michael@0: #include <stdio.h>
michael@0: 
michael@0: #include "google_breakpad/processor/minidump.h"
michael@0: #include "nscore.h"
michael@0: 
michael@0: using namespace google_breakpad;
michael@0: 
michael@0: // Return true if the specified minidump contains a stream of |stream_type|.
michael@0: extern "C"
michael@0: NS_EXPORT bool
michael@0: DumpHasStream(const char* dump_file, uint32_t stream_type)
michael@0: {
michael@0:   Minidump dump(dump_file);
michael@0:   if (!dump.Read())
michael@0:     return false;
michael@0: 
michael@0:   uint32_t length;
michael@0:   if (!dump.SeekToStreamType(stream_type, &length) || length == 0)
michael@0:     return false;
michael@0: 
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: // Return true if the specified minidump contains a memory region
michael@0: // that contains the instruction pointer from the exception record.
michael@0: extern "C"
michael@0: NS_EXPORT bool
michael@0: DumpHasInstructionPointerMemory(const char* dump_file)
michael@0: {
michael@0:   Minidump minidump(dump_file);
michael@0:   if (!minidump.Read())
michael@0:     return false;
michael@0: 
michael@0:   MinidumpException* exception = minidump.GetException();
michael@0:   MinidumpMemoryList* memory_list = minidump.GetMemoryList();
michael@0:   if (!exception || !memory_list) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   MinidumpContext* context = exception->GetContext();
michael@0:   if (!context)
michael@0:     return false;
michael@0: 
michael@0:   uint64_t instruction_pointer;
michael@0:   if (!context->GetInstructionPointer(&instruction_pointer)) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   MinidumpMemoryRegion* region =
michael@0:     memory_list->GetMemoryRegionForAddress(instruction_pointer);
michael@0:   return region != nullptr;
michael@0: }
michael@0: 
michael@0: // This function tests for a very specific condition. It finds
michael@0: // an address in a file, "crash-addr", in the CWD. It checks
michael@0: // that the minidump has a memory region starting at that
michael@0: // address. The region must be 32 bytes long and contain the
michael@0: // values 0 to 31 as bytes, in ascending order.
michael@0: extern "C"
michael@0: NS_EXPORT bool
michael@0: DumpCheckMemory(const char* dump_file)
michael@0: {
michael@0:   Minidump dump(dump_file);
michael@0:   if (!dump.Read())
michael@0:     return false;
michael@0: 
michael@0:   MinidumpMemoryList* memory_list = dump.GetMemoryList();
michael@0:   if (!memory_list) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   void *addr;
michael@0:   FILE *fp = fopen("crash-addr", "r");
michael@0:   if (!fp)
michael@0:     return false;
michael@0:   if (fscanf(fp, "%p", &addr) != 1)
michael@0:     return false;
michael@0:   fclose(fp);
michael@0: 
michael@0:   remove("crash-addr");
michael@0: 
michael@0:   MinidumpMemoryRegion* region =
michael@0:     memory_list->GetMemoryRegionForAddress(uint64_t(addr));
michael@0:   if(!region)
michael@0:     return false;
michael@0: 
michael@0:   const uint8_t* chars = region->GetMemory();
michael@0:   if (region->GetSize() != 32)
michael@0:     return false;
michael@0: 
michael@0:   for (int i=0; i<32; i++) {
michael@0:     if (chars[i] != i)
michael@0:       return false;
michael@0:   }
michael@0: 
michael@0:   return true;
michael@0: }