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Filter: Pre-evaluation of constant expressions

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This commit is contained in:
Maria Matejka 2019-07-02 10:45:53 +02:00
parent 30667d5041
commit b40c0f028f
8 changed files with 165 additions and 96 deletions
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1
conf/cf-lex.l
View File

@ -757,6 +757,7 @@ cf_pop_scope(void)
{ {
conf_this_scope->active = 0; conf_this_scope->active = 0;
conf_this_scope = conf_this_scope->next; conf_this_scope = conf_this_scope->next;
ASSERT(conf_this_scope); ASSERT(conf_this_scope);
} }

3
filter/Makefile
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@ -3,7 +3,8 @@ obj := $(src-o-files)
$(all-daemon) $(all-daemon)
$(cf-local) $(cf-local)
M4FLAGS_FILTERS=$(filter-out -s,$(M4FLAGS)) #M4FLAGS_FILTERS=$(filter-out -s,$(M4FLAGS))
M4FLAGS_FILTERS=$(M4FLAGS)
$(o)inst-gen.h: $(s)decl.m4 $(s)f-inst.c $(objdir)/.dir-stamp $(o)inst-gen.h: $(s)decl.m4 $(s)f-inst.c $(objdir)/.dir-stamp
$(M4) $(M4FLAGS_FILTERS) -DTARGET=H -P $^ >$@ $(M4) $(M4FLAGS_FILTERS) -DTARGET=H -P $^ >$@

9
filter/data.c
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@ -514,6 +514,15 @@ val_format(const struct f_val *v, buffer *buf)
} }
} }
char *
val_format_str(struct linpool *lp, const struct f_val *v) {
buffer b;
LOG_BUFFER_INIT(b);
val_format(v, &b);
return lp_strdup(lp, b.start);
}
static char val_dump_buffer[1024]; static char val_dump_buffer[1024];
const char * const char *
val_dump(const struct f_val *v) { val_dump(const struct f_val *v) {

3
filter/data.h
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@ -119,7 +119,7 @@ enum f_lval_type {
struct f_lval { struct f_lval {
enum f_lval_type type; enum f_lval_type type;
union { union {
const struct symbol *sym; struct symbol *sym;
struct f_dynamic_attr da; struct f_dynamic_attr da;
struct f_static_attr sa; struct f_static_attr sa;
}; };
@ -169,6 +169,7 @@ void trie_format(const struct f_trie *t, buffer *buf);
int val_same(const struct f_val *v1, const struct f_val *v2); int val_same(const struct f_val *v1, const struct f_val *v2);
int val_compare(const struct f_val *v1, const struct f_val *v2); int val_compare(const struct f_val *v1, const struct f_val *v2);
void val_format(const struct f_val *v, buffer *buf); void val_format(const struct f_val *v, buffer *buf);
char *val_format_str(struct linpool *lp, const struct f_val *v);
const char *val_dump(const struct f_val *v); const char *val_dump(const struct f_val *v);
static inline int val_is_ip4(const struct f_val *v) static inline int val_is_ip4(const struct f_val *v)

109
filter/decl.m4
View File

@ -53,7 +53,12 @@ m4_define(FID_LINE_IN, `m4_divert(107)')
m4_define(FID_INTERPRET_BODY, `m4_divert(108)') m4_define(FID_INTERPRET_BODY, `m4_divert(108)')
m4_define(FID_ALL, `FID_INTERPRET_BODY'); m4_define(FID_ALL, `FID_INTERPRET_BODY');
m4_define(FID_HIC, `m4_ifelse(TARGET, [[H]], $1, TARGET, [[I]], $2, TARGET, [[C]], $3)') m4_define(FID_HIC, `m4_ifelse(TARGET, [[H]], [[$1]], TARGET, [[I]], [[$2]], TARGET, [[C]], [[$3]])')
m4_define(FID_INTERPRET_EXEC, `FID_HIC(,[[FID_INTERPRET_BODY()]],[[m4_divert(-1)]])')
m4_define(FID_INTERPRET_NEW, `FID_HIC(,[[m4_divert(-1)]],[[FID_INTERPRET_BODY()]])')
m4_define(NEVER_CONSTANT, `m4_define([[INST_NEVER_CONSTANT]])')
m4_define(FID_IFCONST, `m4_ifdef([[INST_NEVER_CONSTANT]],[[$2]],[[$1]])')
m4_define(INST_FLUSH, `m4_ifdef([[INST_NAME]], [[ m4_define(INST_FLUSH, `m4_ifdef([[INST_NAME]], [[
FID_ENUM FID_ENUM
@ -72,26 +77,29 @@ FID_NEW
FID_HIC( FID_HIC(
[[ [[
struct f_inst *f_new_inst_]]INST_NAME()[[(enum f_instruction_code fi_code struct f_inst *f_new_inst_]]INST_NAME()[[(enum f_instruction_code fi_code
