Class: Mechanize::HTTP::Agent
- Inherits:
-
Object
- Object
- Mechanize::HTTP::Agent
- Defined in:
- lib/mechanize/http/agent.rb
Overview
An HTTP (and local disk access) user agent. This class is an implementation detail and is subject to change at any time.
Instance Attribute Summary collapse
-
#allowed_error_codes ⇒ Object
List of error codes to handle without raising an exception.
-
#auth_store ⇒ Object
readonly
:section: HTTP Authentication.
-
#authenticate_methods ⇒ Object
readonly
:nodoc:.
-
#conditional_requests ⇒ Object
Disables If-Modified-Since conditional requests (enabled by default).
-
#content_encoding_hooks ⇒ Object
readonly
A list of hooks to call to handle the content-encoding of a request.
-
#context ⇒ Object
The context parses responses into pages.
-
#cookie_jar ⇒ Object
The cookies for this agent.
-
#digest_challenges ⇒ Object
readonly
:nodoc:.
-
#follow_meta_refresh ⇒ Object
Follow HTML meta refresh and HTTP Refresh.
-
#follow_meta_refresh_self ⇒ Object
Follow an HTML meta refresh that has no “url=” in the content attribute.
-
#gzip_enabled ⇒ Object
Is gzip compression of requests enabled?.
-
#history ⇒ Object
history of requests made.
-
#http ⇒ Object
readonly
:nodoc:.
-
#ignore_bad_chunking ⇒ Object
When set to true mechanize will ignore an EOF during chunked transfer encoding so long as at least one byte was received.
-
#keep_alive ⇒ Object
Set to false to disable HTTP/1.1 keep-alive requests.
-
#max_file_buffer ⇒ Object
Responses larger than this will be written to a Tempfile instead of stored in memory.
-
#open_timeout ⇒ Object
Length of time to wait until a connection is opened in seconds.
-
#pass ⇒ Object
OpenSSL key password.
-
#post_connect_hooks ⇒ Object
readonly
A list of hooks to call after retrieving a response.
-
#pre_connect_hooks ⇒ Object
readonly
A list of hooks to call before making a request.
-
#read_timeout ⇒ Object
Length of time to attempt to read data from the server.
-
#redirect_ok ⇒ Object
Controls how this agent deals with redirects.
-
#redirection_limit ⇒ Object
Maximum number of redirects to follow.
-
#request_headers ⇒ Object
A hash of request headers to be used for every request.
-
#robots ⇒ Object
When true, this agent will consult the site’s robots.txt for each access.
-
#scheme_handlers ⇒ Object
Handlers for various URI schemes.
-
#user_agent ⇒ Object
The User-Agent header to send.
Instance Method Summary collapse
-
#add_auth(uri, user, password, realm = nil, domain = nil) ⇒ Object
Adds credentials
user
,pass
foruri
. -
#add_default_auth(user, password, domain = nil) ⇒ Object
USE OF add_default_auth IS NOT RECOMMENDED AS IT MAY EXPOSE PASSWORDS TO THIRD PARTIES.
-
#auto_io(name, read_size, input_io) ⇒ Object
Creates a new output IO by reading
input_io
inread_size
chunks. -
#back ⇒ Object
Equivalent to the browser back button.
-
#ca_file ⇒ Object
Path to an OpenSSL CA certificate file.
-
#ca_file=(ca_file) ⇒ Object
Sets the path to an OpenSSL CA certificate file.
-
#cert_store ⇒ Object
The SSL certificate store used for validating connections.
-
#cert_store=(cert_store) ⇒ Object
Sets the SSL certificate store used for validating connections.
-
#certificate ⇒ Object
The client X509 certificate.
-
#certificate=(certificate) ⇒ Object
Sets the client certificate to given X509 certificate.
-
#connection_for(uri) ⇒ Object
:section: Request.
-
#content_encoding_gunzip(body_io) ⇒ Object
Decodes a gzip-encoded
body_io
. -
#content_encoding_inflate(body_io) ⇒ Object
Decodes a deflate-encoded
body_io
. -
#current_page ⇒ Object
Returns the latest page loaded by the agent.
- #disable_keep_alive(request) ⇒ Object
- #enable_gzip(request) ⇒ Object
-
#fetch(uri, method = :get, headers = {}, params = [], referer = current_page, redirects = 0) ⇒ Object
Retrieves
uri
and parses it into a page or other object according to PluggableParser. -
#get_meta_refresh(response, uri, page) ⇒ Object
:section: Response.
-
#get_robots(uri) ⇒ Object
:section: Robots.
-
#hook_content_encoding(response, uri, response_body_io) ⇒ Object
:section: Hooks.
- #http_request(uri, method, params = nil) ⇒ Object
-
#idle_timeout ⇒ Object
Reset connections that have not been used in this many seconds.
-
#idle_timeout=(timeout) ⇒ Object
Sets the connection idle timeout for persistent connections.
- #inflate(compressed, window_bits = nil) ⇒ Object
-
#initialize(connection_name = 'mechanize') ⇒ Agent
constructor
The connection_name can be used to segregate SSL connections.
- #log ⇒ Object
- #make_tempfile(name) ⇒ Object
-
#max_history ⇒ Object
Returns the maximum size for the history stack.
-
#max_history=(length) ⇒ Object
Set the maximum size for the history stack.
-
#post_connect(uri, response, body_io) ⇒ Object
Invokes hooks added to post_connect_hooks after a
response
is returned and the responsebody
is handled. -
#pre_connect(request) ⇒ Object
Invokes hooks added to pre_connect_hooks before a
request
is made. -
#private_key ⇒ Object
An OpenSSL private key or the path to a private key.
-
#private_key=(private_key) ⇒ Object
Sets the client’s private key.
