12 #include "php_scandir.h"
17 #define psi_predef_count(of) ((sizeof(psi_predef ##of## s)/sizeof(psi_predef ##of))-1)
18 typedef struct psi_predef_type
{
20 const char *type_name
;
23 static const psi_predef_type psi_predef_types
[] = {
26 #define psi_predef_type_count() psi_predef_count(_type)
28 typedef struct psi_predef_const
{
30 const char *type_name
;
35 static const psi_predef_const psi_predef_consts
[] = {
38 #define psi_predef_const_count() psi_predef_count(_const)
40 typedef struct psi_predef_struct_member
{
42 const char *type_name
;
48 } psi_predef_struct_member
;
49 #define PSI_PREDEF_STRUCT_MEMBERS 32
50 typedef struct psi_predef_struct
{
52 psi_predef_struct_member members
[PSI_PREDEF_STRUCT_MEMBERS
];
54 static const psi_predef_struct psi_predef_structs
[] = {
57 #define psi_predef_struct_count() psi_predef_count(_struct)
59 static int validate_lib(PSI_Data
*data
, void **dlopened
) {
61 const char *ptr
= data
->psi
.file
.ln
;
65 /* FIXME: assume stdlib */
67 } else if (!strchr(ptr
, '/')) {
69 len
= snprintf(lib
, MAXPATHLEN
, "lib%s.dylib", ptr
);
71 len
= snprintf(lib
, MAXPATHLEN
, "lib%s.so", ptr
);
73 if (MAXPATHLEN
== len
) {
74 data
->error(PSI_WARNING
, "Library name too long: '%s'", ptr
);
79 if (!(*dlopened
= dlopen(ptr
, RTLD_LAZY
|RTLD_LOCAL
))) {
80 data
->error(PSI_WARNING
, "Could not open library '%s': %s.",
81 data
->psi
.file
.fn
, dlerror());
87 static inline int locate_decl_type_alias(decl_typedefs
*defs
, decl_type
*type
) {
93 for (i
= 0; i
< defs
->count
; ++i
) {
94 if (!strcmp(defs
->list
[i
]->alias
, type
->name
)) {
95 type
->real
= defs
->list
[i
]->type
;
101 static inline int locate_decl_type_struct(decl_structs
*structs
, decl_type
*type
) {
107 for (i
= 0; i
< structs
->count
; ++i
) {
108 if (!strcmp(structs
->list
[i
]->name
, type
->name
)) {
109 type
->strct
= structs
->list
[i
];
116 static inline int validate_decl_type(PSI_Data
*data
, decl_type
*type
) {
117 switch (type
->type
) {
119 if (!data
->defs
|| !locate_decl_type_alias(data
->defs
, type
)) {
122 return validate_decl_type(data
, type
->real
);
124 if (!data
->structs
|| !locate_decl_type_struct(data
->structs
, type
)) {
131 static inline int validate_decl_typedef(PSI_Data
*data
, decl_typedef
*def
) {
132 if (!validate_decl_type(data
, def
->type
)) {
133 data
->error(PSI_WARNING
, "Type '%s' cannot be aliased to '%s'",
134 def
->type
->name
, def
->alias
);
137 /* FIXME: check def->alias */
141 static inline int validate_constant(PSI_Data
*data
, constant
*c
) {
146 static inline int validate_decl_arg(PSI_Data
*data
, decl_arg
*arg
) {
147 if (!validate_decl_type(data
, arg
->type
)) {
148 data
->error(PSI_WARNING
, "Cannot use '%s' as type for '%s'",
149 arg
->type
->name
, arg
->var
->name
);
155 static inline int validate_decl_struct(PSI_Data
*data
, decl_struct
*s
) {
158 for (i
= 0; i
< s
->args
->count
; ++i
) {
159 if (!validate_decl_arg(data
, s
->args
->args
[i
])) {
164 for (i
= 0; i
< s
->args
->count
; ++i
) {
165 decl_arg
*darg
= s
->args
->args
[i
];
167 if (!validate_decl_arg(data
, darg
)) {
171 ZEND_ASSERT(!darg
->var
->arg
);
172 darg
