:tocdepth: 3 base/bif/plugins/Bro_HTTP.events.bif.bro ======================================== .. bro:namespace:: GLOBAL :Namespace: GLOBAL Summary ~~~~~~~ Events ###### ==================================================== ======================================================================== :bro:id:`http_all_headers`: :bro:type:`event` Generated for HTTP headers, passing on all headers of an HTTP message at once. :bro:id:`http_begin_entity`: :bro:type:`event` Generated when starting to parse an HTTP body entity. :bro:id:`http_connection_upgrade`: :bro:type:`event` Generated when a HTTP session is upgraded to a different protocol (e.g. :bro:id:`http_content_type`: :bro:type:`event` Generated for reporting an HTTP body's content type. :bro:id:`http_end_entity`: :bro:type:`event` Generated when finishing parsing an HTTP body entity. :bro:id:`http_entity_data`: :bro:type:`event` Generated when parsing an HTTP body entity, passing on the data. :bro:id:`http_event`: :bro:type:`event` Generated for errors found when decoding HTTP requests or replies. :bro:id:`http_header`: :bro:type:`event` Generated for HTTP headers. :bro:id:`http_message_done`: :bro:type:`event` Generated once at the end of parsing an HTTP message. :bro:id:`http_reply`: :bro:type:`event` Generated for HTTP replies. :bro:id:`http_request`: :bro:type:`event` Generated for HTTP requests. :bro:id:`http_stats`: :bro:type:`event` Generated at the end of an HTTP session to report statistics about it. ==================================================== ======================================================================== Detailed Interface ~~~~~~~~~~~~~~~~~~ Events ###### .. bro:id:: http_all_headers :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`, hlist: :bro:type:`mime_header_list`) Generated for HTTP headers, passing on all headers of an HTTP message at once. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the header was sent by the originator of the TCP connection. :hlist: A *table* containing all headers extracted from the current entity. The table is indexed by the position of the header (1 for the first, 2 for the second, etc.). .. bro:see:: http_begin_entity http_content_type http_end_entity http_entity_data http_event http_header http_message_done http_reply http_request http_stats http_connection_upgrade .. note:: This event is also raised for headers found in nested body entities. .. bro:id:: http_begin_entity :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`) Generated when starting to parse an HTTP body entity. This event is generated at least once for each non-empty (client or server) HTTP body; and potentially more than once if the body contains further nested MIME entities. Bro raises this event just before it starts parsing each entity's content. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the entity was sent by the originator of the TCP connection. .. bro:see:: http_all_headers http_content_type http_end_entity http_entity_data http_event http_header http_message_done http_reply http_request http_stats mime_begin_entity http_connection_upgrade .. bro:id:: http_connection_upgrade :Type: :bro:type:`event` (c: :bro:type:`connection`, protocol: :bro:type:`string`) Generated when a HTTP session is upgraded to a different protocol (e.g. websocket). This event is raised when a server replies with a HTTP 101 reply. No more HTTP events will be raised after this event. :c: The connection. :protocol: The protocol to which the connection is switching. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_event http_header http_message_done http_reply http_request .. bro:id:: http_content_type :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`, ty: :bro:type:`string`, subty: :bro:type:`string`) Generated for reporting an HTTP body's content type. This event is generated at the end of parsing an HTTP header, passing on the MIME type as specified by the ``Content-Type`` header. If that header is missing, this event is still raised with a default value of ``text/plain``. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the entity was sent by the originator of the TCP connection. :ty: The main type. :subty: The subtype. .. bro:see:: http_all_headers http_begin_entity http_end_entity http_entity_data http_event http_header http_message_done http_reply http_request http_stats http_connection_upgrade .. note:: This event is also raised for headers found in nested body entities. .. bro:id:: http_end_entity :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`) Generated when finishing parsing an HTTP body entity. This event is generated at least once for each non-empty (client or server) HTTP body; and potentially more than once if the body contains further nested MIME entities. Bro raises this event at the point when it has finished parsing an entity's content. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the entity was sent by the originator of the TCP connection. .. bro:see:: http_all_headers http_begin_entity http_content_type http_entity_data http_event http_header http_message_done http_reply http_request http_stats mime_end_entity http_connection_upgrade .. bro:id:: http_entity_data :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`, length: :bro:type:`count`, data: :bro:type:`string`) Generated when parsing an HTTP body entity, passing on the data. This event can potentially be raised many times for each entity, each time passing a chunk of the data of not further defined size. A common idiom for using this event is to first *reassemble* the data at the scripting layer by concatenating it to a successively growing string; and only perform further content analysis once the corresponding :bro:id:`http_end_entity` event has been raised. Note, however, that doing so can be quite expensive for HTTP tranders. At the very least, one should impose an upper size limit on how much data is being buffered. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the entity was sent by the originator of the TCP connection. :length: The length of *data*. :data: One chunk of raw entity data. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_event http_header http_message_done http_reply http_request http_stats mime_entity_data http_entity_data_delivery_size skip_http_data http_connection_upgrade .. bro:id:: http_event :Type: :bro:type:`event` (c: :bro:type:`connection`, event_type: :bro:type:`string`, detail: :bro:type:`string`) Generated for errors found when decoding HTTP requests or replies. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :event_type: A string describing the general category of the problem found (e.g., ``illegal format``). :detail: Further more detailed description of the error. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_header http_message_done http_reply http_request http_stats mime_event http_connection_upgrade .. bro:id:: http_header :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`, name: :bro:type:`string`, value: :bro:type:`string`) Generated for HTTP headers. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the header was sent by the originator of the TCP connection. :name: The name of the header. :value: The value of the header. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_event http_message_done http_reply http_request http_stats http_connection_upgrade .. note:: This event is also raised for headers found in nested body entities. .. bro:id:: http_message_done :Type: :bro:type:`event` (c: :bro:type:`connection`, is_orig: :bro:type:`bool`, stat: :bro:type:`http_message_stat`) Generated once at the end of parsing an HTTP message. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. A "message" is one top-level HTTP entity, such as a complete request or reply. Each message can have further nested sub-entities inside. This event is raised once all sub-entities belonging to a top-level message have been processed (and their corresponding ``http_entity_*`` events generated). See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :is_orig: True if the entity was sent by the originator of the TCP connection. :stat: Further meta information about the message. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_event http_header http_reply http_request http_stats http_connection_upgrade .. bro:id:: http_reply :Type: :bro:type:`event` (c: :bro:type:`connection`, version: :bro:type:`string`, code: :bro:type:`count`, reason: :bro:type:`string`) Generated for HTTP replies. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. This event is generated as soon as a reply's initial line has been parsed, and before any :bro:id:`http_header` events are raised. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :version: The version number specified in the reply (e.g., ``1.1``). :code: The numerical response code returned by the server. :reason: The textual description returned by the server along with *code*. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_event http_header http_message_done http_request http_stats http_connection_upgrade .. bro:id:: http_request :Type: :bro:type:`event` (c: :bro:type:`connection`, method: :bro:type:`string`, original_URI: :bro:type:`string`, unescaped_URI: :bro:type:`string`, version: :bro:type:`string`) Generated for HTTP requests. Bro supports persistent and pipelined HTTP sessions and raises corresponding events as it parses client/server dialogues. This event is generated as soon as a request's initial line has been parsed, and before any :bro:id:`http_header` events are raised. See `Wikipedia `__ for more information about the HTTP protocol. :c: The connection. :method: The HTTP method extracted from the request (e.g., ``GET``, ``POST``). :original_URI: The unprocessed URI as specified in the request. :unescaped_URI: The URI with all percent-encodings decoded. :version: The version number specified in the request (e.g., ``1.1``). .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_event http_header http_message_done http_reply http_stats truncate_http_URI http_connection_upgrade .. bro:id:: http_stats :Type: :bro:type:`event` (c: :bro:type:`connection`, stats: :bro:type:`http_stats_rec`) Generated at the end of an HTTP session to report statistics about it. This event is raised after all of an HTTP session's requests and replies have been fully processed. :c: The connection. :stats: Statistics summarizing HTTP-level properties of the finished connection. .. bro:see:: http_all_headers http_begin_entity http_content_type http_end_entity http_entity_data http_event http_header http_message_done http_reply http_request http_connection_upgrade