-
#proxy_uri ⇒ Object
URI for a proxy connection.
- #request_add_headers(request, headers = {}) ⇒ Object
- #request_auth(request, uri) ⇒ Object
- #request_auth_digest(request, uri, realm, base_uri, iis) ⇒ Object
- #request_cookies(request, uri) ⇒ Object
- #request_host(request, uri) ⇒ Object
- #request_language_charset(request) ⇒ Object
-
#request_log(request) ⇒ Object
Log specified headers for the request.
-
#request_referer(request, uri, referer) ⇒ Object
Sets a Referer header.
- #request_user_agent(request) ⇒ Object
- #reset ⇒ Object
- #resolve(uri, referer = current_page) ⇒ Object
- #resolve_parameters(uri, method, parameters) ⇒ Object
- #response_authenticate(response, page, uri, request, headers, params, referer) ⇒ Object
- #response_content_encoding(response, body_io) ⇒ Object
- #response_cookies(response, uri, page) ⇒ Object
- #response_follow_meta_refresh(response, uri, page, redirects) ⇒ Object
- #response_log(response) ⇒ Object
- #response_parse(response, body_io, uri) ⇒ Object
- #response_read(response, request, uri) ⇒ Object
- #response_redirect(response, method, page, redirects, headers, referer = current_page) ⇒ Object
-
#retry_change_requests ⇒ Object
Retry non-idempotent requests?.
-
#retry_change_requests=(retri) ⇒ Object
Retry non-idempotent requests.
-
#robots_allowed?(uri) ⇒ Boolean
Tests if this agent is allowed to access
url
, consulting the site’s robots.txt. -
#robots_disallowed?(url) ⇒ Boolean
Opposite of robots_allowed?.
-
#robots_error(url) ⇒ Object
Returns an error object if there is an error in fetching or parsing robots.txt of the site
url
. -
#robots_error!(url) ⇒ Object
Raises the error if there is an error in fetching or parsing robots.txt of the site
url
. -
#robots_reset(url) ⇒ Object
Removes robots.txt cache for the site
url
. - #save_cookies(uri, set_cookie) ⇒ Object
- #secure_resolve!(uri, referer = current_page) ⇒ Object
-
#set_proxy(addr, port, user = nil, pass = nil) ⇒ Object
Sets the proxy address, port, user, and password
addr
should be a host, with no “http://”,port
may be a port number, service name or port number string. -
#shutdown ⇒ Object
Closes all open connections for this agent.
-
#ssl_version ⇒ Object
SSL version to use.
-
#ssl_version=(ssl_version) ⇒ Object
Sets the SSL version to use.
- #use_tempfile?(size) ⇒ Boolean
-
#verify_callback ⇒ Object
A callback for additional certificate verification.
-
#verify_callback=(verify_callback) ⇒ Object
Sets the certificate verify callback.
-
#verify_mode ⇒ Object
How to verify SSL connections.
-
#verify_mode=(verify_mode) ⇒ Object
Sets the mode for verifying SSL connections.
-
#visited_page(url) ⇒ Object
Returns a visited page for the url passed in, otherwise nil.
- #webrobots ⇒ Object
Constructor Details
#initialize(connection_name = 'mechanize') ⇒ Agent
The connection_name can be used to segregate SSL connections. Agents with different names will not share the same persistent connection.
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# File 'lib/mechanize/http/agent.rb', line 130 def initialize(connection_name = 'mechanize') @allowed_error_codes = [] @conditional_requests = true @context = nil @content_encoding_hooks = [] @cookie_jar = Mechanize::CookieJar.new @follow_meta_refresh = false @follow_meta_refresh_self = false @gzip_enabled = true @history = Mechanize::History.new @ignore_bad_chunking = false @keep_alive = true @max_file_buffer = 100_000 # 5MB for response bodies @open_timeout = nil @post_connect_hooks = [] @pre_connect_hooks = [] @read_timeout = nil @redirect_ok = true @redirection_limit = 20 @request_headers = {} @robots = false @user_agent = nil @webrobots = nil # HTTP Authentication @auth_store = Mechanize::HTTP::AuthStore.new @authenticate_parser = Mechanize::HTTP::WWWAuthenticateParser.new @authenticate_methods = Hash.new do |methods, uri| methods[uri] = Hash.new do |realms, auth_scheme| realms[auth_scheme] = [] end end @digest_auth = Net::HTTP::DigestAuth.new @digest_challenges = {} # SSL @pass = nil @scheme_handlers = Hash.new { |h, scheme| h[scheme] = lambda { |link, page| raise Mechanize::UnsupportedSchemeError.new(scheme, link) } } @scheme_handlers['http'] = lambda { |link, page| link } @scheme_handlers['https'] = @scheme_handlers['http'] @scheme_handlers['relative'] = @scheme_handlers['http'] @scheme_handlers['file'] = @scheme_handlers['http'] @http = Net::HTTP::Persistent.new connection_name @http.idle_timeout = 5 @http.keep_alive = 300 end |
Instance Attribute Details
#allowed_error_codes ⇒ Object
List of error codes to handle without raising an exception.
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# File 'lib/mechanize/http/agent.rb', line 76 def allowed_error_codes @allowed_error_codes end |
#auth_store ⇒ Object (readonly)
:section: HTTP Authentication
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# File 'lib/mechanize/http/agent.rb', line 46 def auth_store @auth_store end |
#authenticate_methods ⇒ Object (readonly)
:nodoc:
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# File 'lib/mechanize/http/agent.rb', line 47 def authenticate_methods @authenticate_methods end |
#conditional_requests ⇒ Object
Disables If-Modified-Since conditional requests (enabled by default)
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# File 'lib/mechanize/http/agent.rb', line 15 def conditional_requests @conditional_requests end |
#content_encoding_hooks ⇒ Object (readonly)
A list of hooks to call to handle the content-encoding of a request.
