mirror of
https://github.com/zeek/zeek.git
synced 2025-10-02 14:48:21 +00:00
Add backtrace() and print_backtrace()
This commit is contained in:
Jon Siwek
parent
76e67ff239
commit
a1c19840ce
11 changed files with 242 additions and 41 deletions
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@ -771,7 +771,7 @@ type record_field_table: table[string] of record_field;
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## Meta-information about a parameter to a function/event.
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##
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## .. zeek:see:: call_argument_vector new_event
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## .. zeek:see:: call_argument_vector new_event backtrace print_backtrace
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type call_argument: record {
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name: string; ##< The name of the parameter.
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type_name: string; ##< The name of the parameters's type.
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@ -785,9 +785,28 @@ type call_argument: record {
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## Vector type used to capture parameters of a function/event call.
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##
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## .. zeek:see:: call_argument new_event
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## .. zeek:see:: call_argument new_event backtrace print_backtrace
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type call_argument_vector: vector of call_argument;
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## A representation of an element in a Zeek script's call stack.
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##
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## .. zeek:see:: backtrace print_backtrace
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type BacktraceElement: record {
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## The name of the function being called at this point in the call stack.
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function_name: string;
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## The arguments passed to the function being called.
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function_args: call_argument_vector;
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## The file in which the function call is being made.
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file_location: string &optional;
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## The line number at which the function call is being made.
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line_location: count &optional;
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};
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## A representation of a Zeek script's call stack.
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##
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## .. zeek:see:: backtrace print_backtrace
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type Backtrace: vector of BacktraceElement;
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# todo:: Do we still need these here? Can they move into the packet filter
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# framework?
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#
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@ -7,6 +7,7 @@
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@load base/utils/site
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@load base/utils/active-http
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@load base/utils/addrs
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@load base/utils/backtrace
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@load base/utils/conn-ids
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@load base/utils/dir
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@load base/utils/directions-and-hosts
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78
scripts/base/utils/backtrace.zeek
Normal file
78
scripts/base/utils/backtrace.zeek
Normal file
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@ -0,0 +1,78 @@
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## Prints a Zeek function call stack.
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##
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## show_args: whether to print function argument names/types/values.
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##
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## one_line: whether to print the stack in a single line or multiple.
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##
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## one_line_delim: delimiter between stack elements if printing to one line.
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##
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## skip: the number of call stack elements to skip past, starting from zero,
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## with that being the call to this function.
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##
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## to_file: the file to which the call stack will be printed.
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##
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## .. zeek:see:: backtrace
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function print_backtrace(show_args: bool &default=F,
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one_line: bool &default=F,
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one_line_delim: string &default="|",
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skip: count &default=1,
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to_file: file &default=open("/dev/stdout"))
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{
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local bt = backtrace();
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local vs: vector of string = vector();
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local orig_skip = skip;
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for ( i in bt )
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{
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if ( skip > 0 )
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{
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--skip;
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next;
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}
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local bte = bt[i];
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local info = fmt("%s(", bte$function_name);
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if ( show_args )
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for ( ai in bte$function_args )
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{
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local arg = bte$function_args[ai];
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if ( ai > 0 )
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info += ", ";
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info += fmt("%s: %s", arg$name, arg$type_name);
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if ( arg?$value )
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info += fmt(" = %s", arg$value);
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}
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info += ")";
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if ( bte?$file_location )
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info += fmt(" at %s:%s", bte$file_location, bte$line_location);
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vs += fmt("#%s: %s", i - orig_skip, info);
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}
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if ( one_line )
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{
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local line = "";
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for ( vsi in vs )
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{
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line += one_line_delim + " " + vs[vsi] + " ";
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if ( vsi == |vs| - 1 )
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line += one_line_delim;
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}
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print to_file, line;
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}
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else
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{
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for ( vsi in vs )
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print to_file, vs[vsi];
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}
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}
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@ -116,33 +116,7 @@ void EventHandler::NewEvent(zeek::Args* vl)
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// new_event() is the one event we don't want to report.
