git.m6w6.name Git - m6w6/ext-psi/blob - src/types/decl_file.c

   1 /*******************************************************************************
   2  Copyright (c) 2016, Michael Wallner <mike@php.net>.
   3  All rights reserved.
   4
   5  Redistribution and use in source and binary forms, with or without
   6  modification, are permitted provided that the following conditions are met:
   7
   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.
  13
  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  *******************************************************************************/
  25
  26 #include "php_psi_stdinc.h"
  27 #include "data.h"
  28
  29 #include <dlfcn.h>
  30
  31 void psi_decl_file_dtor(struct psi_decl_file *file)
  32 {
  33         if (file->libnames) {
  34                 psi_plist_free(file->libnames);
  35         }
  36         if (file->dlopened) {
  37                 psi_plist_free(file->dlopened);
  38         }
  39         if (file->filename) {
  40                 free(file->filename);
  41         }
  42         memset(file, 0, sizeof(*file));
  43 }
  44
  45 static inline bool validate_lib(struct psi_data *dst, const char *libname, void **dlopened)
  46 {
  47         char lib[MAXPATHLEN];
  48         size_t len;
  49
  50         if (!libname) {
  51                 /* FIXME: assume stdlib */
  52                 return true;
  53         } else if (!strchr(libname, '/')) {
  54                 len = snprintf(lib, MAXPATHLEN, "lib%s.%s", libname, PHP_PSI_SHLIB_SUFFIX);
  55                 if (MAXPATHLEN == len) {
  56                         dst->error(dst, NULL, PSI_WARNING, "Library name too long: '%s'",
  57                                         libname);
  58                 }
  59                 lib[len] = 0;
  60                 libname = lib;
  61         }
  62         if (!(*dlopened = dlopen(libname, RTLD_LAZY | RTLD_LOCAL))) {
  63                 dst->error(dst, NULL, PSI_WARNING, "Could not open library '%s': %s.",
  64                                 libname, dlerror());
  65                 return false;
  66         }
  67
  68         return true;
  69 }
  70
  71 bool psi_decl_file_validate(struct psi_data *dst, struct psi_data *src)
  72 {
  73         size_t i = 0;
  74         char *libname;
  75         void *dlopened;
  76
  77         while (psi_plist_get(src->file.libnames, i++, &libname)) {
  78                 if (!validate_lib(dst, libname, &dlopened)) {
  79                         return false;
  80                 }
  81
  82                 libname = strdup(libname);
  83                 dst->file.libnames = psi_plist_add(dst->file.libnames, &libname);
  84                 dst->file.dlopened = psi_plist_add(dst->file.dlopened, &dlopened);
  85         }
  86
  87         if (src->file.filename) {
  88                 dst->file.filename = strdup(src->file.filename);
  89         }
  90         return true;
  91 }
  92
  93 void psi_libs_free(void **dlopened) {
  94         if (*dlopened) {
  95                 dlclose(*dlopened);
  96         }
  97 }
  98
  99 void psi_names_free(char **name) {
 100         if (*name) {
 101                 free(*name);
 102         }
 103 }