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      1 // Copyright (c) 2010, Google Inc.
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are
      6 // met:
      7 //
      8 //     * Redistributions of source code must retain the above copyright
      9 // notice, this list of conditions and the following disclaimer.
     10 //     * Redistributions in binary form must reproduce the above
     11 // copyright notice, this list of conditions and the following disclaimer
     12 // in the documentation and/or other materials provided with the
     13 // distribution.
     14 //     * Neither the name of Google Inc. nor the names of its
     15 // contributors may be used to endorse or promote products derived from
     16 // this software without specific prior written permission.
     17 //
     18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
     29 
     30 #include <stdlib.h>
     31 #include <unistd.h>
     32 
     33 #include <string>
     34 
     35 #include "breakpad_googletest_includes.h"
     36 #include "common/using_std_string.h"
     37 #include "google_breakpad/processor/basic_source_line_resolver.h"
     38 #include "google_breakpad/processor/minidump_processor.h"
     39 #include "google_breakpad/processor/process_state.h"
     40 #include "processor/simple_symbol_supplier.h"
     41 
     42 namespace {
     43 
     44 using google_breakpad::BasicSourceLineResolver;
     45 using google_breakpad::MinidumpProcessor;
     46 using google_breakpad::ProcessState;
     47 using google_breakpad::SimpleSymbolSupplier;
     48 
     49 string TestDataDir() {
     50   return string(getenv("srcdir") ? getenv("srcdir") : ".") +
     51       "/src/processor/testdata";
     52 }
     53 
     54 // Find the given dump file in <srcdir>/src/processor/testdata, process it,
     55 // and get the exploitability rating. Returns EXPLOITABILITY_ERR_PROCESSING
     56 // if the crash dump can't be processed.
     57 google_breakpad::ExploitabilityRating
     58 ExploitabilityFor(const string& filename) {
     59   SimpleSymbolSupplier supplier(TestDataDir() + "/symbols");
     60   BasicSourceLineResolver resolver;
     61   MinidumpProcessor processor(&supplier, &resolver, true);
     62   ProcessState state;
     63 
     64   string minidump_file = TestDataDir() + "/" + filename;
     65 
     66   if (processor.Process(minidump_file, &state) !=
     67       google_breakpad::PROCESS_OK) {
     68     return google_breakpad::EXPLOITABILITY_ERR_PROCESSING;
     69   }
     70 
     71   return state.exploitability();
     72 }
     73 
     74 TEST(ExploitabilityTest, TestWindowsEngine) {
     75   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     76             ExploitabilityFor("ascii_read_av.dmp"));
     77   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     78             ExploitabilityFor("ascii_read_av_block_write.dmp"));
     79   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     80             ExploitabilityFor("ascii_read_av_clobber_write.dmp"));
     81   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     82             ExploitabilityFor("ascii_read_av_conditional.dmp"));
     83   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     84             ExploitabilityFor("ascii_read_av_then_jmp.dmp"));
     85   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     86             ExploitabilityFor("ascii_read_av_xchg_write.dmp"));
     87   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     88             ExploitabilityFor("ascii_write_av.dmp"));
     89   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     90             ExploitabilityFor("ascii_write_av_arg_to_call.dmp"));
     91   ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
     92             ExploitabilityFor("null_read_av.dmp"));
     93   ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
     94             ExploitabilityFor("null_write_av.dmp"));
     95   ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
     96             ExploitabilityFor("stack_exhaustion.dmp"));
     97   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
     98             ExploitabilityFor("exec_av_on_stack.dmp"));
     99   ASSERT_EQ(google_breakpad::EXPLOITABILITY_MEDIUM,
    100             ExploitabilityFor("write_av_non_null.dmp"));
    101   ASSERT_EQ(google_breakpad::EXPLOITABILITY_LOW,
    102             ExploitabilityFor("read_av_non_null.dmp"));
    103   ASSERT_EQ(google_breakpad::EXPLOITABILITY_LOW,
    104             ExploitabilityFor("read_av_clobber_write.dmp"));
    105   ASSERT_EQ(google_breakpad::EXPLOITABILITY_LOW,
    106             ExploitabilityFor("read_av_conditional.dmp"));
    107 }
    108 
    109 TEST(ExploitabilityTest, TestLinuxEngine) {
    110   ASSERT_EQ(google_breakpad::EXPLOITABILITY_NONE,
    111             ExploitabilityFor("linux_null_read_av.dmp"));
    112   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
    113             ExploitabilityFor("linux_overflow.dmp"));
    114   ASSERT_EQ(google_breakpad::EXPLOITABILITY_HIGH,
    115             ExploitabilityFor("linux_stacksmash.dmp"));
    116 }
    117 }
    118