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-rw-r--r--filter/config.Y44
-rw-r--r--filter/filter.c24
-rw-r--r--filter/filter.h15
3 files changed, 47 insertions, 36 deletions
diff --git a/filter/config.Y b/filter/config.Y
index 47612ee..a3eeef7 100644
--- a/filter/config.Y
+++ b/filter/config.Y
@@ -129,30 +129,30 @@ block:
;
constant:
- CONST '(' expr ')' { $$ = f_new_inst(); $$->code = 'c'; $$->arg1 = T_INT; $$->arg2 = $3; }
- | NUM { $$ = f_new_inst(); $$->code = 'c'; $$->arg1 = T_INT; $$->arg2 = $1; }
- | TRUE { $$ = f_new_inst(); $$->code = 'c'; $$->arg1 = T_BOOL; $$->arg2 = 1; }
- | FALSE { $$ = f_new_inst(); $$->code = 'c'; $$->arg1 = T_BOOL; $$->arg2 = 0; }
- | TEXT { $$ = f_new_inst(); $$->code = 'c'; $$->arg1 = T_STRING; $$->arg2 = $1; }
+ CONST '(' expr ')' { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_INT; $$->a2.i = $3; }
+ | NUM { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_INT; $$->a2.i = $1; }
+ | TRUE { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_BOOL; $$->a2.i = 1; }
+ | FALSE { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_BOOL; $$->a2.i = 0; }
+ | TEXT { $$ = f_new_inst(); $$->code = 'c'; $$->a1.i = T_STRING; $$->a2.p = $1; }
;
term:
- term '+' term { $$ = f_new_inst(); $$->code = '+'; $$->arg1 = $1; $$->arg2 = $3; }
+ term '+' term { $$ = f_new_inst(); $$->code = '+'; $$->a1.p = $1; $$->a2.p = $3; }
- | term '=' term { $$ = f_new_inst(); $$->code = '=='; $$->arg1 = $1; $$->arg2 = $3; }
- | term '!' '=' term { $$ = f_new_inst(); $$->code = '!='; $$->arg1 = $1; $$->arg2 = $4; }
- | term '<' term { $$ = f_new_inst(); $$->code = '<'; $$->arg1 = $1; $$->arg2 = $3; }
- | term '<' '=' term { $$ = f_new_inst(); $$->code = '<='; $$->arg1 = $1; $$->arg2 = $4; }
- | term '>' term { $$ = f_new_inst(); $$->code = '<'; $$->arg1 = $3; $$->arg2 = $1; }
- | term '>' '=' term { $$ = f_new_inst(); $$->code = '<='; $$->arg1 = $4; $$->arg2 = $1; }
+ | term '=' term { $$ = f_new_inst(); $$->code = '=='; $$->a1.p = $1; $$->a2.p = $3; }
+ | term '!' '=' term { $$ = f_new_inst(); $$->code = '!='; $$->a1.p = $1; $$->a2.p = $4; }
+ | term '<' term { $$ = f_new_inst(); $$->code = '<'; $$->a1.p = $1; $$->a2.p = $3; }
+ | term '<' '=' term { $$ = f_new_inst(); $$->code = '<='; $$->a1.p = $1; $$->a2.p = $4; }
+ | term '>' term { $$ = f_new_inst(); $$->code = '<'; $$->a1.p = $3; $$->a2.p = $1; }
+ | term '>' '=' term { $$ = f_new_inst(); $$->code = '<='; $$->a1.p = $4; $$->a2.p = $1; }
| SYM {
$$ = f_new_inst();
switch ($1->class) {
case SYM_VARIABLE | T_INT:
$$->code = 'i';
- $$->arg1 = T_INT;
- $$->arg2 = &($1->aux);
+ $$->a1.i = T_INT;
+ $$->a2.p = &($1->aux);
break;
default:
cf_error("Can not use this class of symbol as variable" );
@@ -173,13 +173,13 @@ ifthen:
IF term THEN block {
$$ = f_new_inst();
$$->code = '?';
- $$->arg1 = $2;
- $$->arg2 = $4;
+ $$->a1.p = $2;
+ $$->a2.p = $4;
}
;
print_one:
- term { $$ = f_new_inst(); $$->code = 'p'; $$->arg1 = $1; $$->arg2 = NULL; }
+ term { $$ = f_new_inst(); $$->code = 'p'; $$->a1.p = $1; $$->a2.p = NULL; }