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# File 'lib/mechanize/http/agent.rb', line 42 def content_encoding_hooks @content_encoding_hooks end |
#context ⇒ Object
The context parses responses into pages
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# File 'lib/mechanize/http/agent.rb', line 111 def context @context end |
#cookie_jar ⇒ Object
The cookies for this agent
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# File 'lib/mechanize/http/agent.rb', line 102 def @cookie_jar end |
#digest_challenges ⇒ Object (readonly)
:nodoc:
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# File 'lib/mechanize/http/agent.rb', line 48 def digest_challenges @digest_challenges end |
#follow_meta_refresh ⇒ Object
Follow HTML meta refresh and HTTP Refresh. If set to :anywhere
meta refresh tags outside of the head element will be followed.
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# File 'lib/mechanize/http/agent.rb', line 54 def @follow_meta_refresh end |
#follow_meta_refresh_self ⇒ Object
Follow an HTML meta refresh that has no “url=” in the content attribute.
Defaults to false to prevent infinite refresh loops.
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# File 'lib/mechanize/http/agent.rb', line 59 def @follow_meta_refresh_self end |
#gzip_enabled ⇒ Object
Is gzip compression of requests enabled?
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# File 'lib/mechanize/http/agent.rb', line 18 def gzip_enabled @gzip_enabled end |
#history ⇒ Object
history of requests made
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# File 'lib/mechanize/http/agent.rb', line 29 def history @history end |
#http ⇒ Object (readonly)
:nodoc:
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# File 'lib/mechanize/http/agent.rb', line 113 def http @http end |
#ignore_bad_chunking ⇒ Object
When set to true mechanize will ignore an EOF during chunked transfer encoding so long as at least one byte was received. Be careful when enabling this as it may cause data loss.
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# File 'lib/mechanize/http/agent.rb', line 118 def ignore_bad_chunking @ignore_bad_chunking end |
#keep_alive ⇒ Object
Set to false to disable HTTP/1.1 keep-alive requests
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# File 'lib/mechanize/http/agent.rb', line 91 def keep_alive @keep_alive end |
#max_file_buffer ⇒ Object
Responses larger than this will be written to a Tempfile instead of stored in memory. Setting this to nil disables creation of Tempfiles.
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# File 'lib/mechanize/http/agent.rb', line 106 def max_file_buffer @max_file_buffer end |
#open_timeout ⇒ Object
Length of time to wait until a connection is opened in seconds
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# File 'lib/mechanize/http/agent.rb', line 94 def open_timeout @open_timeout end |
#pass ⇒ Object
OpenSSL key password
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# File 'lib/mechanize/http/agent.rb', line 86 def pass @pass end |
#post_connect_hooks ⇒ Object (readonly)
A list of hooks to call after retrieving a response. Hooks are called with the agent and the response returned.
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# File 'lib/mechanize/http/agent.rb', line 35 def post_connect_hooks @post_connect_hooks end |
#pre_connect_hooks ⇒ Object (readonly)
A list of hooks to call before making a request. Hooks are called with the agent and the request to be performed.
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# File 'lib/mechanize/http/agent.rb', line 39 def pre_connect_hooks @pre_connect_hooks end |
#read_timeout ⇒ Object
Length of time to attempt to read data from the server
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# File 'lib/mechanize/http/agent.rb', line 97 def read_timeout @read_timeout end |
#redirect_ok ⇒ Object
Controls how this agent deals with redirects. The following values are allowed:
- :all, true
-
All 3xx redirects are followed (default)
- :permanent
-
Only 301 Moved Permanantly redirects are followed
- false
-
No redirects are followed
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# File 'lib/mechanize/http/agent.rb', line 67 def redirect_ok @redirect_ok end |
#redirection_limit ⇒ Object
Maximum number of redirects to follow
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# File 'lib/mechanize/http/agent.rb', line 70 def redirection_limit @redirection_limit end |
#request_headers ⇒ Object
A hash of request headers to be used for every request
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# File 'lib/mechanize/http/agent.rb', line 21 def request_headers @request_headers end |
#robots ⇒ Object
When true, this agent will consult the site’s robots.txt for each access.
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# File 'lib/mechanize/http/agent.rb', line 81 def robots @robots end |
#scheme_handlers ⇒ Object
Handlers for various URI schemes
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# File 'lib/mechanize/http/agent.rb', line 121 def scheme_handlers @scheme_handlers end |
#user_agent ⇒ Object
The User-Agent header to send
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# File 'lib/mechanize/http/agent.rb', line 24 def user_agent @user_agent end |
Instance Method Details
#add_auth(uri, user, password, realm = nil, domain = nil) ⇒ Object
Adds credentials user
, pass
for uri
. If realm
is set the credentials are used only for that realm. If realm
is not set the credentials become the default for any realm on that URI.
domain
and realm
are exclusive as NTLM does not follow RFC 2617. If domain
is given it is only used for NTLM authentication.
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# File 'lib/mechanize/http/agent.rb', line 192 def add_auth uri, user, password, realm = nil, domain = nil @auth_store.add_auth uri, user, password, realm, domain end |
#add_default_auth(user, password, domain = nil) ⇒ Object
USE OF add_default_auth IS NOT RECOMMENDED AS IT MAY EXPOSE PASSWORDS TO THIRD PARTIES
Adds credentials user
, pass
as the default authentication credentials. If no other credentials are available these will be returned from credentials_for.
If domain
is given it is only used for NTLM authentication.
