toolkit/crashreporter/test/dumputils.cpp@6474c204b198 (annotated)
toolkit/crashreporter/test/dumputils.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | #include <stdio.h> |
| michael@0 | 2 | |
| michael@0 | 3 | #include "google_breakpad/processor/minidump.h" |
| michael@0 | 4 | #include "nscore.h" |
| michael@0 | 5 | |
| michael@0 | 6 | using namespace google_breakpad; |
| michael@0 | 7 | |
| michael@0 | 8 | // Return true if the specified minidump contains a stream of |stream_type|. |
| michael@0 | 9 | extern "C" |
| michael@0 | 10 | NS_EXPORT bool |
| michael@0 | 11 | DumpHasStream(const char* dump_file, uint32_t stream_type) |
| michael@0 | 12 | { |
| michael@0 | 13 | Minidump dump(dump_file); |
| michael@0 | 14 | if (!dump.Read()) |
| michael@0 | 15 | return false; |
| michael@0 | 16 | |
| michael@0 | 17 | uint32_t length; |
| michael@0 | 18 | if (!dump.SeekToStreamType(stream_type, &length) || length == 0) |
| michael@0 | 19 | return false; |
| michael@0 | 20 | |
| michael@0 | 21 | return true; |
| michael@0 | 22 | } |
| michael@0 | 23 | |
| michael@0 | 24 | // Return true if the specified minidump contains a memory region |
| michael@0 | 25 | // that contains the instruction pointer from the exception record. |
| michael@0 | 26 | extern "C" |
| michael@0 | 27 | NS_EXPORT bool |
| michael@0 | 28 | DumpHasInstructionPointerMemory(const char* dump_file) |
| michael@0 | 29 | { |
| michael@0 | 30 | Minidump minidump(dump_file); |
| michael@0 | 31 | if (!minidump.Read()) |
| michael@0 | 32 | return false; |
| michael@0 | 33 | |
| michael@0 | 34 | MinidumpException* exception = minidump.GetException(); |
| michael@0 | 35 | MinidumpMemoryList* memory_list = minidump.GetMemoryList(); |
| michael@0 | 36 | if (!exception || !memory_list) { |
| michael@0 | 37 | return false; |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | MinidumpContext* context = exception->GetContext(); |
| michael@0 | 41 | if (!context) |
| michael@0 | 42 | return false; |
| michael@0 | 43 | |
| michael@0 | 44 | uint64_t instruction_pointer; |
| michael@0 | 45 | if (!context->GetInstructionPointer(&instruction_pointer)) { |
| michael@0 | 46 | return false; |
| michael@0 | 47 | } |
| michael@0 | 48 | |
| michael@0 | 49 | MinidumpMemoryRegion* region = |
| michael@0 | 50 | memory_list->GetMemoryRegionForAddress(instruction_pointer); |
| michael@0 | 51 | return region != nullptr; |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | // This function tests for a very specific condition. It finds |
| michael@0 | 55 | // an address in a file, "crash-addr", in the CWD. It checks |
| michael@0 | 56 | // that the minidump has a memory region starting at that |
| michael@0 | 57 | // address. The region must be 32 bytes long and contain the |
| michael@0 | 58 | // values 0 to 31 as bytes, in ascending order. |
| michael@0 | 59 | extern "C" |
| michael@0 | 60 | NS_EXPORT bool |
| michael@0 | 61 | DumpCheckMemory(const char* dump_file) |
| michael@0 | 62 | { |
| michael@0 | 63 | Minidump dump(dump_file); |
| michael@0 | 64 | if (!dump.Read()) |
| michael@0 | 65 | return false; |
| michael@0 | 66 | |
| michael@0 | 67 | MinidumpMemoryList* memory_list = dump.GetMemoryList(); |
| michael@0 | 68 | if (!memory_list) { |
| michael@0 | 69 | return false; |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | void *addr; |
| michael@0 | 73 | FILE *fp = fopen("crash-addr", "r"); |
| michael@0 | 74 | if (!fp) |
| michael@0 | 75 | return false; |
| michael@0 | 76 | if (fscanf(fp, "%p", &addr) != 1) |
| michael@0 | 77 | return false; |
| michael@0 | 78 | fclose(fp); |
| michael@0 | 79 | |
| michael@0 | 80 | remove("crash-addr"); |
| michael@0 | 81 | |
| michael@0 | 82 | MinidumpMemoryRegion* region = |
| michael@0 | 83 | memory_list->GetMemoryRegionForAddress(uint64_t(addr)); |
| michael@0 | 84 | if(!region) |
| michael@0 | 85 | return false; |
| michael@0 | 86 | |
| michael@0 | 87 | const uint8_t* chars = region->GetMemory(); |
| michael@0 | 88 | if (region->GetSize() != 32) |
| michael@0 | 89 | return false; |
| michael@0 | 90 | |
| michael@0 | 91 | for (int i=0; i<32; i++) { |
| michael@0 | 92 | if (chars[i] != i) |
| michael@0 | 93 | return false; |
| michael@0 | 94 | } |
| michael@0 | 95 | |
| michael@0 | 96 | return true; |
| michael@0 | 97 | } |