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return;
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const auto& args = GetType()->Params();
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static auto call_argument_vector = zeek::id::find_type<zeek::VectorType>("call_argument_vector");
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auto vargs = zeek::make_intrusive<zeek::VectorVal>(call_argument_vector);
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for ( int i = 0; i < args->NumFields(); i++ )
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{
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const char* fname = args->FieldName(i);
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const auto& ftype = args->GetFieldType(i);
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auto fdefault = args->FieldDefault(i);
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static auto call_argument = zeek::id::find_type<zeek::RecordType>("call_argument");
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auto rec = zeek::make_intrusive<zeek::RecordVal>(call_argument);
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rec->Assign(0, zeek::make_intrusive<zeek::StringVal>(fname));
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ODesc d;
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d.SetShort();
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ftype->Describe(&d);
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rec->Assign(1, zeek::make_intrusive<zeek::StringVal>(d.Description()));
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if ( fdefault )
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rec->Assign(2, std::move(fdefault));
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if ( i < static_cast<int>(vl->size()) && (*vl)[i] )
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rec->Assign(3, (*vl)[i]);
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vargs->Assign(i, std::move(rec));
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}
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auto vargs = zeek::MakeCallArgumentVector(*vl, GetType()->Params());
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Event* ev = new Event(new_event, {
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zeek::make_intrusive<zeek::StringVal>(name),
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@ -1,5 +1,8 @@
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#include "ZeekArgs.h"
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#include "Val.h"
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#include "Type.h"
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#include "ID.h"
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#include "Desc.h"
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zeek::Args zeek::val_list_to_args(const val_list& vl)
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{
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@ -11,3 +14,37 @@ zeek::Args zeek::val_list_to_args(const val_list& vl)
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return rval;
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}
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zeek::VectorValPtr zeek::MakeCallArgumentVector(const Args& vals,
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const RecordTypePtr& types)
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{
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static auto call_argument_vector = zeek::id::find_type<zeek::VectorType>("call_argument_vector");
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auto rval = make_intrusive<VectorVal>(call_argument_vector);
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for ( int i = 0; i < types->NumFields(); i++ )
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{
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const char* fname = types->FieldName(i);
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const auto& ftype = types->GetFieldType(i);
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auto fdefault = types->FieldDefault(i);
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static auto call_argument = zeek::id::find_type<zeek::RecordType>("call_argument");
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auto rec = make_intrusive<RecordVal>(call_argument);
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rec->Assign(0, make_intrusive<StringVal>(fname));
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ODesc d;
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d.SetShort();
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ftype->Describe(&d);
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rec->Assign(1, make_intrusive<StringVal>(d.Description()));
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if ( fdefault )
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rec->Assign(2, std::move(fdefault));
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if ( i < static_cast<int>(vals.size()) && vals[i] )
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rec->Assign(3, vals[i]);
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rval->Assign(i, std::move(rec));
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}
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return rval;
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}
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@ -5,12 +5,17 @@
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#include <vector>
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#include "BroList.h"
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ZEEK_FORWARD_DECLARE_NAMESPACED(Val, zeek);
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namespace zeek {
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class VectorVal;
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class RecordType;
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template <class T> class IntrusivePtr;
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using Args = std::vector<zeek::IntrusivePtr<zeek::Val>>;
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using ValPtr = IntrusivePtr<Val>;
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using VectorValPtr = IntrusivePtr<VectorVal>;
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using RecordTypePtr = IntrusivePtr<RecordType>;
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using Args = std::vector<ValPtr>;
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/**
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* Converts a legacy-style argument list for use in modern Zeek function
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@ -22,4 +27,6 @@ using Args = std::vector<zeek::IntrusivePtr<zeek::Val>>;
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*/
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Args val_list_to_args(const val_list& vl);
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VectorValPtr MakeCallArgumentVector(const Args& vals, const RecordTypePtr& types);
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} // namespace zeek
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40
src/zeek.bif
40
src/zeek.bif
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@ -2172,6 +2172,46 @@ function is_v6_subnet%(s: subnet%): bool
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return zeek::val_mgr->False();
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%}
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## Returns a representation of the call stack as a vector of call stack
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## elements, each containing call location information.
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##
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## Returns: the call stack information, including function, file, and line
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## location information.