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# File 'lib/mechanize/http/agent.rb', line 206 def add_default_auth user, password, domain = nil # :nodoc: @auth_store.add_default_auth user, password, domain end |
#auto_io(name, read_size, input_io) ⇒ Object
Creates a new output IO by reading input_io
in read_size
chunks. If the output is over the max_file_buffer size a Tempfile with name
is created.
If a block is provided, each chunk of input_io
is yielded for further processing.
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# File 'lib/mechanize/http/agent.rb', line 1153 def auto_io name, read_size, input_io out_io = StringIO.new.set_encoding(Encoding::BINARY) until input_io.eof? do if StringIO === out_io and use_tempfile? out_io.size then new_io = make_tempfile name new_io.write out_io.string out_io = new_io end chunk = input_io.read read_size chunk = yield chunk if block_given? out_io.write chunk end out_io.rewind out_io end |
#back ⇒ Object
Equivalent to the browser back button. Returns the most recent page visited.
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# File 'lib/mechanize/http/agent.rb', line 349 def back @history.pop end |
#ca_file ⇒ Object
Path to an OpenSSL CA certificate file
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# File 'lib/mechanize/http/agent.rb', line 1044 def ca_file @http.ca_file end |
#ca_file=(ca_file) ⇒ Object
Sets the path to an OpenSSL CA certificate file
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# File 'lib/mechanize/http/agent.rb', line 1049 def ca_file= ca_file @http.ca_file = ca_file end |
#cert_store ⇒ Object
The SSL certificate store used for validating connections
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# File 'lib/mechanize/http/agent.rb', line 1054 def cert_store @http.cert_store end |
#cert_store=(cert_store) ⇒ Object
Sets the SSL certificate store used for validating connections
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# File 'lib/mechanize/http/agent.rb', line 1059 def cert_store= cert_store @http.cert_store = cert_store end |
#certificate ⇒ Object
The client X509 certificate
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# File 'lib/mechanize/http/agent.rb', line 1064 def certificate @http.certificate end |
#certificate=(certificate) ⇒ Object
Sets the client certificate to given X509 certificate. If a path is given the certificate will be loaded and set.
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# File 'lib/mechanize/http/agent.rb', line 1070 def certificate= certificate certificate = if OpenSSL::X509::Certificate === certificate then certificate else OpenSSL::X509::Certificate.new File.read certificate end @http.certificate = certificate end |
#connection_for(uri) ⇒ Object
:section: Request
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# File 'lib/mechanize/http/agent.rb', line 412 def connection_for uri case uri.scheme.downcase when 'http', 'https' then return @http when 'file' then return Mechanize::FileConnection.new end end |
#content_encoding_gunzip(body_io) ⇒ Object
Decodes a gzip-encoded body_io
. If it cannot be decoded, inflate is tried followed by raising an error.
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# File 'lib/mechanize/http/agent.rb', line 430 def content_encoding_gunzip body_io log.debug('gzip response') if log zio = Zlib::GzipReader.new body_io out_io = auto_io 'mechanize-gunzip', 16384, zio zio.finish return out_io rescue Zlib::Error => gz_error log.warn "unable to gunzip response: #{gz_error} (#{gz_error.class})" if log body_io.rewind body_io.read 10 begin log.warn "trying raw inflate on response" if log return inflate body_io, -Zlib::MAX_WBITS rescue Zlib::Error => e log.error "unable to inflate response: #{e} (#{e.class})" if log raise end ensure # do not close a second time if we failed the first time zio.close if zio and !(zio.closed? or gz_error) body_io.close unless body_io.closed? end |
#content_encoding_inflate(body_io) ⇒ Object
Decodes a deflate-encoded body_io
. If it cannot be decoded, raw inflate is tried followed by raising an error.
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# File 'lib/mechanize/http/agent.rb', line 462 def content_encoding_inflate body_io log.debug('deflate body') if log return inflate body_io rescue Zlib::Error log.error('unable to inflate response, trying raw deflate') if log body_io.rewind begin return inflate body_io, -Zlib::MAX_WBITS rescue Zlib::Error => e log.error("unable to inflate response: #{e}") if log raise end ensure body_io.close end |
#current_page ⇒ Object
Returns the latest page loaded by the agent
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# File 'lib/mechanize/http/agent.rb', line 356 def current_page @history.last end |
#disable_keep_alive(request) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 481 def disable_keep_alive request request['connection'] = 'close' unless @keep_alive end |
#enable_gzip(request) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 485 def enable_gzip request request['accept-encoding'] = if @gzip_enabled 'gzip,deflate,identity' else 'identity' end end |
#fetch(uri, method = :get, headers = {}, params = [], referer = current_page, redirects = 0) ⇒ Object
Retrieves uri
and parses it into a page or other object according to PluggableParser. If the URI is an HTTP or HTTPS scheme URI the given HTTP method
is used to retrieve it, along with the HTTP headers
, request params
and HTTP referer
.
The final URI to access is built with uri
and params
, the latter of which is formatted into a string using Mechanize::Util.build_query_string, which see.
redirects
tracks the number of redirects experienced when retrieving the page. If it is over the redirection_limit an error will be raised.