[[m4_undivert(102)]] m4_undivert(102)
);]], );]],
[[ [[
case INST_NAME(): case INST_NAME():
#define whati (&(what->i_]]INST_NAME()[[)) #define whati (&(what->i_]]INST_NAME()[[))
m4_ifelse(m4_eval(INST_INVAL() > 0), 1, [[if (fstk->vcnt < INST_INVAL()) runtime("Stack underflow"); fstk->vcnt -= INST_INVAL(); ]]) m4_ifelse(m4_eval(INST_INVAL() > 0), 1, [[if (fstk->vcnt < INST_INVAL()) runtime("Stack underflow"); fstk->vcnt -= INST_INVAL(); ]])
[[m4_undivert(108)]] m4_undivert(108)
#undef whati #undef whati
break; break;
]], ]],
[[ [[
struct f_inst *f_new_inst_]]INST_NAME()[[(enum f_instruction_code fi_code struct f_inst *f_new_inst_]]INST_NAME()[[(enum f_instruction_code fi_code
[[m4_undivert(102)]] m4_undivert(102)
) )
{ {
struct f_inst *what = fi_new(fi_code); struct f_inst *what = fi_new(fi_code);
FID_IFCONST([[uint constargs = 1;]])
#define whati (&(what->i_]]INST_NAME()[[)) #define whati (&(what->i_]]INST_NAME()[[))
[[m4_undivert(103)]] m4_undivert(103)
FID_IFCONST([[if (!constargs)]])
return what;
FID_IFCONST([[m4_undivert(108)]])
#undef whati #undef whati
return what;
} }
]]) ]])
@ -130,13 +138,14 @@ m4_undivert(106)
#undef f1 #undef f1
#undef f2 #undef f2
break; break;
m4_divert(-1)FID_FLUSH(101,200)
]])') ]])')
m4_define(INST, `m4_dnl m4_define(INST, `m4_dnl
INST_FLUSH()m4_dnl INST_FLUSH()m4_dnl
m4_define([[INST_NAME]], [[$1]])m4_dnl m4_define([[INST_NAME]], [[$1]])m4_dnl
m4_define([[INST_INVAL]], [[$2]])m4_dnl m4_define([[INST_INVAL]], [[$2]])m4_dnl
m4_undefine([[INST_NEVER_CONSTANT]])m4_dnl
FID_ALL() m4_dnl FID_ALL() m4_dnl
') ')
@ -149,22 +158,18 @@ FID_NEW_ARGS
, $1 $2 , $1 $2
FID_NEW_BODY FID_NEW_BODY
whati->$2 = $2; whati->$2 = $2;
m4_ifelse($3,,,[[
FID_LINEARIZE_BODY FID_LINEARIZE_BODY
item->$3 = whati->$2; item->$2 = whati->$2;
m4_ifelse($3,,,[[
FID_SAME_BODY
if ($3) return 0;
]]) ]])
m4_ifelse($4,,,[[ m4_ifelse($4,,,[[
FID_SAME_BODY
if ($4) return 0;
]])
m4_ifelse($5,,,[[
FID_DUMP_BODY FID_DUMP_BODY
debug("%s$5\n", INDENT, $6); debug("%s$4\n", INDENT, $5);
]])
m4_ifelse($7,,,[[
FID_INTERPRET_BODY
$7
]]) ]])
FID_INTERPRET_EXEC
const $1 $2 = whati->$2
FID_ALL') FID_ALL')
m4_define(ARG_ANY, ` m4_define(ARG_ANY, `
@ -174,34 +179,39 @@ FID_NEW_ARGS
, struct f_inst * f$1 , struct f_inst * f$1
FID_NEW_BODY FID_NEW_BODY
whati->f$1 = f$1; whati->f$1 = f$1;
for (const struct f_inst *child = f$1; child; child = child->next) what->size += child->size; for (const struct f_inst *child = f$1; child; child = child->next) {
what->size += child->size;
FID_IFCONST([[
if (child->fi_code != FI_CONSTANT)
constargs = 0;
]])
}
FID_LINEARIZE_BODY FID_LINEARIZE_BODY
pos = linearize(dest, whati->f$1, pos);m4_dnl pos = linearize(dest, whati->f$1, pos);
FID_ALL()') FID_ALL()')
m4_define(ARG, `ARG_ANY($1) m4_define(ARG, `ARG_ANY($1)
FID_INTERPRET_BODY FID_INTERPRET_EXEC()
if (v$1.type != $2) runtime("Argument $1 of instruction %s must be of type $2, got 0x%02x", f_instruction_name(what->fi_code), v$1.type)m4_dnl if (v$1.type != $2) runtime("Argument $1 of instruction %s must be of type $2, got 0x%02x", f_instruction_name(what->fi_code), v$1.type)m4_dnl
FID_ALL()') FID_ALL()')
m4_define(LINEX, `FID_INTERPRET_BODY m4_define(LINEX, `FID_INTERPRET_EXEC()LINEX_($1)FID_INTERPRET_NEW()return $1 FID_ALL()')
do { m4_define(LINEX_, `do {
fstk->estk[fstk->ecnt].pos = 0; fstk->estk[fstk->ecnt].pos = 0;
fstk->estk[fstk->ecnt].line = $1; fstk->estk[fstk->ecnt].line = $1;
fstk->estk[fstk->ecnt].ventry = fstk->vcnt; fstk->estk[fstk->ecnt].ventry = fstk->vcnt;
fstk->estk[fstk->ecnt].vbase = fstk->estk[fstk->ecnt-1].vbase; fstk->estk[fstk->ecnt].vbase = fstk->estk[fstk->ecnt-1].vbase;
fstk->estk[fstk->ecnt].emask = 0; fstk->estk[fstk->ecnt].emask = 0;
fstk->ecnt++; fstk->ecnt++;