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function backtrace%(%): Backtrace
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%{
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using zeek::detail::call_stack;
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static auto backtrace_type = id::find_type<VectorType>("Backtrace");
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static auto elem_type = id::find_type<RecordType>("BacktraceElement");
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static auto function_name_idx = elem_type->FieldOffset("function_name");
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static auto function_args_idx = elem_type->FieldOffset("function_args");
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static auto file_location_idx = elem_type->FieldOffset("file_location");
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static auto line_location_idx = elem_type->FieldOffset("line_location");
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auto rval = make_intrusive<VectorVal>(backtrace_type);
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for ( auto it = call_stack.rbegin(); it != call_stack.rend(); ++it )
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{
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auto elem = make_intrusive<RecordVal>(elem_type);
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const auto& ci = *it;
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const auto& params = ci.func->GetType()->Params();
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auto args = MakeCallArgumentVector(ci.args, params);
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elem->Assign<StringVal>(function_name_idx, ci.func->Name());
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elem->Assign(function_args_idx, std::move(args));
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if ( ci.call )
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{
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auto loc = ci.call->GetLocationInfo();
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elem->Assign<StringVal>(file_location_idx, loc->filename);
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elem->Assign(line_location_idx, val_mgr->Count(loc->first_line));
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}
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rval->Assign(rval->Size(), std::move(elem));
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}
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return rval;
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%}
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# ===========================================================================
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#
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13
testing/btest/Baseline/bifs.backtrace/out
Normal file
13
testing/btest/Baseline/bifs.backtrace/out
Normal file
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@ -0,0 +1,13 @@
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--- Backtrace ---
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#0: print_bt() at /home/jon/pro/zeek/zeek/testing/btest/.tmp/bifs.backtrace/backtrace.zeek:26
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#1: zeek_init()
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--- Backtrace ---
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| #0: print_bt() at /home/jon/pro/zeek/zeek/testing/btest/.tmp/bifs.backtrace/backtrace.zeek:20 | #1: bar() at /home/jon/pro/zeek/zeek/testing/btest/.tmp/bifs.backtrace/backtrace.zeek:27 | #2: zeek_init() |
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--- Backtrace ---
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#0: print_bt(show_args: bool = T, one_line: bool = F) at /home/jon/pro/zeek/zeek/testing/btest/.tmp/bifs.backtrace/backtrace.zeek:15
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#1: foo(c: count = 444) at /home/jon/pro/zeek/zeek/testing/btest/.tmp/bifs.backtrace/backtrace.zeek:21
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#2: bar(a: string = asdf, b: bool = T) at /home/jon/pro/zeek/zeek/testing/btest/.tmp/bifs.backtrace/backtrace.zeek:27
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#3: zeek_init()
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@ -3,7 +3,7 @@
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#empty_field (empty)
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#unset_field -
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#path loaded_scripts
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#open 2019-10-15-01-48-24
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#open 2020-07-03-21-08-52
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#fields name
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#types string
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scripts/base/init-bare.zeek
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@ -189,6 +189,7 @@ scripts/base/init-default.zeek
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scripts/base/utils/active-http.zeek
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scripts/base/utils/exec.zeek
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scripts/base/utils/addrs.zeek
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scripts/base/utils/backtrace.zeek