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# File 'lib/mechanize/http/agent.rb', line 223 def fetch uri, method = :get, headers = {}, params = [], referer = current_page, redirects = 0 referer_uri = referer ? referer.uri : nil uri = resolve uri, referer uri, params = resolve_parameters uri, method, params request = http_request uri, method, params connection = connection_for uri request_auth request, uri disable_keep_alive request enable_gzip request request_language_charset request request, uri request_host request, uri request_referer request, uri, referer_uri request_user_agent request request_add_headers request, headers pre_connect request # Consult robots.txt if robots && uri.is_a?(URI::HTTP) robots_allowed?(uri) or raise Mechanize::RobotsDisallowedError.new(uri) end # Add If-Modified-Since if page is in history if page = visited_page(uri) and last_modified = page.response['Last-Modified'] request['If-Modified-Since'] = last_modified end if @conditional_requests # Specify timeouts if supplied and our connection supports them if @open_timeout && connection.respond_to?(:open_timeout=) connection.open_timeout = @open_timeout end if @read_timeout && connection.respond_to?(:read_timeout=) connection.read_timeout = @read_timeout end request_log request response_body_io = nil # Send the request begin response = connection.request(uri, request) { |res| response_log res response_body_io = response_read res, request, uri res } rescue Mechanize::ChunkedTerminationError => e raise unless @ignore_bad_chunking response = e.response response_body_io = e.body_io end hook_content_encoding response, uri, response_body_io response_body_io = response_content_encoding response, response_body_io if request.response_body_permitted? post_connect uri, response, response_body_io page = response_parse response, response_body_io, uri response, uri, page = response, uri, page, redirects return if if robots && page.is_a?(Mechanize::Page) page.parser.noindex? and raise Mechanize::RobotsDisallowedError.new(uri) end case response when Net::HTTPSuccess page when Mechanize::FileResponse page when Net::HTTPNotModified log.debug("Got cached page") if log visited_page(uri) || page when Net::HTTPRedirection response_redirect response, method, page, redirects, headers, referer when Net::HTTPUnauthorized response_authenticate(response, page, uri, request, headers, params, referer) else if @allowed_error_codes.any? {|code| code.to_s == page.code} then page else raise Mechanize::ResponseCodeError.new(page, 'unhandled response') end end end |
#get_meta_refresh(response, uri, page) ⇒ Object
:section: Response
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# File 'lib/mechanize/http/agent.rb', line 709 def response, uri, page return nil unless @follow_meta_refresh if page.respond_to?(:meta_refresh) and (redirect = page..first) then [redirect.delay, redirect.href] unless not @follow_meta_refresh_self and redirect.link_self elsif refresh = response['refresh'] delay, href, link_self = Mechanize::Page::MetaRefresh.parse refresh, uri raise Mechanize::Error, 'Invalid refresh http header' unless delay [delay.to_f, href] unless not @follow_meta_refresh_self and link_self end end |
#get_robots(uri) ⇒ Object
:section: Robots
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# File 'lib/mechanize/http/agent.rb', line 991 def get_robots(uri) # :nodoc: fetch(uri).body rescue Mechanize::ResponseCodeError => e return '' if e.response_code == '404' raise e end |
#hook_content_encoding(response, uri, response_body_io) ⇒ Object
:section: Hooks
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# File 'lib/mechanize/http/agent.rb', line 377 def hook_content_encoding response, uri, response_body_io @content_encoding_hooks.each do |hook| hook.call self, uri, response, response_body_io end end |
#http_request(uri, method, params = nil) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 493 def http_request uri, method, params = nil case uri.scheme.downcase when 'http', 'https' then klass = Net::HTTP.const_get(method.to_s.capitalize) request ||= klass.new(uri.request_uri) request.body = params.first if params request when 'file' then Mechanize::FileRequest.new uri end end |
#idle_timeout ⇒ Object
Reset connections that have not been used in this many seconds
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# File 'lib/mechanize/http/agent.rb', line 1134 def idle_timeout @http.idle_timeout end |
#idle_timeout=(timeout) ⇒ Object
Sets the connection idle timeout for persistent connections
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# File 'lib/mechanize/http/agent.rb', line 1139 def idle_timeout= timeout @http.idle_timeout = timeout end |
#inflate(compressed, window_bits = nil) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 1174 def inflate compressed, window_bits = nil inflate = Zlib::Inflate.new window_bits out_io = auto_io 'mechanize-inflate', 1024, compressed do |chunk| inflate.inflate chunk end inflate.finish out_io ensure inflate.close if inflate.finished? end |
#log ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 1188 def log @context.log end |
#make_tempfile(name) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 1224 def make_tempfile name io = Tempfile.new name io.unlink io.binmode io end |
#max_history ⇒ Object
Returns the maximum size for the history stack.
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# File 'lib/mechanize/http/agent.rb', line 361 def max_history @history.max_size end |
#max_history=(length) ⇒ Object
Set the maximum size for the history stack.
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# File 'lib/mechanize/http/agent.rb', line 366 def max_history=(length) @history.max_size = length end |
#post_connect(uri, response, body_io) ⇒ Object
Invokes hooks added to post_connect_hooks after a response
is returned and the response body
is handled.
Yields the context
, the uri
for the request, the response
and the response body
.
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# File 'lib/mechanize/http/agent.rb', line 390 def post_connect uri, response, body_io # :yields: agent, uri, response, body @post_connect_hooks.each do |hook| begin hook.call self, uri, response, body_io.read ensure body_io.rewind end end end |
#pre_connect(request) ⇒ Object
Invokes hooks added to pre_connect_hooks before a request
is made. Yields the agent
and the request
that will be performed to each hook.
