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

   1 /*
   2  * Copyright (c) 2014 Apple 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
  35 //
  36 // By returning a string, we prevent that image from loading.
  37 // We just prevent any image with "libz" in its name from loading.
  38 //
  39 static const char* singleMappedHandler(enum dyld_image_states state, uint32_t infoCount, const struct dyld_image_info info[])
  40 {
  41         //fprintf(stderr, "single mapped: %s\n", info[0].imageFilePath);
  42         if ( strstr(info[0].imageFilePath, "libz") != NULL )
  43                 return "can't load libz";
  44         return NULL;
  45 }
  46
  47
  48 int main(int argc, const char* argv[])
  49 {
  50         // tell dyld we want to know when images are mapped
  51   dyld_register_image_state_change_handler(dyld_image_state_mapped, false, singleMappedHandler);
  52
  53         void* handle = dlopen("libfoo1.dylib", RTLD_LAZY);
  54         if ( handle != NULL ) {
  55     FAIL("image-state-deny-cache-leak: dlopen(libfoo.dylib) should have failed");
  56     return EXIT_SUCCESS;
  57         }
  58
  59         handle = dlopen("libfoo2.dylib", RTLD_LAZY);
  60         if ( handle == NULL ) {
  61     FAIL("image-state-deny-cache-leak: dlopen(libfoo.dylib) should have succeeded");
  62     return EXIT_SUCCESS;
  63         }
  64   dlclose(handle);
  65
  66   // execute leaks command on myself
  67         char cmd[512];
  68         sprintf(cmd, "sudo leaks %u > /dev/null\n", getpid());
  69         int result = system(cmd);
  70         if ( result == EXIT_SUCCESS )
  71                 PASS("image-state-deny-cache-leak");
  72         else
  73                 FAIL("image-state-deny-cache-leak");
  74
  75
  76         return EXIT_SUCCESS;
  77 }