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scripts/base/utils/conn-ids.zeek
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scripts/base/utils/dir.zeek
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scripts/base/frameworks/reporter/__load__.zeek
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@ -381,4 +382,4 @@ scripts/base/init-default.zeek
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scripts/base/misc/find-filtered-trace.zeek
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scripts/base/misc/version.zeek
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scripts/policy/misc/loaded-scripts.zeek
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#close 2019-10-15-01-48-25
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#close 2020-07-03-21-08-52
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@ -282,7 +282,7 @@
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0.000000 MetaHookPost CallFunction(Log::__create_stream, <frame>, (Weird::LOG, [columns=Weird::Info, ev=Weird::log_weird, path=weird])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::__create_stream, <frame>, (X509::LOG, [columns=X509::Info, ev=X509::log_x509, path=x509])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::__create_stream, <frame>, (mysql::LOG, [columns=MySQL::Info, ev=MySQL::log_mysql, path=mysql])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::__write, <frame>, (PacketFilter::LOG, [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::__write, <frame>, (PacketFilter::LOG, [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::add_default_filter, <frame>, (Broker::LOG)) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::add_default_filter, <frame>, (Cluster::LOG)) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::add_default_filter, <frame>, (Config::LOG)) -> <no result>
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@ -463,7 +463,7 @@
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0.000000 MetaHookPost CallFunction(Log::create_stream, <frame>, (Weird::LOG, [columns=Weird::Info, ev=Weird::log_weird, path=weird])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::create_stream, <frame>, (X509::LOG, [columns=X509::Info, ev=X509::log_x509, path=x509])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::create_stream, <frame>, (mysql::LOG, [columns=MySQL::Info, ev=MySQL::log_mysql, path=mysql])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::write, <frame>, (PacketFilter::LOG, [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T])) -> <no result>
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0.000000 MetaHookPost CallFunction(Log::write, <frame>, (PacketFilter::LOG, [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T])) -> <no result>
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0.000000 MetaHookPost CallFunction(NetControl::check_plugins, <frame>, ()) -> <no result>
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0.000000 MetaHookPost CallFunction(NetControl::init, <null>, ()) -> <no result>
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0.000000 MetaHookPost CallFunction(Notice::want_pp, <frame>, ()) -> <no result>
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@ -808,6 +808,7 @@
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0.000000 MetaHookPost LoadFile(0, base<...>/analyzer) -> -1
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0.000000 MetaHookPost LoadFile(0, base<...>/analyzer.bif.zeek) -> -1
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0.000000 MetaHookPost LoadFile(0, base<...>/api.zeek) -> -1
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0.000000 MetaHookPost LoadFile(0, base<...>/backtrace.zeek) -> -1
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0.000000 MetaHookPost LoadFile(0, base<...>/bif) -> -1
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0.000000 MetaHookPost LoadFile(0, base<...>/broker) -> -1
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0.000000 MetaHookPost LoadFile(0, base<...>/cluster) -> -1
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@ -1203,7 +1204,7 @@
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0.000000 MetaHookPre CallFunction(Log::__create_stream, <frame>, (Weird::LOG, [columns=Weird::Info, ev=Weird::log_weird, path=weird]))
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0.000000 MetaHookPre CallFunction(Log::__create_stream, <frame>, (X509::LOG, [columns=X509::Info, ev=X509::log_x509, path=x509]))
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0.000000 MetaHookPre CallFunction(Log::__create_stream, <frame>, (mysql::LOG, [columns=MySQL::Info, ev=MySQL::log_mysql, path=mysql]))
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0.000000 MetaHookPre CallFunction(Log::__write, <frame>, (PacketFilter::LOG, [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T]))
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0.000000 MetaHookPre CallFunction(Log::__write, <frame>, (PacketFilter::LOG, [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T]))
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0.000000 MetaHookPre CallFunction(Log::add_default_filter, <frame>, (Broker::LOG))
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0.000000 MetaHookPre CallFunction(Log::add_default_filter, <frame>, (Cluster::LOG))
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0.000000 MetaHookPre CallFunction(Log::add_default_filter, <frame>, (Config::LOG))
