unit-tests/test-cases/image-state-deny/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_priv.h>
  30 #include <dlfcn.h>
  31
  32 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  33
  34 static bool doneRegistering = false;
  35
  36
  37 //
  38 // By returning a string, we prevent that image from loading.
  39 // We just prevent any image with "bar" in its name from loading.
  40 //
  41
  42 static const char* batchMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  43 {
  44         for (uint32_t i=0; i < infoCount; ++i) {
  45                 //fprintf(stderr, "batch mapped: %d %s\n", i, info[i].imageFilePath);
  46                 if ( strstr(info[i].imageFilePath, "bar") != NULL )
  47                         return "can't load bar";
  48         }
  49         return NULL;
  50 }
  51
  52 static const char* singleMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  53 {
  54         //fprintf(stderr, "single mapped: %s\n", info[0].imageFilePath);
  55         if ( strstr(info[0].imageFilePath, "bar") != NULL )
  56                 return "can't load bar";
  57         return NULL;
  58 }
  59
  60
  61
  62 static const char* singleInitializedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  63 {
  64         //fprintf(stderr, "singleInitializedHandler(%s)\n", info[0].imageFilePath);
  65         if ( doneRegistering ) {
  66                 FAIL("image-state-deny something loaded");
  67                 exit(0);
  68         }
  69         return NULL;
  70 }
  71
  72 //static const char* batchBoundHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  73 //{
  74 //      //for (uint32_t i=0; i < infoCount; ++i)
  75 //      //      fprintf(stderr, "bound: %u %s\n", i, info[i].imageFilePath);
  76 //      return NULL;
  77 //}
  78
  79 static void load(const char* name)
  80 {
  81         void* handle = dlopen(name, RTLD_LAZY);
  82         if ( handle != NULL ) {
  83                 FAIL("image-state-deny: dlopen(%s) should have failed", name);
  84                 exit(0);
  85         }
  86 }
  87
  88
  89 int main(int argc, const char* argv[])
  90 {
  91         // tell dyld we want to know when images successfully loaded
  92         dyld_register_image_state_change_handler(dyld_image_state_initialized, false, singleInitializedHandler);
  93         doneRegistering = true;
  94
  95         // tell dyld we want to know when images successfully loaded
  96         //dyld_register_image_state_change_handler(dyld_image_state_bound, true, batchBoundHandler);
  97
  98         // tell dyld we want to know when images are mapped
  99         if ( argc > 1 )
 100                 dyld_register_image_state_change_handler(dyld_image_state_dependents_mapped, true, batchMappedHandler);
 101         else
 102                 dyld_register_image_state_change_handler(dyld_image_state_mapped, false, singleMappedHandler);
 103
 104         load("foo.bundle");
 105
 106         load("bar.bundle");
 107
 108         //dlopen("/usr/lib/libz.1.2.3.dylib", RTLD_LAZY);
 109
 110         PASS("image-state-deny");
 111
 112         return EXIT_SUCCESS;
 113 }