;
print_list: /* EMPTY */ { $$ = NULL; }
@@ -199,8 +199,8 @@ cmd:
| ifthen ELSE block {
$$ = f_new_inst();
$$->code = '?';
- $$->arg1 = $1;
- $$->arg2 = $3;
+ $$->a1.p = $1;
+ $$->a2.p = $3;
}
| SYM '=' term ';' {
$$ = f_new_inst();
@@ -208,10 +208,10 @@ cmd:
if (($1->class & ~T_MASK) != SYM_VARIABLE)
cf_error( "You may only set variables, and this is %x.\n", $1->class );
$$->code = 's';
- $$->arg1 = $1;
- $$->arg2 = $3;
+ $$->a1.p = $1;
+ $$->a2.p = $3;
}
- | break_command print_list ';' { $$ = f_new_inst(); $$->code = 'p,'; $$->arg1 = $2; $$->arg2 = $1; }
+ | break_command print_list ';' { $$ = f_new_inst(); $$->code = 'p,'; $$->a1.p = $2; $$->a2.i = $1; }
;
CF_END
diff --git a/filter/filter.c b/filter/filter.c
index eb40d3c..4f23d1f 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -36,9 +36,9 @@ struct f_inst *startup_func = NULL;
if (x.type == T_RETURN) \
return x;
-#define ONEARG ARG(v1, arg1)
-#define TWOARGS ARG(v1, arg1) \
- ARG(v2, arg2)
+#define ONEARG ARG(v1, a1.p)
+#define TWOARGS ARG(v1, a1.p) \
+ ARG(v2, a2.p)
#define TWOARGS_C TWOARGS \
if (v1.type != v2.type) \
runtime( "Can not operate with values of incompatible types" );
@@ -113,8 +113,8 @@ interpret(struct f_inst *what)
/* Set */
case 's':
- ARG(v2, arg2);
- sym = what->arg1;
+ ARG(v2, a2.p);
+ sym = what->a1.p;
switch (res.type = v2.type) {
case T_VOID: runtime( "Can not assign void values" );
case T_INT:
@@ -126,12 +126,12 @@ interpret(struct f_inst *what)
break;
case 'c':
- res.type = (int) what->arg1;
- res.val.i = (int) what->arg2;
+ res.type = what->a1.i;
+ res.val.i = (int) what->a2.p;
break;
case 'i':
- res.type = (int) what->arg1;
- res.val.i = * ((int *) what->arg2);
+ res.type = what->a1.i;
+ res.val.i = * ((int *) what->a2.p);
break;
case 'p':
ONEARG;
@@ -147,7 +147,7 @@ interpret(struct f_inst *what)
if (v1.type != T_BOOL)
runtime( "If requires bool expression" );
if (v1.val.i) {
- ARG(res,arg2);
+ ARG(res,a2.p);
res.val.i = 0;
} else res.val.i = 1;
res.type = T_BOOL;
@@ -159,7 +159,7 @@ interpret(struct f_inst *what)
ONEARG;
printf( "\n" );
- switch ((int) what->arg2) {
+ switch (what->a2.i) {
case F_QUITBIRD:
die( "Filter asked me to die" );
case F_ACCEPT:
@@ -167,7 +167,7 @@ interpret(struct f_inst *what)
case F_ERROR:
case F_REJECT:
res.type = T_RETURN;
- res.val.i = (int) what->arg1;
+ res.val.i = what->a1.i;
break;
case F_NOP:
break;
diff --git a/filter/filter.h b/filter/filter.h
index 1294342..ffb50b3 100644
--- a/filter/filter.h
+++ b/filter/filter.h
@@ -15,9 +15,19 @@
struct f_inst { /* Instruction */
struct f_inst *next; /* Structure is 16 bytes, anyway */
int code;
- void *arg1, *arg2;
+ union {
+ int i;
+ void *p;
+ } a1;
+ union {
+ int i;
+ void *p;
+ } a2;
};
+#define arg1 a1.p
+#define arg2 a2.p
+
struct prefix {
ip_addr ip;
int len;
@@ -27,7 +37,8 @@ struct f_val {
int type;
union {
int i;
- struct prefix *px;
+ ip_addr ip;
+ struct prefix px;
char *s;
} val;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-26 19:05:29 +0200