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# File 'lib/mechanize/http/agent.rb', line 404 def pre_connect request # :yields: agent, request @pre_connect_hooks.each do |hook| hook.call self, request end end |
#private_key ⇒ Object
An OpenSSL private key or the path to a private key
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# File 'lib/mechanize/http/agent.rb', line 1081 def private_key @http.private_key end |
#private_key=(private_key) ⇒ Object
Sets the client’s private key
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# File 'lib/mechanize/http/agent.rb', line 1086 def private_key= private_key private_key = if OpenSSL::PKey::PKey === private_key then private_key else OpenSSL::PKey::RSA.new File.read(private_key), @pass end @http.private_key = private_key end |
#proxy_uri ⇒ Object
URI for a proxy connection
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# File 'lib/mechanize/http/agent.rb', line 323 def proxy_uri @http.proxy_uri end |
#request_add_headers(request, headers = {}) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 507 def request_add_headers request, headers = {} @request_headers.each do |k,v| request[k] = v end headers.each do |field, value| case field when :etag then request["ETag"] = value when :if_modified_since then request["If-Modified-Since"] = value when Symbol then raise ArgumentError, "unknown header symbol #{field}" else request[field] = value end end end |
#request_auth(request, uri) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 524 def request_auth request, uri base_uri = uri + '/' base_uri.user = nil base_uri.password = nil schemes = @authenticate_methods[base_uri] if realm = schemes[:digest].find { |r| r.uri == base_uri } then request_auth_digest request, uri, realm, base_uri, false elsif realm = schemes[:iis_digest].find { |r| r.uri == base_uri } then request_auth_digest request, uri, realm, base_uri, true elsif realm = schemes[:basic].find { |r| r.uri == base_uri } then user, password, = @auth_store.credentials_for uri, realm.realm request.basic_auth user, password end end |
#request_auth_digest(request, uri, realm, base_uri, iis) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 540 def request_auth_digest request, uri, realm, base_uri, iis challenge = @digest_challenges[realm] uri.user, uri.password, = @auth_store.credentials_for uri, realm.realm auth = @digest_auth.auth_header uri, challenge.to_s, request.method, iis request['Authorization'] = auth end |
#request_cookies(request, uri) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 549 def request, uri return if @cookie_jar.empty? uri = @cookie_jar. uri return if .empty? request.add_field 'Cookie', .join('; ') end |
#request_host(request, uri) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 559 def request_host request, uri port = [80, 443].include?(uri.port.to_i) ? nil : uri.port host = uri.host request['Host'] = [host, port].compact.join ':' end |
#request_language_charset(request) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 566 def request_language_charset request request['accept-charset'] = 'ISO-8859-1,utf-8;q=0.7,*;q=0.7' request['accept-language'] = 'en-us,en;q=0.5' end |
#request_log(request) ⇒ Object
Log specified headers for the request
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# File 'lib/mechanize/http/agent.rb', line 572 def request_log request return unless log log.info("#{request.class}: #{request.path}") request.each_header do |k, v| log.debug("request-header: #{k} => #{v}") end end |
#request_referer(request, uri, referer) ⇒ Object
Sets a Referer header. Fragment part is removed as demanded by RFC 2616 14.36, and user information part is removed just like major browsers do.
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# File 'lib/mechanize/http/agent.rb', line 585 def request_referer request, uri, referer return unless referer return if 'https'.casecmp(referer.scheme) == 0 and 'https'.casecmp(uri.scheme) != 0 if referer.fragment || referer.user || referer.password referer = referer.dup referer.fragment = referer.user = referer.password = nil end request['Referer'] = referer end |
#request_user_agent(request) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 596 def request_user_agent request request['User-Agent'] = @user_agent if @user_agent end |
#reset ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 1238 def reset @cookie_jar.clear @history.clear end |
#resolve(uri, referer = current_page) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 600 def resolve(uri, referer = current_page) referer_uri = referer && referer.uri if uri.is_a?(URI) uri = uri.dup elsif uri.nil? if referer_uri return referer_uri end raise ArgumentError, "absolute URL needed (not nil)" else url = uri.to_s.strip if url.empty? if referer_uri return referer_uri.dup.tap { |u| u.fragment = nil } end raise ArgumentError, "absolute URL needed (not #{uri.inspect})" end url.gsub!(/[^#{0.chr}-#{126.chr}]/o) { |match| Mechanize::Util.uri_escape(match) } escaped_url = Mechanize::Util.html_unescape( url.split(/((?:%[0-9A-Fa-f]{2})+|#)/).each_slice(2).map { |x, y| "#{WEBrick::HTTPUtils.escape(x)}#{y}" }.join('') ) begin uri = URI.parse(escaped_url) rescue uri = URI.parse(WEBrick::HTTPUtils.escape(escaped_url)) end end uri.host = referer_uri.host if referer_uri && URI::HTTP === uri && uri.host.nil? scheme = uri.relative? ? 'relative' : uri.scheme.downcase uri = @scheme_handlers[scheme].call(uri, referer) if referer_uri if uri.path.length == 0 && uri.relative? uri.path = referer_uri.path end end uri.path = '/' if uri.path.length == 0 if uri.relative? raise ArgumentError, "absolute URL needed (not #{uri})" unless referer_uri if referer.respond_to?(:bases) && referer.parser && (lbase = referer.bases.last) && lbase.uri && lbase.uri.absolute? base = lbase else base = nil end base = referer_uri + (base ? base.uri : referer_uri) # Workaround for URI's bug in that it squashes consecutive # slashes. See #304. if uri.path.match(%r{\A(.*?/)(?!/\.\.?(?!/))(/.*)\z}i) uri = URI((base + $1).to_s + $2) else uri = base + uri end # Strip initial "/.." bits from the path uri.path.sub!(/^(\/\.\.)+(?=\/)/, '') end unless ['http', 'https', 'file'].include?(uri.scheme.downcase) raise ArgumentError, "unsupported scheme: #{uri.scheme}" end uri end |
#resolve_parameters(uri, method, parameters) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 692 def resolve_parameters uri, method, parameters case method when :head, :get, :delete, :trace then if parameters and parameters.length > 0 uri.query ||= '' uri.query << '&' if uri.query.length > 0 uri.query << Mechanize::Util.build_query_string(parameters) end return uri, nil end return uri, parameters end |