->var
->arg
= darg
;
177 if (darg
->var
->pointer_level
&& (!darg
->var
->array_size
|| darg
->var
->pointer_level
== 1)) {
180 t
= real_decl_type(darg
->type
)->type
;
184 decl_arg
*last
= s
->args
->args
[i
-1];
185 darg
->layout
= init_decl_struct_layout(
186 psi_t_align(t
, last
->layout
->pos
+ last
->layout
->len
),
187 psi_t_size(t
) * darg
->var
->array_size
);
189 darg
->layout
= init_decl_struct_layout(0, psi_t_size(t
));
192 if (s
->size
< darg
->layout
->pos
+ darg
->layout
->len
) {
193 s
->size
= darg
->layout
->pos
+ darg
->layout
->len
;
199 static const char * const abi_ccs
[] = {
201 "extern", /* > - all the same */
206 static inline int validate_decl_abi(PSI_Data
*data
, decl_abi
*abi
) {
209 for (i
= 0; i
< sizeof(abi_ccs
)/sizeof(char*); ++i
) {
210 if (strcasecmp(abi
->convention
, abi_ccs
[i
])) {
214 data
->error(PSI_WARNING
, "Invalid calling convention: '%s'", abi
->convention
);
217 static inline int validate_decl_func(PSI_Data
*data
, void *dl
, decl
*decl
, decl_arg
*func
)
219 if (!strcmp(func
->var
->name
, "dlsym")) {
220 data
->error(PSI_WARNING
, "Cannot dlsym dlsym (sic!)");
224 if (!validate_decl_arg(data
, func
)) {
228 # define RTLD_NEXT ((void *) -1l)
230 decl
->dlptr
= dlsym(dl
?: RTLD_NEXT
, func
->var
->name
);
232 data
->error(PSI_WARNING
, "Failed to located symbol '%s': %s",
233 func
->var
->name
, dlerror());
238 static inline int validate_decl(PSI_Data
*data
, void *dl
, decl
*decl
) {
239 if (!validate_decl_abi(data
, decl
->abi
)) {
242 if (!validate_decl_func(data
, dl
, decl
, decl
->func
)) {
248 for (i
= 0; i
< decl
->args
->count
; ++i
) {
249 if (!validate_decl_arg(data
, decl
->args
->args
[i
])) {
257 static inline decl
*locate_impl_decl(decls
*decls
, return_stmt
*ret
) {
260 for (i
= 0; i
< decls
->count
; ++i
) {
261 if (!strcmp(decls
->list
[i
]->func
->var
->name
, ret
->decl
->name
)) {
262 ret
->decl
->arg
= decls
->list
[i
]->func
;
263 return decls
->list
[i
];
268 static inline int validate_impl_ret_stmt(PSI_Data
*data
, impl
*impl
) {
269 /* we must have exactly one ret stmt delcaring the native func to call */
270 /* and which type cast to apply */
271 if (impl
->stmts
->ret
.count
!= 1) {
272 if (impl
->stmts
->ret
.count
> 1) {
273 data
->error(PSI_WARNING
, "Too many `return` statements for implmentation %s;"
274 " found %zu, exactly one is needed",
275 impl
->func
->name
, impl
->stmts
->ret
.count
);
277 data
->error(PSI_WARNING
, "Missing `return` statement for implementation %s",
282 if (!(impl
->decl
= locate_impl_decl(data
->decls
, impl
->stmts
->ret
.list
[0]))) {
283 data
->error(PSI_WARNING
, "Missing declaration for implementation %s",
290 static inline int validate_impl_let_stmts(PSI_Data
*data
, impl
*impl
) {
292 /* we can have multiple let stmts */
293 /* check that we have a let stmt for every decl arg */
294 if (impl
->decl
->args
) for (i
= 0; i
< impl
->decl
->args
->count
; ++i
) {
295 decl_arg
*darg
= impl
->decl
->args
->args
[i
];
298 for (j
= 0; j
< impl
->stmts
->let
.count
; ++j
) {
299 let_stmt
*let
= impl
->stmts
->let
.list
[j
];
301 if (!strcmp(let
->var
->name
, darg
