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GH-173: Support ranges of values for value_list elements in the signature parser

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This adds support for ranged values everywhere a value_list is used, not just for source port fields.
This commit is contained in:
Tim Wojtulewicz 2019-05-22 14:04:59 -07:00
parent 42f7be0473
commit e10f9e4047
4 changed files with 43 additions and 0 deletions
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29
src/rule-parse.y
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@ -70,6 +70,7 @@ static uint8_t ip4_mask_to_len(uint32_t mask)
%type <vallist> value_list
%type <prefix_val_list> prefix_value_list
%type <mval> TOK_IP value
%type <vallist> ranged_value
%type <prefixval> TOK_IP6 prefix_value
%type <prot> TOK_PROT
%type <ptype> TOK_PATTERN_TYPE
@ -274,6 +275,16 @@ hdr_expr:
value_list:
value_list ',' value
{ $1->append(new MaskedValue($3)); $$ = $1; }
| value_list ',' ranged_value
{
int numVals = $3->length();
for (int idx = 0; idx < numVals; idx++)
{
MaskedValue* val = $3->remove_nth(0);
$1->append(val);
}
$$ = $1;
}
| value_list ',' TOK_IDENT
{ id_to_maskedvallist($3, $1); $$ = $1; }
| value
@ -281,6 +292,10 @@ value_list:
$$ = new maskedvalue_list();
$$->append(new MaskedValue($1));
}
| ranged_value
{
$$ = $1;
}
| TOK_IDENT
{
$$ = new maskedvalue_list();
@ -320,6 +335,20 @@ prefix_value:
| TOK_IP6
;
ranged_value:
TOK_INT '-' TOK_INT
{
$$ = new maskedvalue_list();
for (int val = $1; val <= $3; val++)
{
MaskedValue* masked = new MaskedValue();
masked->val = val;
masked->mask = 0xffffffff;
$$->append(masked);
}
}
;
value:
TOK_INT
{ $$.val = $1; $$.mask = 0xffffffff; }