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GH-1245: require TLD of hostname literals to start with a letter

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This commit is contained in:
Jon Siwek 2020-10-23 14:17:10 -07:00
parent 06191390c3
commit fb85a19fa8
4 changed files with 16 additions and 1 deletions
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3
src/scan.l
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@ -142,6 +142,7 @@ FILE [^ \t\n]+
PREFIX [^ \t\n]+
FLOAT (({D}*"."?{D})|({D}"."?{D}*))([eE][-+]?{D})?
H [A-Za-z0-9][A-Za-z0-9\-]*
HTLD [A-Za-z][A-Za-z0-9\-]*
ESCSEQ (\\([^\n]|[0-7]+|x[[:xdigit:]]+))
%%
@ -502,7 +503,7 @@ F RET_CONST(zeek::val_mgr->False()->Ref())
"0x"{HEX}+ RET_CONST(zeek::val_mgr->Count(static_cast<bro_uint_t>(strtoull(yytext, 0, 16))).release())
{H}("."{H})+ RET_CONST(zeek::detail::dns_mgr->LookupHost(yytext).release())
({H}".")+{HTLD} RET_CONST(zeek::detail::dns_mgr->LookupHost(yytext).release())
\"([^\\\n\"]|{ESCSEQ})*\" {
const char* text = yytext;