} while (0)m4_dnl } while (0)')
FID_ALL()')
m4_define(LINE, ` m4_define(LINE, `
FID_LINE_IN FID_LINE_IN
const struct f_line * fl$1; const struct f_line * fl$1;
FID_STRUCT_IN FID_STRUCT_IN
const struct f_inst * f$1; struct f_inst * f$1;
FID_NEW_ARGS FID_NEW_ARGS
, const struct f_inst * f$1 , struct f_inst * f$1
FID_NEW_BODY FID_NEW_BODY
whati->f$1 = f$1; whati->f$1 = f$1;
FID_DUMP_BODY FID_DUMP_BODY
@ -210,23 +220,25 @@ FID_LINEARIZE_BODY
item->fl$1 = f_linearize(whati->f$1); item->fl$1 = f_linearize(whati->f$1);
FID_SAME_BODY FID_SAME_BODY
if (!f_same(f1->fl$1, f2->fl$1)) return 0; if (!f_same(f1->fl$1, f2->fl$1)) return 0;
FID_INTERPRET_BODY FID_INTERPRET_EXEC
do { if (whati->fl$1) { do { if (whati->fl$1) {
LINEX(whati->fl$1); LINEX_(whati->fl$1);
} } while(0)m4_dnl } } while(0)
FID_INTERPRET_NEW
return whati->f$1
FID_ALL()') FID_ALL()')
m4_define(RESULT, `RESULT_VAL([[ (struct f_val) { .type = $1, .val.$2 = $3 } ]])') m4_define(RESULT, `RESULT_VAL([[ (struct f_val) { .type = $1, .val.$2 = $3 } ]])')
m4_define(RESULT_VAL, `FID_INTERPRET_BODY()do { res = $1; fstk->vcnt++; } while (0)FID_ALL()') m4_define(RESULT_VAL, `FID_HIC(, [[do { res = $1; fstk->vcnt++; } while (0)]],
[[return fi_constant(what, $1)]])')
m4_define(RESULT_VOID, `RESULT_VAL([[ (struct f_val) { .type = T_VOID } ]])') m4_define(RESULT_VOID, `RESULT_VAL([[ (struct f_val) { .type = T_VOID } ]])')
m4_define(SYMBOL, `FID_MEMBER(const struct symbol *, sym, sym, m4_define(SYMBOL, `FID_MEMBER(struct symbol *, sym,
[[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], symbol %s, item->sym->name, const struct symbol *sym = whati->sym)') [[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], symbol %s, item->sym->name)')
m4_define(FRET, `') m4_define(RTC, `FID_MEMBER(struct rtable_config *, rtc, [[strcmp(f1->rtc->name, f2->rtc->name)]], route table %s, item->rtc->name)')
m4_define(ECS, `FID_MEMBER(enum ec_subtype, ecs, ecs, f1->ecs != f2->ecs, ec subtype %s, ec_subtype_str(item->ecs), enum ec_subtype ecs = whati->ecs)') m4_define(STATIC_ATTR, `FID_MEMBER(struct f_static_attr, sa, f1->sa.sa_code != f2->sa.sa_code,,)')
m4_define(RTC, `FID_MEMBER(const struct rtable_config *, rtc, rtc, [[strcmp(f1->rtc->name, f2->rtc->name)]], route table %s, item->rtc->name, struct rtable *table = whati->rtc->table)') m4_define(DYNAMIC_ATTR, `FID_MEMBER(struct f_dynamic_attr, da, f1->da.ea_code != f2->da.ea_code,,)')
m4_define(STATIC_ATTR, `FID_MEMBER(struct f_static_attr, sa, sa, f1->sa.sa_code != f2->sa.sa_code,,, struct f_static_attr sa = whati->sa)') m4_define(ACCESS_RTE, `NEVER_CONSTANT()')
m4_define(DYNAMIC_ATTR, `FID_MEMBER(struct f_dynamic_attr, da, da, f1->da.ea_code != f2->da.ea_code,,, struct f_dynamic_attr da = whati->da)')
m4_define(FID_WR_PUT_LIST) m4_define(FID_WR_PUT_LIST)
m4_define(FID_WR_PUT_ALSO, `m4_define([[FID_WR_PUT_LIST]],FID_WR_PUT_LIST()[[FID_WR_DPUT(]]FID_WR_DIDX[[)FID_WR_DPUT(]]$1[[)]])m4_define([[FID_WR_DIDX]],m4_eval(FID_WR_DIDX+1))m4_divert(FID_WR_DIDX)') m4_define(FID_WR_PUT_ALSO, `m4_define([[FID_WR_PUT_LIST]],FID_WR_PUT_LIST()[[FID_WR_DPUT(]]FID_WR_DIDX[[)FID_WR_DPUT(]]$1[[)]])m4_define([[FID_WR_DIDX]],m4_eval(FID_WR_DIDX+1))m4_divert(FID_WR_DIDX)')
@ -267,8 +279,25 @@ fi_new(enum f_instruction_code fi_code)
return what; return what;
} }
static inline struct f_inst *
fi_constant(struct f_inst *what, struct f_val val)
{
what->fi_code = FI_CONSTANT;
what->i_FI_CONSTANT.val = val;
return what;
}
#define v1 whati->f1->i_FI_CONSTANT.val
#define v2 whati->f2->i_FI_CONSTANT.val
#define v3 whati->f3->i_FI_CONSTANT.val
#define runtime(fmt, ...) cf_error("filter preevaluation, line %d: " fmt, ifs->lino, ##__VA_ARGS__)
#define fpool cfg_mem
#define falloc(size) cfg_alloc(size)
