unit-tests/test-cases/image-state-deny-all_image_infos/main.c

   1 /*
   2  * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 #include <stdbool.h>  // fprintf(), NULL
  24 #include <stdio.h>  // fprintf(), NULL
  25 #include <stdlib.h> // exit(), EXIT_SUCCESS
  26 #include <stdbool.h>
  27 #include <string.h>
  28 #include <mach-o/dyld.h>
  29 #include <mach-o/dyld_images.h>
  30 #include <mach-o/dyld_priv.h>
  31 #include <dlfcn.h>
  32
  33 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  34
  35
  36 //
  37 // By returning a string, we prevent that image from loading.
  38 // We just prevent any image with "bar" in its name from loading.
  39 //
  40
  41
  42 static const char* singleMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  43 {
  44         //fprintf(stderr, "single mapped: %s\n", info[0].imageFilePath);
  45         if ( strstr(info[0].imageFilePath, "bar") != NULL )
  46                 return "can't load bar";
  47         return NULL;
  48 }
  49
  50
  51 static void load(const char* name)
  52 {
  53         void* handle = dlopen(name, RTLD_LAZY);
  54         if ( handle != NULL ) {
  55                 FAIL("image-state-deny-all_image_infos: dlopen(%s) should have failed", name);
  56                 exit(0);
  57         }
  58 }
  59
  60
  61 int main(int argc, const char* argv[])
  62 {
  63         // tell dyld we want to know when images are mapped
  64         dyld_register_image_state_change_handler(dyld_image_state_mapped, false, singleMappedHandler);
  65
  66     const struct dyld_all_image_infos* infos = _dyld_get_all_image_infos();
  67     const uint32_t initialCount = infos->infoArrayCount;
  68
  69         load("bar.bundle");
  70
  71     if ( infos->infoArrayCount != initialCount ){
  72                 FAIL("image-state-deny-all_image_infos: infoArrayCount should not have changed");
  73                 exit(0);
  74         }
  75
  76     //for (int i=0; i < infos->infoArrayCount; ++i)
  77     //    printf("mh=%p, path=%s\n", infos->infoArray[i].imageLoadAddress, infos->infoArray[i].imageFilePath);
  78
  79         PASS("image-state-deny-all_image_infos");
  80
  81         return EXIT_SUCCESS;
  82 }