->var
->name
)) {
308 data
->error(PSI_WARNING
, "Missing `let` statement for arg '%s %.*s%s'"
309 " of declaration '%s' for implementation '%s'",
310 darg
->type
->name
, (int) darg
->var
->pointer_level
, "*****",
311 darg
->var
->name
, impl
->decl
->func
->var
->name
, impl
->func
->name
);
315 /* check that the let_value references a known variable or NULL */
316 for (i
= 0; i
< impl
->stmts
->let
.count
; ++i
) {
317 let_stmt
*let
= impl
->stmts
->let
.list
[i
];
320 if (let
->val
&& let
->val
->func
&& let
->val
->func
->alloc
) {
321 if (!validate_decl_type(data
, let
->val
->func
->alloc
->type
)) {
322 data
->error(PSI_WARNING
, "Cannot use '%s' as type for calloc in `let` statement",
323 let
->val
->func
->alloc
->type
->name
);
327 if (let
->val
&& let
->val
->var
) {
328 if (impl
->func
->args
) for (j
= 0; j
< impl
->func
->args
->count
; ++j
) {
329 impl_arg
*iarg
= impl
->func
->args
->args
[j
];
331 if (!strcmp(let
->val
->var
->name
, iarg
->var
->name
)) {
338 data
->error(PSI_WARNING
, "Unknown value '$%s' of `let` statement"
339 " for variable '%s' of implementation '%s'",
340 let
->val
->var
->name
, let
->var
->name
, impl
->func
->name
);
347 static inline int validate_impl_set_stmts(PSI_Data
*data
, impl
*impl
) {
349 /* we can have any count of set stmts; processing out vars */
350 /* check that set stmts reference known variables */
351 for (i
= 0; i
< impl
->stmts
->set
.count
; ++i
) {
352 set_stmt
*set
= impl
->stmts
->set
.list
[i
];
355 if (impl
->func
->args
) for (j
= 0; j
< impl
->func
->args
->count
; ++j
) {
356 impl_arg
*iarg
= impl
->func
->args
->args
[j
];
358 if (!strcmp(set
->var
->name
, iarg
->var
->name
)) {
365 data
->error(PSI_WARNING
, "Unknown variable '$%s' of `set` statement"
366 " of implementation '%s'",
367 set
->var
->name
, impl
->func
->name
);
371 for (j
= 0; j
< set
->val
->vars
->count
; ++j
) {
372 decl_var
*set_var
= set
->val
->vars
->vars
[j
];
375 if (impl
->decl
->args
) for (k
= 0; k
< impl
->decl
->args
->count
; ++k
) {
376 decl_arg
*set_arg
= impl
->decl
->args
->args
[k
];
378 if (!strcmp(set_var
->name
, set_arg
->var
->name
)) {
380 set_var
->arg
= set_arg
;
386 data
->error(PSI_WARNING
, "Unknown value '%s' of `set` statement"
387 " for variable '$%s' of implementation '%s'",
388 set_var
->name
, set
->arg
->var
->name
, impl
->func
->name
);
395 static inline int validate_impl_free_stmts(PSI_Data
*data
, impl
*impl
) {
397 /* we can have any count of free stmts; freeing any out vars */
398 for (i
= 0; i
< impl
->stmts
->fre
.count
; ++i
) {
399 free_stmt
*fre
= impl
->stmts
->fre
.list
[i
];
401 for (j
= 0; j
< fre
->vars
->count
; ++j
) {
402 decl_var
*free_var
= fre
->vars
->vars
[j
];
405 if (!strcmp(free_var
->name
, impl
->decl
->func
->var
->name
)) {
408 if (impl
->decl
->args
) for (k
= 0; k
< impl
->decl
->args
->count
; ++k
) {
409 decl_arg
*free_arg
= impl
->decl
->args
->args
[k
];
411 if (!strcmp(free_var
->name
, free_arg
->var
->name
)) {
413 free_var
->arg
= free_arg
;
419 data
->error(PSI_WARNING
, "Unknown variable '%s' of `free` statement"
420 " of implementation '%s'",
421 free_var