/* Instruction constructors */ /* Instruction constructors */
FID_WR_PUT(3) FID_WR_PUT(3)
#undef v1
#undef v2
#undef v3
/* Line dumpers */ /* Line dumpers */
#define INDENT (((const char *) f_dump_line_indent_str) + sizeof(f_dump_line_indent_str) - (indent) - 1) #define INDENT (((const char *) f_dump_line_indent_str) + sizeof(f_dump_line_indent_str) - (indent) - 1)
@ -387,9 +416,9 @@ FID_WR_PUT(3)
m4_divert(-1) m4_divert(-1)
m4_changequote(`,') m4_changequote(`,')
m4_define(FID_CLEANUP, `m4_ifelse($1,$2,,[[m4_undivert($1)FID_CLEANUP(m4_eval($1+1),$2)]])') m4_define(FID_FLUSH, `m4_ifelse($1,$2,,[[m4_undivert($1)FID_FLUSH(m4_eval($1+1),$2)]])')
m4_define(FID_WR_DPUT, `m4_undivert($1)') m4_define(FID_WR_DPUT, `m4_undivert($1)')
m4_m4wrap(`INST_FLUSH()m4_divert(0)FID_WR_PUT_LIST()m4_divert(-1)FID_CLEANUP(1,200)') m4_m4wrap(`INST_FLUSH()m4_divert(0)FID_WR_PUT_LIST()m4_divert(-1)FID_FLUSH(1,200)')
m4_changequote([[,]]) m4_changequote([[,]])

113
filter/f-inst.c
View File

@ -37,12 +37,10 @@
* *
* m4_dnl FID_MEMBER( custom instruction member * m4_dnl FID_MEMBER( custom instruction member
* m4_dnl C type, for storage in structs * m4_dnl C type, for storage in structs
* m4_dnl name in f_inst, how the member is named before linearization * m4_dnl name, how the member is named
* m4_dnl name in f_line_item, how the member is named afterwards
* m4_dnl comparator for same(), if different, this should be TRUE (CAVEAT) * m4_dnl comparator for same(), if different, this should be TRUE (CAVEAT)
* m4_dnl dump format string debug -> format string for bvsnprintf * m4_dnl dump format string debug -> format string for bvsnprintf
* m4_dnl dump format args appropriate args * m4_dnl dump format args appropriate args
* m4_dnl interpreter body how to deal with this on execution
* m4_dnl ) * m4_dnl )
* *
* m4_dnl RESULT(type, union-field, value); putting this on value stack * m4_dnl RESULT(type, union-field, value); putting this on value stack
@ -106,7 +104,7 @@
ARG_ANY(1); ARG_ANY(1);
ARG(2, T_INT); ARG(2, T_INT);
FID_MEMBER(enum ec_subtype, ecs, ecs, f1->ecs != f2->ecs, ec subtype %s, ec_subtype_str(item->ecs), enum ec_subtype ecs = whati->ecs); FID_MEMBER(enum ec_subtype, ecs, f1->ecs != f2->ecs, ec subtype %s, ec_subtype_str(item->ecs));
int check, ipv4_used; int check, ipv4_used;
u32 key, val; u32 key, val;
@ -152,24 +150,37 @@
INST(FI_PATHMASK_CONSTRUCT, 0, 1) { INST(FI_PATHMASK_CONSTRUCT, 0, 1) {
ARG_ANY(1); ARG_ANY(1);
FID_MEMBER(uint, count, count, f1->count != f2->count, number of items %u, item->count); FID_MEMBER(uint, count, f1->count != f2->count, number of items %u, item->count);
FID_NEW_BODY FID_NEW_BODY
uint len = 0; uint len = 0;
uint dyn = 0; for (const struct f_inst *tt = f1; tt; tt = tt->next, len++);
for (const struct f_inst *tt = f1; tt; tt = tt->next, len++)
if (tt->fi_code != FI_CONSTANT)
dyn++;
whati->count = len; whati->count = len;
struct f_inst **items;
if (constargs) {
items = alloca(len * sizeof(struct f_inst *));
for (uint i=0; f1; i++) {
items[i] = f1;
f1 = f1->next;
items[i]->next = 0;
}
whati->f1 = NULL;
}
FID_ALL FID_ALL
FID_INTERPRET_EXEC
if (fstk->vcnt < whati->count) /* TODO: make this check systematic */ if (fstk->vcnt < whati->count) /* TODO: make this check systematic */
runtime("Construction of BGP path mask from %u elements must have at least that number of elements", whati->count); runtime("Construction of BGP path mask from %u elements must have at least that number of elements", whati->count);
struct f_path_mask *pm = lp_alloc(fs->pool, sizeof(struct f_path_mask) + whati->count * sizeof(struct f_path_mask_item)); #define pv fstk->vstk[fstk->vcnt - count + i]
FID_INTERPRET_NEW
#define pv items[i]->i_FI_CONSTANT.val
FID_INTERPRET_BODY
