy_include"].empty?
63 re = @bot.config["http.proxy_include"].collect{|r| Regexp.new(r)}
73 debug "using proxy for uri #{uri}?: #{use_proxy}"
77 # uri:: Uri to create a proxy for
79 # return a net/http Proxy object, which is configured correctly for
80 # proxying based on the bot's proxy configuration.
81 # This will include per-url proxy configuration based on the bot config
82 # +http_proxy_include/exclude+ options.
90 if @bot.config["http.use_proxy"]
91 if (ENV['http_proxy'])
92 proxy = URI.parse ENV['http_proxy']
94 if (@bot.config["http.proxy_uri"])
95 proxy = URI.parse ENV['http_proxy_uri']
98 debug "proxy is set to #{proxy.uri}"
99 if proxy_required(uri)
100 proxy_host = proxy.host
101 proxy_port = proxy.port
102 proxy_user = @bot.config["http.proxy_user"]
103 proxy_pass = @bot.config["http.proxy_pass"]
108 return Net::HTTP.new(uri.host, uri.port, proxy_host, proxy_port, proxy_user, proxy_port)
111 # uri:: uri to query (Uri object)
112 # readtimeout:: timeout for reading the response
113 # opentimeout:: timeout for opening the connection
115 # simple get request, returns response body if the status code is 200 and
116 # the request doesn't timeout.
117 def get(uri, readtimeout=10, opentimeout=5)
118 proxy = get_proxy(uri)
119 proxy.open_timeout = opentimeout
120 proxy.read_timeout = readtimeout
123 proxy.start() {|http|
124 resp = http.get(uri.request_uri(), @headers)
125 if resp.code == "200"
128 puts "HttpUtil.get return code #{resp.code} #{resp.body}"
132 rescue StandardError, Timeout::Error => e
133 $stderr.puts "HttpUtil.get exception: #{e}, while trying to get #{uri}"