->name
, impl
->func
->name
);
428 static inline int validate_impl_stmts(PSI_Data
*data
, impl
*impl
) {
430 data
->error(PSI_WARNING
, "Missing body for implementation %s!",
435 if (!validate_impl_ret_stmt(data
, impl
)) {
439 if (!validate_impl_let_stmts(data
, impl
)) {
442 if (!validate_impl_set_stmts(data
, impl
)) {
445 if (!validate_impl_free_stmts(data
, impl
)) {
452 PSI_Context
*PSI_ContextInit(PSI_Context
*C
, PSI_ContextOps
*ops
, PSI_ContextErrorFunc error
)
458 C
= malloc(sizeof(*C
));
460 memset(C
, 0, sizeof(*C
));
466 /* build up predefs in a temporary PSI_Data for validation */
467 memset(&T
, 0, sizeof(T
));
470 for (i
= 0; i
< psi_predef_type_count(); ++i
) {
471 const psi_predef_type
*pre
= &psi_predef_types
[i
];
472 decl_type
*type
= init_decl_type(pre
->type_tag
, pre
->type_name
);
473 decl_typedef
*def
= init_decl_typedef(pre
->alias
, type
);
475 T
.defs
= add_decl_typedef(T
.defs
, def
);
477 for (i
= 0; i
< psi_predef_const_count(); ++i
) {
478 const psi_predef_const
*pre
= &psi_predef_consts
[i
];
479 impl_def_val
*val
= init_impl_def_val(pre
->val_type_tag
, pre
->val_text
);
480 const_type
*type
= init_const_type(pre
->type_tag
, pre
->type_name
);
481 constant
*constant
= init_constant(type
, pre
->name
, val
);
483 T
.consts
= add_constant(T
.consts
, constant
);
485 for (i
= 0; i
< psi_predef_struct_count(); ++i
) {
486 const psi_predef_struct
*pre
= &psi_predef_structs
[i
];
487 decl_args
*dargs
= init_decl_args(NULL
);
488 decl_struct
*dstruct
;
490 for (j
= 0; j
< PSI_PREDEF_STRUCT_MEMBERS
; ++j
) {
491 const psi_predef_struct_member
*member
= &pre
->members
[j
];
500 type
= init_decl_type(member
->type_tag
, member
->type_name
);
501 dvar
= init_decl_var(member
->name
, member
->pointer_level
, member
->array_size
);
502 darg
= init_decl_arg(type
, dvar
);
503 darg
->layout
= init_decl_struct_layout(member
->off
, member
->len
);
504 dargs
= add_decl_arg(dargs
, darg
);
507 dstruct
= init_decl_struct(pre
->name
, dargs
);
508 T
.structs
= add_decl_struct(T
.structs
, dstruct
);
511 for (i
= 0; i
< psi_predef_type_count(); ++i
) {
512 decl_typedef
*def
= T
.defs
->list
[i
];
514 if (validate_decl_typedef(&T
, def
)) {
515 C
->defs
= add_decl_typedef(C
->defs
, def
);
519 for (i
= 0; i
< psi_predef_const_count(); ++i
) {
520 constant
*constant
= T
.consts
->list
[i
];
522 if (validate_constant(&T
, constant
)) {
523 C
->consts
= add_constant(C
->consts
, constant
);
527 for (i
= 0; i
< psi_predef_struct_count(); ++i
) {
528 decl_struct
*dstruct
= T
.structs
->list
[i
];
530 if (validate_decl_struct(&T
, dstruct
)) {
531 C
->structs
= add_decl_struct(C
->structs
, dstruct
);
536 C
->data
= malloc(sizeof(*C
->data
));
537 PSI_DataExchange(C
->data
, &T
);
542 int PSI_ContextValidate(PSI_Context
*C
, PSI_Parser
*P
)
545 void *dlopened
= NULL
;
546 size_t count
= C
->count
++;
548 C
->data
= realloc(C
->data
, C
->count
* sizeof(*C
->data
));
549 D
= PSI_DataExchange(&C
->data
[count
], PSI_DATA(P
));
554 for (i
= 0; i
< D
->defs
->count
; ++i
) {
555 if (validate_decl_typedef(PSI_DATA(C
), D
->defs
->list
[i
])) {
556 C
->defs