struct f_path_mask *pm = falloc(sizeof(struct f_path_mask) + whati->count * sizeof(struct f_path_mask_item));
for (uint i=0; i<whati->count; i++) { for (uint i=0; i<whati->count; i++) {
#define pv fstk->vstk[fstk->vcnt - whati->count + i]
switch (pv.type) { switch (pv.type) {
case T_PATH_MASK_ITEM: case T_PATH_MASK_ITEM:
pm->item[i] = pv.val.pmi; pm->item[i] = pv.val.pmi;
@ -185,9 +196,11 @@
} }
} }
fstk->vcnt -= whati->count; FID_INTERPRET_EXEC
pm->len = whati->count; fstk->vcnt -= whati->count;
FID_ALL
pm->len = whati->count;
RESULT(T_PATH_MASK, path_mask, pm); RESULT(T_PATH_MASK, path_mask, pm);
} }
@ -270,8 +283,10 @@
/* Set to indirect value prepared in v1 */ /* Set to indirect value prepared in v1 */
INST(FI_VAR_SET, 1, 0) { INST(FI_VAR_SET, 1, 0) {
NEVER_CONSTANT;
ARG_ANY(1); ARG_ANY(1);
SYMBOL; SYMBOL;
if ((sym->class != (SYM_VARIABLE | v1.type)) && (v1.type != T_VOID)) if ((sym->class != (SYM_VARIABLE | v1.type)) && (v1.type != T_VOID))
{ {
/* IP->Quad implicit conversion */ /* IP->Quad implicit conversion */
@ -289,6 +304,7 @@
INST(FI_VAR_GET, 0, 1) { INST(FI_VAR_GET, 0, 1) {
SYMBOL; SYMBOL;
NEVER_CONSTANT;
RESULT_VAL(fstk->vstk[curline.vbase + sym->offset]); RESULT_VAL(fstk->vstk[curline.vbase + sym->offset]);
} }
@ -297,26 +313,27 @@
FID_MEMBER( FID_MEMBER(
struct f_val, struct f_val,
val, val,
val,
[[ !val_same(&(f1->val), &(f2->val)) ]], [[ !val_same(&(f1->val), &(f2->val)) ]],
value %s, value %s,
val_dump(&(item->val)) val_dump(&(item->val))
); );
RESULT_VAL(whati->val); RESULT_VAL(val);
} }
INST(FI_PRINT, 1, 0) { INST(FI_PRINT, 1, 0) {
NEVER_CONSTANT;
ARG_ANY(1); ARG_ANY(1);
val_format(&(v1), &fs->buf); val_format(&(v1), &fs->buf);
} }
INST(FI_CONDITION, 1, 0) { INST(FI_CONDITION, 1, 0) {
ARG(1, T_BOOL); ARG(1, T_BOOL);
if (res.val.i) if (v1.val.i)
LINE(2,0); LINE(2,0);
else else
LINE(3,1); LINE(3,1);
} }
INST(FI_PRINT_AND_DIE, 0, 0) { INST(FI_PRINT_AND_DIE, 0, 0) {
NEVER_CONSTANT;
FID_LINEARIZE_BODY FID_LINEARIZE_BODY
{ {
uint opos = pos; uint opos = pos;
@ -330,7 +347,7 @@
} }
FID_ALL FID_ALL
FID_MEMBER(enum filter_return, fret, fret, f1->fret != f2->fret, %s, filter_return_str(item->fret), enum filter_return fret = whati->fret); FID_MEMBER(enum filter_return, fret, f1->fret != f2->fret, %s, filter_return_str(item->fret));
if ((fret == F_NOP || (fret != F_NONL && (what->flags & FIF_PRINTED))) && if ((fret == F_NOP || (fret != F_NONL && (what->flags & FIF_PRINTED))) &&
!(fs->flags & FF_SILENT)) !(fs->flags & FF_SILENT))
@ -663,7 +680,7 @@
runtime( "SADR expected" ); runtime( "SADR expected" );
net_addr_ip6_sadr *net = (void *) v1.val.net; net_addr_ip6_sadr *net = (void *) v1.val.net;
net_addr *src = lp_alloc(fs->pool, sizeof(net_addr_ip6)); net_addr *src = falloc(sizeof(net_addr_ip6));
net_fill_ip6(src, net->src_prefix, net->src_pxlen); net_fill_ip6(src, net->src_prefix, net->src_pxlen);
RESULT(T_NET, net, src); RESULT(T_NET, net, src);
@ -721,6 +738,7 @@
} }
INST(FI_RETURN, 1, 1) { INST(FI_RETURN, 1, 1) {
NEVER_CONSTANT;
/* Acquire the return value */ /* Acquire the return value */
ARG_ANY(1); ARG_ANY(1);
uint retpos = fstk->vcnt; uint retpos = fstk->vcnt;
@ -748,6 +766,7 @@
} }
INST(FI_CALL, 0, 1) { INST(FI_CALL, 0, 1) {
NEVER_CONSTANT;
SYMBOL; SYMBOL;
/* Push the body on stack */ /* Push the body on stack */
@ -768,13 +787,14 @@
} }
INST(FI_DROP_RESULT, 1, 0) { INST(FI_DROP_RESULT, 1, 0) {
NEVER_CONSTANT;
ARG_ANY(1); ARG_ANY(1);
} }
INST(FI_SWITCH, 1, 0) { INST(FI_SWITCH, 1, 0) {
ARG_ANY(1); ARG_ANY(1);
FID_MEMBER(const struct f_tree *, tree, tree, [[!same_tree(f1->tree, f2->tree)]], tree %p, item->tree, const struct f_tree *tree = whati->tree); FID_MEMBER(struct f_tree *, tree, [[!same_tree(f1->tree, f2->tree)]], tree %p, item->tree);