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@ -1384,7 +1385,7 @@
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0.000000 MetaHookPre CallFunction(Log::create_stream, <frame>, (Weird::LOG, [columns=Weird::Info, ev=Weird::log_weird, path=weird]))
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0.000000 MetaHookPre CallFunction(Log::create_stream, <frame>, (X509::LOG, [columns=X509::Info, ev=X509::log_x509, path=x509]))
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0.000000 MetaHookPre CallFunction(Log::create_stream, <frame>, (mysql::LOG, [columns=MySQL::Info, ev=MySQL::log_mysql, path=mysql]))
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0.000000 MetaHookPre CallFunction(Log::write, <frame>, (PacketFilter::LOG, [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T]))
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0.000000 MetaHookPre CallFunction(Log::write, <frame>, (PacketFilter::LOG, [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T]))
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0.000000 MetaHookPre CallFunction(NetControl::check_plugins, <frame>, ())
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0.000000 MetaHookPre CallFunction(NetControl::init, <null>, ())
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0.000000 MetaHookPre CallFunction(Notice::want_pp, <frame>, ())
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@ -1729,6 +1730,7 @@
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0.000000 MetaHookPre LoadFile(0, base<...>/analyzer)
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0.000000 MetaHookPre LoadFile(0, base<...>/analyzer.bif.zeek)
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0.000000 MetaHookPre LoadFile(0, base<...>/api.zeek)
|
||||
0.000000 MetaHookPre LoadFile(0, base<...>/backtrace.zeek)
|
||||
0.000000 MetaHookPre LoadFile(0, base<...>/bif)
|
||||
0.000000 MetaHookPre LoadFile(0, base<...>/broker)
|
||||
0.000000 MetaHookPre LoadFile(0, base<...>/cluster)
|
||||
|
|
@ -2123,7 +2125,7 @@
|
|||
0.000000 | HookCallFunction Log::__create_stream(Weird::LOG, [columns=Weird::Info, ev=Weird::log_weird, path=weird])
|
||||
0.000000 | HookCallFunction Log::__create_stream(X509::LOG, [columns=X509::Info, ev=X509::log_x509, path=x509])
|
||||
0.000000 | HookCallFunction Log::__create_stream(mysql::LOG, [columns=MySQL::Info, ev=MySQL::log_mysql, path=mysql])
|
||||
0.000000 | HookCallFunction Log::__write(PacketFilter::LOG, [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T])
|
||||
0.000000 | HookCallFunction Log::__write(PacketFilter::LOG, [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T])
|
||||
0.000000 | HookCallFunction Log::add_default_filter(Broker::LOG)
|
||||
0.000000 | HookCallFunction Log::add_default_filter(Cluster::LOG)
|
||||
0.000000 | HookCallFunction Log::add_default_filter(Config::LOG)
|
||||
|
|
@ -2304,7 +2306,7 @@
|
|||
0.000000 | HookCallFunction Log::create_stream(Weird::LOG, [columns=Weird::Info, ev=Weird::log_weird, path=weird])
|
||||
0.000000 | HookCallFunction Log::create_stream(X509::LOG, [columns=X509::Info, ev=X509::log_x509, path=x509])
|
||||
0.000000 | HookCallFunction Log::create_stream(mysql::LOG, [columns=MySQL::Info, ev=MySQL::log_mysql, path=mysql])
|
||||
0.000000 | HookCallFunction Log::write(PacketFilter::LOG, [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T])
|
||||
0.000000 | HookCallFunction Log::write(PacketFilter::LOG, [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T])
|
||||
0.000000 | HookCallFunction NetControl::check_plugins()
|
||||
0.000000 | HookCallFunction NetControl::init()
|
||||
0.000000 | HookCallFunction Notice::want_pp()
|
||||
|
|
@ -2661,6 +2663,7 @@
|
|||
0.000000 | HookLoadFile base<...>/analyzer
|
||||
0.000000 | HookLoadFile base<...>/analyzer.bif.zeek
|
||||
0.000000 | HookLoadFile base<...>/api.zeek
|
||||
0.000000 | HookLoadFile base<...>/backtrace.zeek
|
||||
0.000000 | HookLoadFile base<...>/bif
|
||||
0.000000 | HookLoadFile base<...>/broker
|
||||
0.000000 | HookLoadFile base<...>/cluster
|
||||
|
|
@ -2756,7 +2759,7 @@
|
|||
0.000000 | HookLoadFile base<...>/xmpp
|
||||
0.000000 | HookLoadFile base<...>/zeek.bif.zeek
|
||||
0.000000 | HookLogInit packet_filter 1/1 {ts (time), node (string), filter (string), init (bool), success (bool)}
|
||||
0.000000 | HookLogWrite packet_filter [ts=1591143698.178012, node=zeek, filter=ip or not ip, init=T, success=T]
|
||||
0.000000 | HookLogWrite packet_filter [ts=1593810429.768109, node=zeek, filter=ip or not ip, init=T, success=T]
|
||||
0.000000 | HookQueueEvent NetControl::init()
|
||||
0.000000 | HookQueueEvent filter_change_tracking()
|
||||
0.000000 | HookQueueEvent zeek_init()
|
||||
|
|
|
|||
28
testing/btest/bifs/backtrace.zeek
Normal file
28
testing/btest/bifs/backtrace.zeek
Normal file
|
|
@ -0,0 +1,28 @@
|
|||
# @TEST-EXEC: zeek -b %INPUT >out
|
||||
# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff out
|
||||
|
||||
@load base/utils/backtrace
|
||||
|
||||
function print_bt(show_args: bool, one_line: bool)
|
||||
{
|
||||
print "";
|
||||
print "--- Backtrace ---";
|
||||
print_backtrace(show_args, one_line, "|", 2);
|
||||
}
|
||||
|
||||
function foo(c: count)
|
||||
{
|
||||
print_bt(T, F);
|
||||
}
|
||||
|
||||
function bar(a: string, b: bool)
|
||||
{
|
||||
print_bt(F, T);
|
||||
foo(444);
|
||||
}
|
||||
|
||||
event zeek_init()
|
||||
{
|
||||
print_bt(F, F);
|
||||
bar("asdf", T);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue