5872a32504eacc915137c266ba9a9eb08bd017d9
1 /*******************************************************************************
2 Copyright (c) 2016, Michael Wallner <mike@php.net>.
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions are met:
8 * Redistributions of source code must retain the above copyright notice,
9 this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above copyright
11 notice, this list of conditions and the following disclaimer in the
12 documentation and/or other materials provided with the distribution.
14 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
18 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *******************************************************************************/
26 #include "php_psi_stdinc.h"
32 #include <Zend/zend_smart_str.h>
36 #define PSI_FUNC_REDIRS
37 #include "php_psi_posix.h"
39 struct psi_decl
*psi_decl_init(struct psi_decl_arg
*func
, struct psi_plist
*args
)
41 struct psi_decl
*d
= pecalloc(1, sizeof(*d
), 1);
49 void psi_decl_free(struct psi_decl
**d_ptr
)
52 struct psi_decl
*d
= *d_ptr
;
56 psi_decl_abi_free(&d
->abi
);
57 psi_decl_arg_free(&d
->func
);
59 psi_plist_free(d
->args
);
62 zend_string_release(d
->redir
);
68 void psi_decl_dump(int fd
, struct psi_decl
*decl
)
71 psi_decl_abi_dump(fd
, decl
->abi
);
74 /* FIXME: functions returning arrays */
75 psi_decl_arg_dump(fd
, decl
->func
, 0);
79 struct psi_decl_arg
*arg
;
81 for (i
= 0; psi_plist_get(decl
->args
, i
, &arg
); ++i
) {
85 psi_decl_arg_dump(fd
, arg
, 0);
91 if (decl
->func
->var
->array_size
) {
92 dprintf(fd
, ")[%u]", decl
->func
->var
->array_size
);
95 dprintf(fd
, ") __asm__ (\"%s\");", decl
->redir
->val
);
101 static inline bool psi_decl_validate_func(struct psi_data
*data
,
102 struct psi_decl
*decl
, struct psi_decl_arg
*func
)
104 struct psi_func_redir
*redir
;
106 if (!func
->var
->name
) {
107 data
->error(data
, func
->token
, PSI_WARNING
, "Cannot load anonymous decl");
111 for (redir
= &psi_func_redirs
[0]; redir
->name
; ++redir
) {
112 if (!strcmp(func
->var
->name
->val
, redir
->name
)) {
113 decl
->sym
= redir
->func
;
120 while (!decl
->sym
&& psi_plist_get(data
->file
.dlopened
, i
++, &dl
)) {
121 decl
->sym
= dlsym(dl
, decl
->redir
? decl
->redir
->val
: func
->var
->name
->val
);
126 # define RTLD_NEXT ((void *) -1l)
129 # define RTLD_DEFAULT ((void *) 0)
131 decl
->sym
= dlsym(RTLD_DEFAULT
, decl
->redir
? decl
->redir
->val
: func
->var
->name
->val
);
133 data
->error(data
, func
->token
, PSI_WARNING
,
134 "Failed to locate symbol '%s(%s)': %s",
135 func
->var
->name
->val
,
136 decl
->redir
? decl
->redir
->val
: "",
137 dlerror() ?: "not found");
144 bool psi_decl_validate(struct psi_data
*data
, struct psi_decl
*decl
,
145 struct psi_validate_scope
*scope
)
147 if (!psi_decl_validate_nodl(data
, decl
, scope
)) {
150 if (!psi_decl_validate_func(data
, decl
, decl
->func
)) {
157 bool psi_decl_validate_nodl(struct psi_data
*data
, struct psi_decl
*decl
,
158 struct psi_validate_scope
*scope
)
161 decl
->abi
= psi_decl_abi_init(NULL
);
162 } else if (!psi_decl_abi_validate(data
, decl
->abi
)) {
163 data
->error(data
, decl
->abi
->token
, PSI_WARNING
,
164 "Invalid calling convention: '%s'",
165 decl
->abi
->token
->text
->val
);
168 if (!psi_decl_arg_validate(data
, decl
->func
, scope
)) {
173 struct psi_decl_arg
*arg
;
175 while (psi_plist_get(decl
->args
, i
++, &arg
)) {
176 if (!arg
->var
->name
) {
177 smart_str name
= {0};
179 smart_str_appendl_ex(&name
, ZEND_STRL("arg"), 1);
180 smart_str_append_unsigned_ex(&name
, i
, 1);
182 arg
->var
->name
= smart_str_extract(&name
);
183 arg
->var
->fqn
= zend_string_copy(arg
->var
->name
);
185 if (!psi_decl_arg_validate(data
, arg
, scope
)) {
194 bool psi_decl_is_blacklisted(const char *name
)
199 while (psi_plist_get(PSI_G(blacklist
).decls
, i
++, &blacklisted
)) {
200 if (!fnmatch(blacklisted
, name
, 0)) {
207 struct psi_decl_arg
*psi_decl_get_arg(struct psi_decl
*decl
, struct psi_decl_var
*var
) {
210 struct psi_decl_arg
*arg
= decl
->func
;
213 if (var
->arg
== arg
) {
216 } while (psi_plist_get(decl
->args
, i
++, &arg
));
219 return psi_decl_arg_get_by_var(var
, decl
->args
, decl
->func
);