const struct f_tree *t = find_tree(tree, &v1); const struct f_tree *t = find_tree(tree, &v1);
if (!t) { if (!t) {
@ -782,7 +802,7 @@
t = find_tree(tree, &v1); t = find_tree(tree, &v1);
if (!t) { if (!t) {
debug( "No else statement?\n"); debug( "No else statement?\n");
break; FID_HIC(,break,return NULL);
} }
} }
/* It is actually possible to have t->data NULL */ /* It is actually possible to have t->data NULL */
@ -801,7 +821,7 @@
INST(FI_PATH_PREPEND, 2, 1) { /* Path prepend */ INST(FI_PATH_PREPEND, 2, 1) { /* Path prepend */
ARG(1, T_PATH); ARG(1, T_PATH);
ARG(2, T_INT); ARG(2, T_INT);
RESULT(T_PATH, ad, [[ as_path_prepend(fs->pool, v1.val.ad, v2.val.i) ]]); RESULT(T_PATH, ad, [[ as_path_prepend(fpool, v1.val.ad, v2.val.i) ]]);
} }
INST(FI_CLIST_ADD, 2, 1) { /* (Extended) Community list add */ INST(FI_CLIST_ADD, 2, 1) { /* (Extended) Community list add */
@ -816,14 +836,14 @@
struct f_val dummy; struct f_val dummy;
if ((v2.type == T_PAIR) || (v2.type == T_QUAD)) if ((v2.type == T_PAIR) || (v2.type == T_QUAD))
RESULT(T_CLIST, ad, [[ int_set_add(fs->pool, v1.val.ad, v2.val.i) ]]); RESULT(T_CLIST, ad, [[ int_set_add(fpool, v1.val.ad, v2.val.i) ]]);
/* IP->Quad implicit conversion */ /* IP->Quad implicit conversion */
else if (val_is_ip4(&v2)) else if (val_is_ip4(&v2))
RESULT(T_CLIST, ad, [[ int_set_add(fs->pool, v1.val.ad, ipa_to_u32(v2.val.ip)) ]]); RESULT(T_CLIST, ad, [[ int_set_add(fpool, v1.val.ad, ipa_to_u32(v2.val.ip)) ]]);
else if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy)) else if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy))
runtime("Can't add set"); runtime("Can't add set");
else if (v2.type == T_CLIST) else if (v2.type == T_CLIST)
RESULT(T_CLIST, ad, [[ int_set_union(fs->pool, v1.val.ad, v2.val.ad) ]]); RESULT(T_CLIST, ad, [[ int_set_union(fpool, v1.val.ad, v2.val.ad) ]]);
else else
runtime("Can't add non-pair"); runtime("Can't add non-pair");
} }
@ -834,11 +854,11 @@
if ((v2.type == T_SET) && eclist_set_type(v2.val.t)) if ((v2.type == T_SET) && eclist_set_type(v2.val.t))
runtime("Can't add set"); runtime("Can't add set");
else if (v2.type == T_ECLIST) else if (v2.type == T_ECLIST)
RESULT(T_ECLIST, ad, [[ ec_set_union(fs->pool, v1.val.ad, v2.val.ad) ]]); RESULT(T_ECLIST, ad, [[ ec_set_union(fpool, v1.val.ad, v2.val.ad) ]]);
else if (v2.type != T_EC) else if (v2.type != T_EC)
runtime("Can't add non-ec"); runtime("Can't add non-ec");
else else
RESULT(T_ECLIST, ad, [[ ec_set_add(fs->pool, v1.val.ad, v2.val.ec) ]]); RESULT(T_ECLIST, ad, [[ ec_set_add(fpool, v1.val.ad, v2.val.ec) ]]);
} }
else if (v1.type == T_LCLIST) else if (v1.type == T_LCLIST)
@ -847,11 +867,11 @@
if ((v2.type == T_SET) && lclist_set_type(v2.val.t)) if ((v2.type == T_SET) && lclist_set_type(v2.val.t))
runtime("Can't add set"); runtime("Can't add set");
else if (v2.type == T_LCLIST) else if (v2.type == T_LCLIST)
RESULT(T_LCLIST, ad, [[ lc_set_union(fs->pool, v1.val.ad, v2.val.ad) ]]); RESULT(T_LCLIST, ad, [[ lc_set_union(fpool, v1.val.ad, v2.val.ad) ]]);
else if (v2.type != T_LC) else if (v2.type != T_LC)
runtime("Can't add non-lc"); runtime("Can't add non-lc");
else else
RESULT(T_LCLIST, ad, [[ lc_set_add(fs->pool, v1.val.ad, v2.val.lc) ]]); RESULT(T_LCLIST, ad, [[ lc_set_add(fpool, v1.val.ad, v2.val.lc) ]]);
} }
@ -874,7 +894,7 @@
else else
runtime("Can't delete non-integer (set)"); runtime("Can't delete non-integer (set)");
RESULT(T_PATH, ad, [[ as_path_filter(fs->pool, v1.val.ad, set, key, 0) ]]); RESULT(T_PATH, ad, [[ as_path_filter(fpool, v1.val.ad, set, key, 0) ]]);
} }
else if (v1.type == T_CLIST) else if (v1.type == T_CLIST)
@ -883,12 +903,12 @@
struct f_val dummy; struct f_val dummy;
if ((v2.type == T_PAIR) || (v2.type == T_QUAD)) if ((v2.type == T_PAIR) || (v2.type == T_QUAD))
RESULT(T_CLIST, ad, [[ int_set_del(fs->pool, v1.val.ad, v2.val.i) ]]); RESULT(T_CLIST, ad, [[ int_set_del(fpool, v1.val.ad, v2.val.i) ]]);
/* IP->Quad implicit conversion */ /* IP->Quad implicit conversion */
else if (val_is_ip4(&v2)) else if (val_is_ip4(&v2))
RESULT(T_CLIST, ad, [[ int_set_del(fs->pool, v1.val.ad, ipa_to_u32(v2.val.ip)) ]]); RESULT(T_CLIST, ad, [[ int_set_del(fpool, v1.val.ad, ipa_to_u32(v2.val.ip)) ]]);
else if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy) || (v2.type == T_CLIST)) else if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy) || (v2.type == T_CLIST))
RESULT(T_CLIST, ad, [[ clist_filter(fs->pool, v1.val.ad, &v2, 0) ]]); RESULT(T_CLIST, ad, [[ clist_filter(fpool, v1.val.ad, &v2, 0) ]]);
else else
runtime("Can't delete non-pair"); runtime("Can't delete non-pair");
} }
@ -897,22 +917,22 @@
{ {
/* v2.val is either EC or EC-set */ /* v2.val is either EC or EC-set */
if ((v2.type == T_SET) && eclist_set_type(v2.val.t) || (v2.type == T_ECLIST)) if ((v2.type == T_SET) && eclist_set_type(v2.val.t) || (v2.type == T_ECLIST))
RESULT(T_ECLIST, ad, [[ eclist_filter(fs->pool, v1.val.ad, &v2, 0) ]]); RESULT(T_ECLIST, ad, [[ eclist_filter(fpool, v1.val.ad, &v2, 0) ]]);
else if (v2.type != T_EC) else if (v2.type != T_EC)
runtime("Can't delete non-ec"); runtime("Can't delete non-ec");
else else
RESULT(T_ECLIST, ad, [[ ec_set_del(fs->pool, v1.val.ad, v2.val.ec) ]]); RESULT(T_ECLIST, ad, [[ ec_set_del(fpool, v1.val.ad, v2.val.ec) ]]);
} }
else if (v1.type == T_LCLIST) else if (v1.type == T_LCLIST)
{ {
/* v2.val is either LC or LC-set */ /* v2.val is either LC or LC-set */
if ((v2.type == T_SET) && lclist_set_type(v2.val.t) || (v2.type == T_LCLIST)) if ((v2.type == T_SET) && lclist_set_type(v2.val.t) || (v2.type == T_LCLIST))
RESULT(T_LCLIST, ad, [[ lclist_filter(fs->pool, v1.val.ad, &v2, 0) ]]); RESULT(T_LCLIST, ad, [[ lclist_filter(fpool, v1.val.ad, &v2, 0) ]]);
else if (v2.type != T_LC) else if (v2.type != T_LC)
runtime("Can't delete non-lc"); runtime("Can't delete non-lc");
else else
RESULT(T_LCLIST, ad, [[ lc_set_del(fs->pool, v1.val.ad, v2.val.lc) ]]); RESULT(T_LCLIST, ad, [[ lc_set_del(fpool, v1.val.ad, v2.val.lc) ]]);
} }
else else
@ -927,7 +947,7 @@
u32 key = 0; u32 key = 0;
if ((v2.type == T_SET) && (v2.val.t->from.type == T_INT)) if ((v2.type == T_SET) && (v2.val.t->from.type == T_INT))
RESULT(T_PATH, ad, [[ as_path_filter(fs->pool, v1.val.ad, v2.val.t, key, 1) ]]); RESULT(T_PATH, ad, [[ as_path_filter(fpool, v1.val.ad, v2.val.t, key, 1) ]]);
else else
runtime("Can't filter integer"); runtime("Can't filter integer");
} }
@ -938,7 +958,7 @@
struct f_val dummy; struct f_val dummy;
if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy) || (v2.type == T_CLIST)) if ((v2.type == T_SET) && clist_set_type(v2.val.t, &dummy) || (v2.type == T_CLIST))
RESULT(T_CLIST, ad, [[ clist_filter(fs->pool, v1.val.ad, &v2, 1) ]]); RESULT(T_CLIST, ad, [[ clist_filter(fpool, v1.val.ad, &v2, 1) ]]);
else else
runtime("Can't filter pair"); runtime("Can't filter pair");
} }
@ -947,7 +967,7 @@
{ {
/* v2.val is either EC or EC-set */ /* v2.val is either EC or EC-set */
if ((v2.type == T_SET) && eclist_set_type(v2.val.t) || (v2.type == T_ECLIST)) if ((v2.type == T_SET) && eclist_set_type(v2.val.t) || (v2.type == T_ECLIST))
RESULT(T_ECLIST, ad, [[ eclist_filter(fs->pool, v1.val.ad, &v2, 1) ]]); RESULT(T_ECLIST, ad, [[ eclist_filter(fpool, v1.val.ad, &v2, 1) ]]);
else else
runtime("Can't filter ec"); runtime("Can't filter ec");
} }
@ -956,7 +976,7 @@
{ {
/* v2.val is either LC or LC-set */ /* v2.val is either LC or LC-set */
if ((v2.type == T_SET) && lclist_set_type(v2.val.t) || (v2.type == T_LCLIST)) if ((v2.type == T_SET) && lclist_set_type(v2.val.t) || (v2.type == T_LCLIST))
RESULT(T_LCLIST, ad, [[ lclist_filter(fs->pool, v1.val.ad, &v2, 1) ]]); RESULT(T_LCLIST, ad, [[ lclist_filter(fpool, v1.val.ad, &v2, 1) ]]);
else else
runtime("Can't filter lc"); runtime("Can't filter lc");
} }
@ -966,7 +986,9 @@
} }
INST(FI_ROA_CHECK_IMPLICIT, 0, 1) { /* ROA Check */ INST(FI_ROA_CHECK_IMPLICIT, 0, 1) { /* ROA Check */
NEVER_CONSTANT;
RTC(1); RTC(1);
struct rtable *table = rtc->table;
ACCESS_RTE; ACCESS_RTE;
ACCESS_EATTRS; ACCESS_EATTRS;
const net_addr *net = (*fs->rte)->net->n.addr; const net_addr *net = (*fs->rte)->net->n.addr;
@ -994,9 +1016,11 @@
} }
INST(FI_ROA_CHECK_EXPLICIT, 2, 1) { /* ROA Check */ INST(FI_ROA_CHECK_EXPLICIT, 2, 1) { /* ROA Check */
NEVER_CONSTANT;
ARG(1, T_NET); ARG(1, T_NET);
ARG(2, T_INT); ARG(2, T_INT);
RTC(3); RTC(3);
struct rtable *table = rtc->table;
u32 as = v2.val.i; u32 as = v2.val.i;
@ -1015,15 +1039,18 @@
INST(FI_FORMAT, 1, 0) { /* Format */ INST(FI_FORMAT, 1, 0) { /* Format */
ARG_ANY(1); ARG_ANY(1);
RESULT(T_STRING, s, val_format_str(fs, &v1)); RESULT(T_STRING, s, val_format_str(fpool, &v1));
} }
INST(FI_ASSERT, 1, 0) { /* Birdtest Assert */ INST(FI_ASSERT, 1, 0) { /* Birdtest Assert */
NEVER_CONSTANT;
ARG(1, T_BOOL); ARG(1, T_BOOL);
FID_MEMBER(const char *, s, s, [[strcmp(f1->s, f2->s)]], string \"%s\", item->s); FID_MEMBER(char *, s, [[strcmp(f1->s, f2->s)]], string \"%s\", item->s);
ASSERT(s);
if (!bt_assert_hook) if (!bt_assert_hook)
runtime("No bt_assert hook registered, can't assert"); runtime("No bt_assert hook registered, can't assert");
bt_assert_hook(res.val.i, what); bt_assert_hook(v1.val.i, what);
} }

13
filter/filter.c
View File

@ -150,14 +150,6 @@ f_rta_cow(struct filter_state *fs)
f_cache_eattrs(fs); f_cache_eattrs(fs);
} }
static char *
val_format_str(struct filter_state *fs, struct f_val *v) {
buffer b;
LOG_BUFFER_INIT(b);
val_format(v, &b);
return lp_strdup(fs->pool, b.start);
}
static struct tbf rl_runtime_err = TBF_DEFAULT_LOG_LIMITS; static struct tbf rl_runtime_err = TBF_DEFAULT_LOG_LIMITS;
/** /**
@ -215,6 +207,9 @@ interpret(struct filter_state *fs, const struct f_line *line, struct f_val *val)
return F_ERROR; \ return F_ERROR; \
} while(0) } while(0)
#define falloc(size) lp_alloc(fs->pool, size)
#define fpool fs->pool
#define ACCESS_RTE do { if (!fs->rte) runtime("No route to access"); } while (0) #define ACCESS_RTE do { if (!fs->rte) runtime("No route to access"); } while (0)
#define ACCESS_EATTRS do { if (!fs->eattrs) f_cache_eattrs(fs); } while (0) #define ACCESS_EATTRS do { if (!fs->eattrs) f_cache_eattrs(fs); } while (0)
@ -224,6 +219,8 @@ interpret(struct filter_state *fs, const struct f_line *line, struct f_val *val)
#undef v2 #undef v2
#undef v3 #undef v3
#undef runtime #undef runtime
#undef falloc
#undef fpool
#undef ACCESS_RTE #undef ACCESS_RTE
#undef ACCESS_EATTRS #undef ACCESS_EATTRS
} }

10
lib/resource.h
View File

@ -101,9 +101,13 @@ void buffer_realloc(void **buf, unsigned *size, unsigned need, unsigned item_siz
*/ */
#define DMALLOC_DISABLE #define DMALLOC_DISABLE
#include <dmalloc.h> #include <dmalloc.h>
#define xmalloc(size) _xmalloc_leap(__FILE__, __LINE__, size) #define xmalloc(size) \
#define xrealloc(size) _xrealloc_leap(__FILE__, __LINE__, size) dmalloc_malloc(__FILE__, __LINE__, (size), DMALLOC_FUNC_MALLOC, 0, 1)
#define xfree(ptr) _xfree_leap(__FILE__, __LINE__, ptr) #define xrealloc(ptr, size) \
dmalloc_realloc(__FILE__, __LINE__, (ptr), (size), DMALLOC_FUNC_REALLOC, 1)
#define xfree(ptr) \
dmalloc_free(__FILE__, __LINE__, (ptr), DMALLOC_FUNC_FREE)
#else #else
/* /*
* Unfortunately, several libraries we might want to link to define * Unfortunately, several libraries we might want to link to define