snapshot: Add a minimal ModuleSnapshotMinidump and accessor from ProcessSnapshotMinidump

snapshot/minidump/module_snapshot_minidump.cc

Index: snapshot/minidump/module_snapshot_minidump.cc
diff --git a/snapshot/minidump/module_snapshot_minidump.cc b/snapshot/minidump/module_snapshot_minidump.cc
new file mode 100644
index 0000000000000000000000000000000000000000..12a340d56607a57e118f74d1992a1fc78450389b
--- /dev/null
+++ b/snapshot/minidump/module_snapshot_minidump.cc
@@ -0,0 +1,174 @@
+// Copyright 2015 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "snapshot/minidump/module_snapshot_minidump.h"
+
+#include "minidump/minidump_extensions.h"
+#include "snapshot/minidump/minidump_simple_string_dictionary_reader.h"
+#include "snapshot/minidump/minidump_string_list_reader.h"
+
+namespace crashpad {
+namespace internal {
+
+ModuleSnapshotMinidump::ModuleSnapshotMinidump()
+    : ModuleSnapshot(),
+      minidump_module_(),
+      annotations_vector_(),
+      annotations_simple_map_(),
+      initialized_() {
+}
+
+ModuleSnapshotMinidump::~ModuleSnapshotMinidump() {
+}
+
+bool ModuleSnapshotMinidump::Initialize(
+    FileReaderInterface* file_reader,
+    RVA minidump_module_rva,
+    const MINIDUMP_LOCATION_DESCRIPTOR*
+        minidump_module_crashpad_info_location) {
+  INITIALIZATION_STATE_SET_INITIALIZING(initialized_);
+
+  if (!file_reader->SeekSet(minidump_module_rva)) {
+    return false;
+  }
+
+  if (!file_reader->ReadExactly(&minidump_module_, sizeof(minidump_module_))) {
+    return false;
+  }
+
+  if (!InitializeModuleCrashpadInfo(file_reader,
+                                    minidump_module_crashpad_info_location)) {
+    return false;
+  }
+
+  INITIALIZATION_STATE_SET_VALID(initialized_);
+  return true;
+}
+
+std::string ModuleSnapshotMinidump::Name() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  return std::string();
+}
+
+uint64_t ModuleSnapshotMinidump::Address() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  return 0;
+}
+
+uint64_t ModuleSnapshotMinidump::Size() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  return 0;
+}
+
+time_t ModuleSnapshotMinidump::Timestamp() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  return 0;
+}
+
+void ModuleSnapshotMinidump::FileVersion(uint16_t* version_0,
+                                         uint16_t* version_1,
+                                         uint16_t* version_2,
+                                         uint16_t* version_3) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  *version_0 = 0;
+  *version_1 = 0;
+  *version_2 = 0;
+  *version_3 = 0;
+}
+
+void ModuleSnapshotMinidump::SourceVersion(uint16_t* version_0,
+                                           uint16_t* version_1,
+                                           uint16_t* version_2,
+                                           uint16_t* version_3) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  *version_0 = 0;
+  *version_1 = 0;
+  *version_2 = 0;
+  *version_3 = 0;
+}
+
+ModuleSnapshot::ModuleType ModuleSnapshotMinidump::GetModuleType() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  return kModuleTypeUnknown;
+}
+
+void ModuleSnapshotMinidump::UUID(crashpad::UUID* uuid) const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  NOTREACHED();  // https://code.google.com/p/crashpad/issues/detail?id=10
+  *uuid = crashpad::UUID();
+}
+
+std::vector<std::string> ModuleSnapshotMinidump::AnnotationsVector() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  return annotations_vector_;
+}
+
+std::map<std::string, std::string>
+ModuleSnapshotMinidump::AnnotationsSimpleMap() const {
+  INITIALIZATION_STATE_DCHECK_VALID(initialized_);
+  return annotations_simple_map_;
+}
+
+bool ModuleSnapshotMinidump::InitializeModuleCrashpadInfo(
+    FileReaderInterface* file_reader,
+    const MINIDUMP_LOCATION_DESCRIPTOR*
+        minidump_module_crashpad_info_location) {
+  if (!minidump_module_crashpad_info_location ||
+      minidump_module_crashpad_info_location->Rva == 0) {
+    return true;
+  }
+
+  MinidumpModuleCrashpadInfo minidump_module_crashpad_info;
+  if (minidump_module_crashpad_info_location->DataSize <
+          sizeof(minidump_module_crashpad_info)) {
+    LOG(ERROR) << "minidump_module_crashpad_info size mismatch";
+    return false;
+  }
+
+  if (!file_reader->SeekSet(minidump_module_crashpad_info_location->Rva)) {
+    return false;
+  }
+
+  if (!file_reader->ReadExactly(&minidump_module_crashpad_info,
+                                sizeof(minidump_module_crashpad_info))) {
+    return false;
+  }
+
+  if (minidump_module_crashpad_info.version !=
+          MinidumpModuleCrashpadInfo::kVersion) {
+    LOG(ERROR) << "minidump_module_crashpad_info version mismatch";
+    return false;
+  }
+
+  if (!ReadMinidumpStringList(file_reader,
+                              minidump_module_crashpad_info.list_annotations,
+                              &annotations_vector_)) {
+    return false;
+  }
+
+  return ReadMinidumpSimpleStringDictionary(
+      file_reader,
+      minidump_module_crashpad_info.simple_annotations,
+      &annotations_simple_map_);
+}
+
+}  // namespace internal
+}  // namespace crashpad