= add_decl_typedef(C
->defs
, D
->defs
->list
[i
]);
563 for (i
= 0; i
< D
->structs
->count
; ++i
) {
564 if (validate_decl_struct(PSI_DATA(C
), D
->structs
->list
[i
])) {
565 C
->structs
= add_decl_struct(C
->structs
, D
->structs
->list
[i
]);
572 for (i
= 0; i
< D
->consts
->count
; ++i
) {
573 if (validate_constant(PSI_DATA(C
), D
->consts
->list
[i
])) {
574 C
->consts
= add_constant(C
->consts
, D
->consts
->list
[i
]);
579 if (!validate_lib(D
, &dlopened
)) {
583 add_decl_lib(&C
->psi
.libs
, dlopened
);
588 for (i
= 0; i
< D
->decls
->count
; ++i
) {
589 if (validate_decl(PSI_DATA(C
), dlopened
, D
->decls
->list
[i
])) {
590 C
->decls
= add_decl(C
->decls
, D
->decls
->list
[i
]);
597 for (i
= 0; i
< D
->impls
->count
; ++i
) {
598 if (validate_impl_stmts(PSI_DATA(C
), D
->impls
->list
[i
])) {
599 C
->impls
= add_impl(C
->impls
, D
->impls
->list
[i
]);
607 static int psi_select_dirent(const struct dirent
*entry
)
610 #define FNM_CASEFOLD 0
612 return 0 == fnmatch("*.psi", entry
->d_name
, FNM_CASEFOLD
);
615 void PSI_ContextBuild(PSI_Context
*C
, const char *path
)
618 struct dirent
**entries
= NULL
;
620 n
= php_scandir(path
, &entries
, psi_select_dirent
, alphasort
);
624 } else for (i
= 0; i
< n
; ++i
) {
625 char psi
[MAXPATHLEN
];
628 if (MAXPATHLEN
<= slprintf(psi
, MAXPATHLEN
, "%s/%s", path
, entries
[i
]->d_name
)) {
629 C
->error(PSI_WARNING
, "Path to PSI file too long: %s/%s",
630 path
, entries
[i
]->d_name
);
632 if (!PSI_ParserInit(&P
, psi
, C
->error
, 0)) {
633 C
->error(PSI_WARNING
, "Failed to init PSI parser (%s): %s",
634 psi
, strerror(errno
));
638 while (-1 != PSI_ParserScan(&P
)) {
639 PSI_ParserParse(&P
, PSI_TokenAlloc(&P
));
641 PSI_ParserParse(&P
, NULL
);
642 PSI_ContextValidate(C
, &P
);
646 if (PSI_ContextCompile(C
) && SUCCESS
!= zend_register_functions(NULL
, C
->closures
, NULL
, MODULE_PERSISTENT
)) {
647 C
->error(PSI_WARNING
, "Failed to register functions!");
651 for (i
= 0; i
< n
; ++i
) {
659 zend_function_entry
*PSI_ContextCompile(PSI_Context
*C
)
666 zc
.flags
= CONST_PERSISTENT
|CONST_CS
;
667 zc
.module_number
= EG(current_module
)->module_number
;
669 for (i
= 0; i
< C
->consts
->count
; ++i
) {
670 constant
*c
= C
->consts
->list
[i
];
672 zc
.name
= zend_string_init(c
->name
+ (c
->name
[0] == '\\'), strlen(c
->name
) - (c
->name
[0] == '\\'), 1);
673 ZVAL_NEW_STR(&zc
.value
, zend_string_init(c
->val
->text
, strlen(c
->val
->text
), 1));
675 switch (c
->type
->type
) {
677 convert_to_boolean(&zc
.value
);
680 convert_to_long(&zc
.value
);
683 convert_to_double(&zc
.value
);
686 zend_register_constant(&zc
);
691 return C
->closures
= C
->ops
->compile(C
);
694 void PSI_ContextDtor(PSI_Context
*C
)
700 free_decl_libs(&C
->psi
.libs
);
702 for (i
= 0; i
< C
->count
; ++i
) {
703 PSI_DataDtor(&C
->data
[i
]);
710 if (C
->consts
->list
) {
711 free(C
->consts
->list
);
722 if (C
->structs
->list
) {
723 free(C
->structs
->list
);
728 if (C
->decls
->list
) {
729 free(C
->decls
->list
);
734 if (C
->impls
->list
) {
735 free(C
->impls
->list
);
740 memset(C
, 0, sizeof(*C
));
743 void PSI_ContextFree(PSI_Context
**C
)