#response_authenticate(response, page, uri, request, headers, params, referer) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 724 def response_authenticate(response, page, uri, request, headers, params, referer) www_authenticate = response['www-authenticate'] unless www_authenticate = response['www-authenticate'] then = 'WWW-Authenticate header missing in response' raise Mechanize::UnauthorizedError.new(page, nil, ) end challenges = @authenticate_parser.parse www_authenticate unless @auth_store.credentials? uri, challenges then = "no credentials found, provide some with #add_auth" raise Mechanize::UnauthorizedError.new(page, challenges, ) end if challenge = challenges.find { |c| c.scheme =~ /^Digest$/i } then realm = challenge.realm uri auth_scheme = if response['server'] =~ /Microsoft-IIS/ then :iis_digest else :digest end existing_realms = @authenticate_methods[realm.uri][auth_scheme] if existing_realms.include? realm = 'Digest authentication failed' raise Mechanize::UnauthorizedError.new(page, challenges, ) end existing_realms << realm @digest_challenges[realm] = challenge elsif challenge = challenges.find { |c| c.scheme == 'NTLM' } then existing_realms = @authenticate_methods[uri + '/'][:ntlm] if existing_realms.include?(realm) and not challenge.params then = 'NTLM authentication failed' raise Mechanize::UnauthorizedError.new(page, challenges, ) end existing_realms << realm if challenge.params then type_2 = Net::NTLM::Message.decode64 challenge.params user, password, domain = @auth_store.credentials_for uri, nil type_3 = type_2.response({ :user => user, :password => password, :domain => domain }, { :ntlmv2 => true }).encode64 headers['Authorization'] = "NTLM #{type_3}" else type_1 = Net::NTLM::Message::Type1.new.encode64 headers['Authorization'] = "NTLM #{type_1}" end elsif challenge = challenges.find { |c| c.scheme == 'Basic' } then realm = challenge.realm uri existing_realms = @authenticate_methods[realm.uri][:basic] if existing_realms.include? realm then = 'Basic authentication failed' raise Mechanize::UnauthorizedError.new(page, challenges, ) end existing_realms << realm else = 'unsupported authentication scheme' raise Mechanize::UnauthorizedError.new(page, challenges, ) end fetch uri, request.method.downcase.to_sym, headers, params, referer end |
#response_content_encoding(response, body_io) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 801 def response_content_encoding response, body_io length = response.content_length || case body_io when Tempfile, IO then body_io.stat.size else body_io.length end return body_io if length.zero? out_io = case response['Content-Encoding'] when nil, 'none', '7bit', "" then body_io when 'deflate' then content_encoding_inflate body_io when 'gzip', 'x-gzip' then content_encoding_gunzip body_io else raise Mechanize::Error, "unsupported content-encoding: #{response['Content-Encoding']}" end out_io.flush out_io.rewind out_io rescue Zlib::Error => e = "error handling content-encoding #{response['Content-Encoding']}:" << " #{e.} (#{e.class})" raise Mechanize::Error, ensure begin if Tempfile === body_io and (StringIO === out_io or (out_io and out_io.path != body_io.path)) then body_io.close! end rescue IOError # HACK ruby 1.8 raises IOError when closing the stream end end |
#response_cookies(response, uri, page) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 843 def response, uri, page if Mechanize::Page === page and page.body =~ /Set-Cookie/n page.search('//head/meta[@http-equiv="Set-Cookie"]').each do || (uri, ['content']) end end = response.get_fields 'Set-Cookie' return unless .each do || (uri, ) end end |
#response_follow_meta_refresh(response, uri, page, redirects) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 871 def response, uri, page, redirects delay, new_url = (response, uri, page) return nil unless delay new_url = new_url ? secure_resolve!(new_url, page) : uri raise Mechanize::RedirectLimitReachedError.new(page, redirects) if redirects + 1 > @redirection_limit sleep delay @history.push(page, page.uri) fetch new_url, :get, {}, [], Mechanize::Page.new, redirects + 1 end |
#response_log(response) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 885 def response_log response return unless log log.info("status: #{response.class} #{response.http_version} " \ "#{response.code} #{response.}") response.each_header do |k, v| log.debug("response-header: #{k} => #{v}") end end |
#response_parse(response, body_io, uri) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 896 def response_parse response, body_io, uri @context.parse uri, response, body_io end |
#response_read(response, request, uri) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 900 def response_read response, request, uri content_length = response.content_length if use_tempfile? content_length then body_io = make_tempfile 'mechanize-raw' else body_io = StringIO.new.set_encoding(Encoding::BINARY) end total = 0 begin response.read_body { |part| total += part.length if StringIO === body_io and use_tempfile? total then new_io = make_tempfile 'mechanize-raw' new_io.write body_io.string body_io = new_io end body_io.write(part) log.debug("Read #{part.length} bytes (#{total} total)") if log } rescue EOFError => e # terminating CRLF might be missing, let the user check the document raise unless response.chunked? and total.nonzero? body_io.rewind raise Mechanize::ChunkedTerminationError.new(e, response, body_io, uri, @context) rescue Net::HTTP::Persistent::Error, Errno::ECONNRESET => e body_io.rewind raise Mechanize::ResponseReadError.new(e, response, body_io, uri, @context) end body_io.flush body_io.rewind raise Mechanize::ResponseCodeError.new(response, uri) if Net::HTTPUnknownResponse === response content_length = response.content_length unless Net::HTTP::Head === request or Net::HTTPRedirection === response then if content_length and content_length != body_io.length err = EOFError.new("Content-Length (#{content_length}) does not " \ "match response body length (#{body_io.length})") raise Mechanize::ResponseReadError.new(err, response, body_io, uri, @context) end end body_io end |
#response_redirect(response, method, page, redirects, headers, referer = current_page) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 959 def response_redirect(response, method, page, redirects, headers, referer = current_page) case @redirect_ok when true, :all # shortcut when false, nil return page when :permanent return page unless Net::HTTPMovedPermanently === response end log.info("follow redirect to: #{response['Location']}") if log raise Mechanize::RedirectLimitReachedError.new(page, redirects) if redirects + 1 > @redirection_limit redirect_method = method == :head ? :head : :get # Make sure we are not copying over the POST headers from the original request ['Content-Length', 'Content-MD5', 'Content-Type'].each do |key| headers.delete key end new_uri = secure_resolve! response['Location'].to_s, page @history.push(page, page.uri) fetch new_uri, redirect_method, headers, [], referer, redirects + 1 end |
#retry_change_requests ⇒ Object
Retry non-idempotent requests?
