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GH-710: Check that &expire_func is a function and not hook/event

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This commit is contained in:
Jon Siwek 2020-08-21 15:37:59 -07:00
parent 9f802b2a4d
commit e1a39d27f3
3 changed files with 26 additions and 0 deletions
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9
src/Attr.cc
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@ -512,10 +512,19 @@ void Attributes::CheckAttr(Attr* a)
const auto& expire_func = a->GetExpr();
if ( expire_func->GetType()->Tag() != TYPE_FUNC )
{
Error("&expire_func attribute is not a function");
break;
}
const FuncType* e_ft = expire_func->GetType()->AsFuncType();
if ( e_ft->Flavor() != FUNC_FLAVOR_FUNCTION )
{
Error("&expire_func attribute is not a function");
break;
}
if ( e_ft->Yield()->Tag() != TYPE_INTERVAL )
{
Error("&expire_func must yield a value of type interval");

3
testing/btest/Baseline/language.expire-func-type-check/output Normal file
View file

@ -0,0 +1,3 @@
error in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.expire-func-type-check/expire-func-type-check.zeek, line 12: &expire_func attribute is not a function (&expire_func=myev)
error in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.expire-func-type-check/expire-func-type-check.zeek, line 13: &expire_func attribute is not a function (&expire_func=myhk)
error in /home/jon/pro/zeek/zeek/testing/btest/.tmp/language.expire-func-type-check/expire-func-type-check.zeek, line 14: &expire_func attribute is not a function (&expire_func=foo)

14
testing/btest/language/expire-func-type-check.zeek Normal file
View file

@ -0,0 +1,14 @@
# @TEST-EXEC-FAIL: zeek -b %INPUT >output 2>&1
# @TEST-EXEC: TEST_DIFF_CANONIFIER=$SCRIPTS/diff-remove-abspath btest-diff output
event myev(t: table[string] of count)
{ }
hook myhk(t: table[string] of count)
{ }
global foo = 3;
global t: table[string] of count &expire_func=myev;
global tt: table[string] of count &expire_func=myhk;
global ttt: table[string] of count &expire_func=foo;