mirror of
https://github.com/zeek/zeek.git
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320b14ff09
Duplicate script `@load` directives are now detected by comparing against canonical paths formed by realpath(). This fixes the previous, unexpected behavior of treating scripts that hardlink to same inode as duplicates: such links will now be loaded as distinct scripts since their canonical path differs.
109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
// See the file "COPYING" in the main distribution directory for copyright.
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#pragma once
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#include <sys/stat.h> // for ino_t
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#include <list>
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#include <vector>
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#include <string>
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#include <optional>
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namespace iosource {
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class IOSource;
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class PktSrc;
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class PktDumper;
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}
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class Packet;
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extern void net_init(const std::optional<std::string>& interfaces,
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const std::optional<std::string>& pcap_input_file,
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const std::optional<std::string>& pcap_output_file,
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bool do_watchdog);
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extern void net_run();
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extern void net_get_final_stats();
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extern void net_finish(int drain_events);
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extern void net_delete(); // Reclaim all memory, etc.
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extern void net_update_time(double new_network_time);
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extern void net_packet_dispatch(double t, const Packet* pkt,
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iosource::PktSrc* src_ps);
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extern void expire_timers(iosource::PktSrc* src_ps = nullptr);
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extern void zeek_terminate_loop(const char* reason);
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// Functions to temporarily suspend processing of live input (network packets
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// and remote events/state). Turning this is on is sure to lead to data loss!
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extern void net_suspend_processing();
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extern void net_continue_processing();
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extern int _processing_suspended; // don't access directly.
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inline bool net_is_processing_suspended()
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{ return _processing_suspended > 0; }
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// Whether we're reading live traffic.
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extern bool reading_live;
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// Same but for reading from traces instead. We have two separate
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// variables because it's possible that neither is true, and we're
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// instead just running timers (per the variable after this one).
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extern bool reading_traces;
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// True if we have timers scheduled for the future on which we need
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// to wait. "Need to wait" here means that we're running live (though
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// perhaps not reading_live, but just running in real-time) as opposed
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// to reading a trace (in which case we don't want to wait in real-time
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// on future timers).
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extern bool have_pending_timers;
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// If > 0, we are reading from traces but trying to mimic real-time behavior.
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// (In this case, both reading_traces and reading_live are true.) The value
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// is the speedup (1 = real-time, 0.5 = half real-time, etc.).
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extern double pseudo_realtime;
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// When we started processing the current packet and corresponding event
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// queue.
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extern double processing_start_time;
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// When the Bro process was started.
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extern double bro_start_time;
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// Time at which the Bro process was started with respect to network time,
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// i.e. the timestamp of the first packet.
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extern double bro_start_network_time;
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// True if we're a in the process of cleaning-up just before termination.
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extern bool terminating;
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// True if Bro is currently parsing scripts.
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extern bool is_parsing;
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extern const Packet* current_pkt;
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extern int current_dispatched;
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extern double current_timestamp;
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extern iosource::PktSrc* current_pktsrc;
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extern iosource::IOSource* current_iosrc;
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extern iosource::PktDumper* pkt_dumper; // where to save packets
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// Script file we have already scanned (or are in the process of scanning).
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// They are identified by normalized realpath.
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struct ScannedFile {
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int include_level;
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bool skipped; // This ScannedFile was @unload'd.
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bool prefixes_checked; // If loading prefixes for this file has been tried.
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std::string name;
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std::string canonical_path; // normalized, absolute path via realpath()
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ScannedFile(int arg_include_level,
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std::string arg_name, bool arg_skipped = false,
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bool arg_prefixes_checked = false);
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/**
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* Compares the canonical path of this file against every canonical path
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* in files_scanned and returns whether there's any match.
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*/
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bool AlreadyScanned() const;
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};
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extern std::list<ScannedFile> files_scanned;
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extern std::vector<std::string> sig_files;
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