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# File 'lib/mechanize/http/agent.rb', line 328 def retry_change_requests @http.retry_change_requests end |
#retry_change_requests=(retri) ⇒ Object
Retry non-idempotent requests
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# File 'lib/mechanize/http/agent.rb', line 334 def retry_change_requests= retri @http.retry_change_requests = retri end |
#robots_allowed?(uri) ⇒ Boolean
Tests if this agent is allowed to access url
, consulting the site’s robots.txt.
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# File 'lib/mechanize/http/agent.rb', line 1008 def robots_allowed? uri return true if uri.request_uri == '/robots.txt' webrobots.allowed? uri end |
#robots_disallowed?(url) ⇒ Boolean
Opposite of robots_allowed?
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# File 'lib/mechanize/http/agent.rb', line 1016 def robots_disallowed? url !robots_allowed? url end |
#robots_error(url) ⇒ Object
Returns an error object if there is an error in fetching or parsing robots.txt of the site url
.
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# File 'lib/mechanize/http/agent.rb', line 1022 def robots_error(url) webrobots.error(url) end |
#robots_error!(url) ⇒ Object
Raises the error if there is an error in fetching or parsing robots.txt of the site url
.
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# File 'lib/mechanize/http/agent.rb', line 1028 def robots_error!(url) webrobots.error!(url) end |
#robots_reset(url) ⇒ Object
Removes robots.txt cache for the site url
.
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# File 'lib/mechanize/http/agent.rb', line 1033 def robots_reset(url) webrobots.reset(url) end |
#save_cookies(uri, set_cookie) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 859 def (uri, ) return [] if .nil? if log = log() # reduce method calls @cookie_jar.parse(, uri, :logger => log) { |c| log.debug("saved cookie: #{c}") true } else @cookie_jar.parse(, uri) end end |
#secure_resolve!(uri, referer = current_page) ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 680 def secure_resolve!(uri, referer = current_page) new_uri = resolve(uri, referer) if (referer_uri = referer && referer.uri) && referer_uri.scheme != 'file'.freeze && new_uri.scheme == 'file'.freeze raise Mechanize::Error, "insecure redirect to a file URI" end new_uri end |
#set_proxy(addr, port, user = nil, pass = nil) ⇒ Object
Sets the proxy address, port, user, and password addr
should be a host, with no “http://”, port
may be a port number, service name or port number string.
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# File 'lib/mechanize/http/agent.rb', line 1197 def set_proxy addr, port, user = nil, pass = nil unless addr and port then @http.proxy = nil return end unless Integer === port then begin port = Socket.getservbyname port rescue SocketError begin port = Integer port rescue ArgumentError raise ArgumentError, "invalid value for port: #{port.inspect}" end end end proxy_uri = URI "http://#{addr}" proxy_uri.port = port proxy_uri.user = user if user proxy_uri.password = pass if pass @http.proxy = proxy_uri end |
#shutdown ⇒ Object
Closes all open connections for this agent.
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# File 'lib/mechanize/http/agent.rb', line 422 def shutdown http.shutdown end |
#ssl_version ⇒ Object
SSL version to use
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# File 'lib/mechanize/http/agent.rb', line 1097 def ssl_version @http.ssl_version end |
#ssl_version=(ssl_version) ⇒ Object
Sets the SSL version to use
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# File 'lib/mechanize/http/agent.rb', line 1102 def ssl_version= ssl_version @http.ssl_version = ssl_version end |
#use_tempfile?(size) ⇒ Boolean
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# File 'lib/mechanize/http/agent.rb', line 1231 def use_tempfile? size return false unless @max_file_buffer return false unless size size >= @max_file_buffer end |
#verify_callback ⇒ Object
A callback for additional certificate verification. See OpenSSL::SSL::SSLContext#verify_callback
The callback can be used for debugging or to ignore errors by always returning true
. Specifying nil uses the default method that was valid when the SSLContext was created
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# File 'lib/mechanize/http/agent.rb', line 1112 def verify_callback @http.verify_callback end |
#verify_callback=(verify_callback) ⇒ Object
Sets the certificate verify callback
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# File 'lib/mechanize/http/agent.rb', line 1117 def verify_callback= verify_callback @http.verify_callback = verify_callback end |
#verify_mode ⇒ Object
How to verify SSL connections. Defaults to VERIFY_PEER
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# File 'lib/mechanize/http/agent.rb', line 1122 def verify_mode @http.verify_mode end |
#verify_mode=(verify_mode) ⇒ Object
Sets the mode for verifying SSL connections
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# File 'lib/mechanize/http/agent.rb', line 1127 def verify_mode= verify_mode @http.verify_mode = verify_mode end |
#visited_page(url) ⇒ Object
Returns a visited page for the url passed in, otherwise nil
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# File 'lib/mechanize/http/agent.rb', line 371 def visited_page url @history.visited_page resolve url end |
#webrobots ⇒ Object
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# File 'lib/mechanize/http/agent.rb', line 1037 def webrobots @webrobots ||= WebRobots.new(@user_agent, :http_get => method(:get_robots)) end |